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 0xa89238233c81a9e008c89c12e8327a52ed98fd372e551142e8609fd85b7cc35e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/730b1ff1-be80-4ec6-bbf4-86e20fc7b138.json and https://artists.proofprofile.net/proofs/artist/730b1ff1-be80-4ec6-bbf4-86e20fc7b138.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x4fc024100e5fa34b36ab8b11a0640ac0ace56131067f41e299fb85718003129b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM4TX1986276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccd9ec4d0e416dfb5ffeefd524548a6d86a82181ae2885912545ab774f4e0ae. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T08:31:08Z), 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/QM4TX1986277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089dbd286c08e823c125adb4af122d0782e04dedd62c90b5a1e406d1d2954312. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM4TX1986280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae20089b1de571fb370d79b9f85bc10bae405804feafe06533e5e949b2114ce4. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QM4TX1986282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072e5b5101efe6299d65f0d9098ddedbbc6c74e3a4e8274c9ed8f55656c1c680. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM4TX1986312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39109a14b257f85a24abbf3f56be3aade3aa2dd18302b05b4cf6865d81374d1e. 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/QM4TX1986316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9a818603aaa099eebe921415aa656bb2c17f27888f2790e5251806d3543c21. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QM4TX1986317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184c81dbb1d27fad73f7bc8a23e3abb7f623d8fe70f3caaf4a988cfa532ad767. 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/QM4TX1986318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ba15a94ecb1d8a0bab357b385f52b2f1c43dc9ebf85418b112e0611d4bbadc. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:09:46Z), 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/QM4TX1986319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51abb0ae42b3ab445e76930572e8cd2636b58b0c0bcad5d86a12d2884ea3d520. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USANG1917458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706dcde304f9fdd206ca3baf7fd5932750de1250e73c118b6865aea97d4c88a6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USANG1917459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df8b6d00b20399f9617289b86362669af7d86828ef31429b0439608c9640da1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USANG1917462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe486ffcb3dd6a6e4aee8ae33cb90525ca371a78e63deefa0f47d60f862356a57. 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/USANG1919527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b591e26499e0b182e722556ecd7ee121bd56f2cc3d46085fa529c0bbc84342. 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/USANG1919530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dadeeaa24ed6286cff70514a24c925f19e6e78f82301b7b56b0f215ea6c48f1. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USANG1919563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c14a18916acc0971149f87ec716fbb1df32b42957cc54f68c60fc904cff17c. 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/USANG1919575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f03fd539dac1a9afb88d2ecee7d7867b3ff53d082ac398ccd695b7ada9a82d. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USANG1922717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecd6894f599dea5b7b330446dc06b55becdf1dfb7f350dd24cb7eeeb387de9a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USANG1922725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874afcf6f576c5f3d078998fcafab2884583dbd38894a7ada060f3e88bfa3be5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USANG1922728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7fcd2630040557f23eea3c772983206696f3f28e5459848e07402dd04656f6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USANG1922729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d1ccab78f027104470bbe2a65e25304dae297dcadc370cbb68c4fefd0ecf00. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/USANG1922741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161c45e0c53947c144ca77e104947bc11f3fbf914fa989a018476945f3609192. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:59:55Z), 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/USANG1922704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bbca41a2462242f00a4d3dd74c1a431570753240010645b025f060786da18d. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/USANG1922709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec6d142751d5bbd364d256d90c851eb1a81dc53e31edb402acf35c0ac152be5. 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/USANG1922715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc9b20e1d394c60b25c4b1b9cb1ccd293a32b174d79774231905d6a76b66c7c. 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/USANG1922783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c7323a570d1bcf4eedae943d4be93d20b170a1330f8bad712c0d8f31e937fa. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USANG1922787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86db9b7db9247b8a170ac6cfd03e2c2821d7765fc6bf9a1ffa1f9aada582b85b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USANG1922794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161935e243eadbdd72ee7b09e7f44e5b2d94b3f256bcad996c028302b019a181. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USANG1922795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4436cb55160e3c68f4f34c814484cdcf702f48136c68d4470728e48b0a0d9f. 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/USANG1922797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089a81fa4d9a85fbd433437cff512e61758134c31dfb914dafdfaa9c60aad39b. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/CA5KR2058200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdb2c9e0a48d0887b310a1a9954526ff98cfb7556249a75210a1439ad8326b1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CA5KR2058201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf71ccf30ccda80a3e9575a47d4bcdef38472222bb8cc2a435cb5c9a29e00a41. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:58:00Z), 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/CA5KR2058204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87d93b52792457c221f3b3138ad286d1852bfe61dada7beac49282eb66376b2. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/CA5KR2058205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7143fd88e2badf3e42f93554c7f335697b15683c4989e711db87d24ea2398d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:52:43Z), 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/CA5KR2058208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5e53c45ca9807250b1356bbdab3b389801a6507ff9a38f11bc0565812431a8. 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/CA5KR2058210.
El Regreso De Rosario,,, En Vivo, Vol. 19
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb67eeed9ba16f5a1f7f914493dfe2b70d71e3f7d1358fa5d0ecb81c6709412. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QM3DF2408499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81c47cac870975ca9de06a1bc79b31a090d200ec449046f1744e7872e0fad67. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM3DF2408500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a2b2fad8faadf99778c7ba40893a4a0e724198b727915f824a31c03cfba146. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QM3DF2408506.