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 0x8fc83464d2e6d7f6b4bd45e38b16eff44cbcf1efcdd9737d864b5c21d3be0429. 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/795e3359-bc3d-4716-a784-d9d5158e8a09.json and https://artists.proofprofile.net/proofs/artist/795e3359-bc3d-4716-a784-d9d5158e8a09.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 0xd12e8399a39ae84838b03c30c1ff8f2ea2a88bc3833e0c7a3c028d326c3385f4. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:10:59Z), 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/BGA472015680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c02c554d212fb9170f0a0d20c69aa9352b07479bc4797412f5c819eb91b380. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/BGA472015681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2798ff57887347cf7d408375c58edc8956ecff24570c47ffaf69648181e8302. 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/BGA472015682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b94c863b342c402e81e4cf041137298f40c1075a9ec00ce7983b531e6f13a65. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:44:18Z), 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/BGA472015683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7317c7a1748d86d334e27baee5485deb530c06632087ecff5c82ae75c8c8ee. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/BGA472015684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031835ad51834aa318b6a6baa8fb68c2f7ed98b89e6b9905839d0830465572db. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/BGA472015685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9e5a9044cab5697607ad6a7b34ddfaba1115884a0503c9792c1827b3ee21ba. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BGA472015686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd008ff1c046b8e4f5bcd344e274093e8bfe3294ac743253d2c1b52e2a17a7f23. 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/BGA472015687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1b4ecff98390622f618e98a237648e7eb6a93b02716e5abf4f04664e4a2f33. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BGA472015688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae4f28ee1870a3bcce78a31fc30f7dedd7578796ce31536d97ef1df6db7885f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/BGA472015689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5d850ef2060f1368726086fa370877a90bcffe9a75e73212f7d5c22754a62c. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:42:57Z), 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/BGA472015690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08895be4cbb311de7a695d46777730f0986bbabc8d2f5f9f9758ff7208c912c2. 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/BGA472015691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc079a0879a6ff01c25ab557509e05a693691300a1a9106144233ac5db1d1ef6b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BGA472015692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24661400c7e286ffd12e7121bcd3ce80b97c80be611d08cfb1241d34f53a821a. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/BGA472015693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17aed60f185d2ec811338db2acb77dcc14452fcb421d298a3ac99a798efe3e8. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/BGA472015694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2a613c17eaf18bf2826ce6970105e9a44055b983aec0291f20dc8a4bfed964. 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/BGA472102840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc6e74e66dc9a93df7ce9c0742615d2d61717e186769600dbaac94265469cde. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:21:58Z), 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/BGA472119870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5275369a4ff1cb6026541c5a7f4c43b276bb74b8548dad569c379b8bee1c5fe8. 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/BGA472119871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980016e788e34c65981c98e22329e2ef3f2520b1df0997be6ebd64b6856a1e31. 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/BGA472119872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c16cdd589cfb097fd7e0dcf8f2daa3b6c676f5b9aa00546c73455048bb9a562. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/BGA472119873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73778c69d1d6a536800953f03d70ae105395f363bd8b788fc51ae16821490c5a. 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/BGA472119874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d78c063a655c16e34ce4dbc84d56049faed3fdc404376b3b4210650d6283df. 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/BGA472119875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b2b169be8e0075432baf7dc3add2bcd2f3463df1ce982af30befcc945c4776. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:45:33Z), 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/BGA472119876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2041971b160d9ccc569eb7d47fad192ef8869dd89570c46706d999ad277d78. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/BGA472119877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a59261ded690e556ae25fcb85f2d2271d73028a2b30717f07fe76947e9ea11. Chain 2 (Bitcoin): anchored in block 958676 (2026-07-19T05:43:13Z), 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/BGA472319552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820e62505bf3d22859b32a070b233990a5eac66742773dea7629dd176a49ead9. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:33:27Z), 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/BGA472319553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873d734875fd18c5b2f21309f54d883670cd7895b7690a5bd22c02fabb351d91. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BGA472319554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d06d851c3ea0edc8db28823556b777cab15e5684b947e04a52233cb640c7694. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/BGA472319555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0c7f9dd836a7d6fc502a55f35ab2eefc572c296b69933bf081cdb2f1bff0fc. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/BGA472319556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b98bc941037ffe8e394657f43730f4c44b144d0acc0d32f1ee46680baec58c. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/BGA472319557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad185d74e626ba5fed5ada9d93cc6223fdf9f4e4357ff52d6f59beb445810b4. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:36:54Z), 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/BGA472319558.