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 0x34a2eeea41625a0df54de3344abcf5858df65c740f654c96bf6878d9be1882cd. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c902a4cd-a1e8-44b7-93a9-12817e90701f.json and https://artists.proofprofile.net/proofs/artist/c902a4cd-a1e8-44b7-93a9-12817e90701f.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 0xe6bb2078e2721a84979c81cb71087b8c99e94acc803133193676f61d03948f8e. 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/VNA0F2105503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db2e2d66c39889e7baad87bb5f95b70a17159f6a7a06de701354108c76ca5cc. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:43:00Z), 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/VNA0F2107600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48b07bd4c19ca3cf072ad69de3417e4b06a5beee64e2bce1d21cd484ef27ce4. 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/FR96X2266265.
Đời Trai Lênh Đênh (Đời Thân Trai Bao Nhiêu Gánh Vác)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19be6007787daff7d42b99031cf96b8dfb3b61841eeb8880b65025a1b8d185e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/HKK972204987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab1baedaf358d0ff8b9e93053f0457c98ebcf0d621c2f922eaf0376a34883c4. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/VNA0F2110264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409b138cb2b0e7204a53f6a69ae3de76c21e721bea7fdbb66d254e74a7085859. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:02:26Z), 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/QZWBE2243930.
Con Thuyền Tha Hương Remix (Dezin Remix)
Con Thuyền Tha Hương Remix - Dezin Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d8505ac81c5c7ba6c6a0235639294bcba2293af862fc2cc948262a01d96690. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZWBE2245710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8803f075dcb5b01966be679ca4e83119b418e7550f6b85b782aa82a0de888a6c. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:33:11Z), 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/QZWBE2262316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983d52f70d781b8cd73e98712aa6df8bba7b0c6fb14fc063d384303ade5bcc55. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWBE2283704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9a89f86bbc944b80a8c8c5f1f5b4fc05f2914f7c398d9063ec0e7b4282a992. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZWBE2283741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d35f6b0eec283c2e736e30bff060cb60c2bfc0ec6452bea6e336c95abeda61. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZWBE2336399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda04fa121f77c77b4ec070c1c36a112338cd9c1624f7b4ead085bb6200336b40. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QM6P42368309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c05f1cda437c6ab3b03b7a9e7dac1c1aeddafffb2e6f7e587a032aec27123b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:31:28Z), 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/QM7282375240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f461e62bed456827c1201798b5096c00b01fcee3d7b6edddad6a5aceb3178bc. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZYHM2302605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c05c0c30a6ebc56f78938ce132d1e78ea271478039d53978dd89fba33f2df8. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:08:01Z), 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/QZYHM2370297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471a5cbd7e2a5d0a6bc71bbed03c328b9675a5f10f76dabb9c0557ad4db8edea. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/VNA1M2281356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3830d9f26fb8130e1ae7b481f51092fedb718cac0a5b377e81163a61f5eb6e1. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:26:34Z), 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/VNA1M2285193.
Giữ Một Người Chẳng Còn Yêu (Lofi Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc803b72ce5a4ab30afc931f3d82433f40cd38277ccfec3cf238dc5b469585c3. 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/QMFME2455070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc803b72ce5a4ab30afc931f3d82433f40cd38277ccfec3cf238dc5b469585c3. 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/QMFME2455070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9ecddfd3380ccea7140c0f2fbb6876221f48d930a26aad503b99fab5d3e022. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:37:26Z), 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/QMFMF2430684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af4145015fabce2b7e7ea6a5bd6f90ab9cceaf87d1f58fd9b959fde72d2abdc. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/QMFMF2430626.
Tự Hào Màu Áo Lính (Lộc Tễu x LAM Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59079fe7199947c80296f36ec374b49266a6b254758837f8851e4a6d1c1dbe4. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/VNA1M2402044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f908c12145c78fc719ce7768e64cb5bf4e81598d93770b2c5c7685fdb0e717. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:20:54Z), 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/QM4TX2522790.
Mở Lối Cho Em (Huy PT Remix Version Thái Học)
Mở Lối Cho Em - Huy PT Remix Version Thái Học
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef6d7377a44a6315c81e88ee133e5506df1b9b9c132402af5dcdd09c485461a. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:48:00Z), 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/QM4TX2522793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe359212be1fd4e7ffd1033a1e067e99650feaffd0fe7c04f29f38e26ecffe5e2. 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/QM6MZ2539242.
Mở Lối Cho Em 2 (Huy PT Remix Version Thái Học)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41453af44c65b46a03d5918db42a831bee4ca051e72ecb8f52a2576e1ee13288. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:19:13Z), 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/QM6N22513740.
Mở Lối Cho Em 2 (LQT Remix Version Thái Học)
Mở Lối Cho Em 2 (Đại Mèo Remix Version Thái Học)
Mở Lối Cho Em 2 - Đại Mèo Remix Version Thái Học
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c537dc38c8ac78392ecc7034e11454fd26b3e4bbe616cf9098b72ca88abae86. 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/QM6P42507359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1416b158ebb0982b58ac06697634700c95e9191df8547e23c85e4f3bd442936. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZYHM2506874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d0e30a86b0f5a84871466d05c29dfb7274c00a4b9ea9e7b57b33516c788884. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZYHM2506968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4da5147d4606bfe56461e12598cfe5e5745494ca7f25c8763a23c69aa1377a. 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/QZYHM2507460.
Say Như Một Thói Quen - Thành Đạt Cover (Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476a6e89c115fdffa467fec316dc5f18ad7a015d687a2221f8f38833ab855a54. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZYHM2508532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d26e28f3b1994ece1c626dbcc73d88137dc440ee3c74028e9bacf179edf2ce. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZYHM2508946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1270750663ea0735aa095f613e16aadb6b7acd980aca2fa18fe39286b1aa04c8. 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/QZYHM2508947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802e5caf0141153e7efcb52343482f45193b0a8699fc007c145bcf35ec990f19. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:59:46Z), 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/QZYHM2508948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xface40efa7260723e6a645f0450c1bffbec7471345e7e52b2d0e4cf3a619140d. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZYHM2509107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd509be381abddd6e91e06acae9b4628a0af306690d030bd7c22ffb6d6110bb6f. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:28:47Z), 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/QZYHM2509437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451ba44d054ce60ab720dc9cd2bbd0bd3307f5223f4baf598946d067baf918e5. 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/QZYHM2509438.