1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44395a08b202fb161ac07ddd7c6587f4c47ed0e0e319bdbf877c0e9a4e058a12. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/86acffa1-0552-4a19-89ad-d66471ab3361.json and https://artists.proofprofile.net/proofs/artist/86acffa1-0552-4a19-89ad-d66471ab3361.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Thanh Hà - Tình đẹp như mơ (Tình ca Lam Phương)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72baa3356b14c1bcdf89a8cc983020b4347cc467823b2b4f5a3b9d0666f561fb. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:09:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F1735246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78481ff87bfa58ee1547f3f5b44085e8578e119228291db3f5fd410745543e7. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:59:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM9SX1502538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8cb57724b37e4ec13f9fa85c870d26b968590a73220d05cc7d90b93d58b2c7. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:28:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJ3V1106912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebe76ba74e02d7613dd1dc3230f867e7f977b4639ef46a20a804eec17d9045f. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJ3V1198745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee084b9e83ce31d3f4735612aa48c31b768089b2d81fd8476ba81c24a8a5e55. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:56:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F1736721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad3bda27632d9a5e541fb76c758e4db18fe08cf7fb0ae5732ea8e7e50eb13b6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ91913850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f6669ef4a7c4cbaec7420add56d13fb8c4286f7be6d6088b4cf71fddb66414. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:58:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ91913851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1543f368992fc98e86d159ad2fe22438fc5dcd751b40ea7dbbfbc65528b84d7c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0M1838000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa10a022da29ad2fc05418e91bbdd123ebb9d32bfee78796d82469c9d7efd3e5. Chain 2 (Bitcoin): anchored in block 958863 (2026-07-20T10:27:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH1931324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1067347efaa382bc38dd2e1bd6329ee7bde01942dd84dd0bab42665de043cc17. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH1931327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a6b58ac2b3496dc298c38acc92de0e556015fff09c982c75a15d25318c6bf5. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X1969944.
Còn Sống Còn Yêu (feat. Orange, Tuimi & Châu Nhi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41abe69e3fe35d4440d96d7791ff8ab83517adc7bb1223ece4e088ae6e4bcfce. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM48F2002102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88c8dd838638b8338330a4a9dd15a33da15908f60654c4f2310fded825ae810. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM48F2002108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67401a7a5ce4b50ad93b632dbb9af6f14700d669e4c5d6d3e2a0d7b93bea29b0. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM48F2000701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc945ba4557412716eadd72223f50514989a958e7b3d5f9ebe063d288479286ba. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM48F2000703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28552b5b2aa369c57ed5a42d77cb58f982656dbeb7f385bc3336fd543971dbc5. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM48F2000706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7551486961efca52535890654324d59b2ce6ae81f346df56a417aefa164570ea. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:42:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM48F2000707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73826c85e695712a2c6e5b2326778b0f28d12d1c3dbf831321320ac08e0df00. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM48F2000708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89faa92ce48d99ac5203c6ecfec6d2b5c7e7d90617bb443a3e294109bedc8621. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM48F2000709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7fbabb50f9279e387680b78f192a0e8b88c8b56c607a7e07542a47d1d1f1f1. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2024640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbadd5ddc5e346fabb211c35413d979666498adde985e69d3838b52ff5cddd4. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T16:00:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM48F2105104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3548ecdc983ea8c8da685ae3c64a9f0d2a2916bc17095f28896343262023c4b. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:02:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM48F2105108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9a72220599a3c0e7cb0aa539edb905c5b5b134d77b70b813a7631938d027d1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0M1928856.
Liên Khúc Không 1 & 2 (Xuân Phát Tài 8 - Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7680f48f26cd2e296870d9761fde87d141efffb3e507eb00c05173c2d87703. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F2306343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540b6463e75f0d5eca6f8f03dce8586089f822c9e3788e65ced4c0c0dd8c7d85. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F2306345.
Năm Tình Khúc Bất Hủ | Thanh Hà Hòa Giọng Cùng 5 Nhạc Sĩ Gạo Cội Làng Nhạc Việt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffce2a3cd8f66f88db342b47e3dae85f2b6fea7bebc8e5938c96f01aebe6f17b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2576955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ad0f1bcc88f7a2ff1008eba3c1b57398afc2d027c8001438186e39dc750a97. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:00:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2576945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaca06a2f3129c1fb0d6200f93395f959e5e65c983089913a8ab97c72d959e4f. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2576956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf26f9630c413320169601134b686df67ea22012083625756cd38bae140d405. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2576947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1143b68d6fbf1dd142da9c14363b4cfedf2aabbb40ae3f883c2b08af31eb319. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2576948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3e6b3adced7e01a0fd780e790826637e1eea2a638978609c3f15a0b35fa675. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2576949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5faf545bd4b63cf4f13c10d977b5d7bb491ab5e66cf275528d3a06fe8653a3d9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2576960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f6e71719b63956c73a20bb3fdab86c1ebf00383fe80e6718eb0681ec9b0765. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2576951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76d0b075fcd2f83ea5632e52adc6511f5a7136038910eff91334aacd52a34f5. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2533405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab9e7b832975c8d4539a4dc430e9073d526e6478f4f2e3bb94f504a530a96d2. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2576952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7394ae88144d6e0e42fe8127d5276ccbc0f6f46d2fb54227ef8e1ad4476d6451. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2576953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e96c43986f14f549f36fe02a56fba6da6d822fe76279849fc3f2b62e188077. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA2B2500891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d6ed9f83bce3f35c96102751d03d7bfa547adcf6290dc5d82cc1381707e8e9. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA2B2500892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1046cf9f0f11f019dffc67381a0530300715893f2fca0dec96fd1229146c95. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA2B2500895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176022804bbabc43da65192703b65fca57fd9dd7cf55b870ef4e8fa726ba226d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:56:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA2B2500896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0227a1c31f24f989469bfd904c5ed1f25cef03b48983de4da9eb073d6495b055. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ91911701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e79face14269088e7d1516b94ec2d5d0ed3a7f6390133652d640409b81e346. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ91913688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b34978784d552e7d32addbce1bda5910e2e0f3e202b3f6b00632b988c9e6e6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM48F1556107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2f7ceaffcd5fc89bc65735f9e6553b79c155982bbfa20bf0d4858c2a2df4c0. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM48F1860305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d4677091014257816f0667bc6f6b1f96d139affe83aaef12308eb7450148d5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM48F1860309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5370af61f97c5ce4fb4586f52a0a2075d9d4844662d75c8a24fd8d4b287f33. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW2085885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44bc94029d58ed5cb912b6708590c928aa9e4fd845f6b49a7a81ab21d59e7deb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ91913801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409f1b0cfa2cc74fa0a7e6b288a6ba670b806146cb3bb0bd26b05956e6ec4ae1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ91913804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c4573bd01311c831e51a51901c05ad69551ae0df6f5dad5387e61f10ce7f6f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM48F1555008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213133183979dbc9b562df6e722fe866d76bfd7bc1921b15d051160dcaa7a699. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ91916419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e68ac497d201c339ec9f2e34f0f5d43e26163d4c77e24b3ccc6e905b40b62c1. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:57:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F1777266.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d287ee801dfb7439d6346dd717c3ab6fcb4b3862777694ccc51bd69e2a3706. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ91913684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226dc2b567f623a6f2a6523c6239aaa90d79364e08cb1d659000824f88ddf17e. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGCD1806754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0bf5ea8800942f0c73923475dc0931777581be001cbefc5d31ac8e674187a7c. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM48F1962103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66163a19cef4f08ff6ecbc62bc36d33311bf6a6f25a20d45d3cf95d414480e1a. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ91913745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94241c953cbbe7e285e907f61ae875ccbc58db5004852e2fe3b1f27e7b499986. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ91911736.