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 0x5a2c2ded1a25273d82af2c13eb4002ca9d255c33fb00599b79691a858b4daa6c. 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/d8ffc22b-ccb3-4cc0-8591-77564183636c.json and https://artists.proofprofile.net/proofs/artist/d8ffc22b-ccb3-4cc0-8591-77564183636c.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 0x0a844e09a3b109da0f2feb6ae26ce2053d15c6a040c654ec1e3701bda5a7d2bb. 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/QMBZ91575747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7b175336fb45e68fe988290a8725307ed980a577ca6fb1ba4b2e1a7c868582. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QMBZ91575748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03974a63df6dfff206c6b992f2e820a1950f1b4b43a4b36d8d654d963193322. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QMBZ91575749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6de65711470f36b7296e2c3c404d5eafc9bc78d1a589526b8ab6752475e6d8f. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/QMBZ91575752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c09d837cf0ab399b362f3753e3ee154559eaf6007c6562a85b9de8e4bb6972c. 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/QMBZ91575753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71906cd920b1b6114c04166656c622e26532639a167cb5e5683996c1e8aefad5. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QMBZ91575754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5149b59337fb31f1c09797947ff7f2db02f45ee235b833106b6eae968678900. 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/QMBZ91575755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c14233b1ca52a38b0baa6b1c0024ef130a227f5254cb298c8aca18ec3dd943. 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/QM4TX1706744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b47ad0a6cb3d59c51afaae54e3975659613c0946a480f115864e0303534323e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM4TX1706745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e73ee86c9695f07b8bcbca7cd50a69286e689d60ac32654e11d40902debcffb. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:45:25Z), 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/QM4TX1706746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e06c3c1cc87d66136e8e6127fab6dfdcea0aa97c19137183cb7fffeea11f4c. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:46:46Z), 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/QM4TX1706750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004b424005582fe1abeebb62d7662e94d4c8f7e067d3e264037216898f82a8db. 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/QM4TX1706752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf40211c7afbe69f829e589e72269be80895ed86ea351a2d0075fb1755b9eb6. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:42:55Z), 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/QM7281952775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7e9262623fc3a53e749640e356340cd48034d07d32d9d880338ea146ee1c92. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QM7281952771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3bdf4eee51c1bb2a1488fdbed8d6ded9a5bebcbd4a222cea637287cf599b7d. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:24:48Z), 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/QM7281952768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435dc358b1f4441ebb5d88670e23ce4db7091f5b589cc8282217047e1da34ccb. 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/QM7281952773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aefe7659ea7e9a020bb61aaa0f76a1012a2b6330c5f637d76bfe8817b7afc4e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:35:59Z), 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/QMAAK2066767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb913e96b6d7e3b2f9a3370bf9a409532ca78a79cbdf34686dd175d803d21385a. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/QMAAK2066763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e98535877781c4097a5c2b91388304da9fcd4c1b356e81728f2c28ce3fe95c. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T03:58:14Z), 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/QMAAK2066765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a281fc2f6dbd110260e325cbb5698f355e5c27a0fd179259154f44a31d547e. 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/QMAAK2066764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd345517807c178f6595dd3da8ec57c24261ed98dad5a4db06c90d0a17c650a5b. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QMAAK2066766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a9a563e198b7ed76722448d732b348f8d718779582d4acd549bcea44515fee. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:52:48Z), 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/QMAAK2066770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2718c0c4d08cff886760ff6b153957cec95fca79c3de69397f2d616f49386d6a. 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/QMFME2211611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66945855ef3d155870ebc4c8c096e94fed2e3bd7d9fa455db62740d96128b19d. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:03:28Z), 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/US23A1569571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d685e59198c0426b07b3d1e2ec96e44496ec2dd3d893df51e44089b8cf0cad. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:08:20Z), 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/US23A1569575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb9b88f890bb78abbd8de013ae379695948d9adfcca56188d41bc13fbc5e408. 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/US23A1579318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69df52f652db6569b3c4f9e15481d5687f5fb55d18a54f49400a2244095cc66f. 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/US23A1579832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7280f1089d82cb3ead11467be4af5bfa0c8a88100c86349194d5f1857580cf1c. 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/US23A1579833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b694f06e2fc690fe3dcdd96ea4c6fcad6812d2b688e209bf91dcb760e796060. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:26:19Z), 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/US23A1579834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8356c3877f1395339a1ad0b2eac8a1a2a1041ae822f597e1d319eabe34a087b7. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:42:31Z), 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/US23A1579835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62aefaeb4e20c185ff287200016c107a302d54dbc4ba3c6efd4df74d39fc1ac0. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/US23A1579836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e4b215163d847ae704a17f752f82e508701c7b77680e6e6ee5131db7a87fe2. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:39:19Z), 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/US23A1579837.