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 0x13a9d2c3073987bcf93792ff1cf6c83ea7d028766df90c3836414a1e7abf0fe8. 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/d179184f-6d23-4b86-bd85-fc46b054b54c.json and https://artists.proofprofile.net/proofs/artist/d179184f-6d23-4b86-bd85-fc46b054b54c.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 0xa1f984fce0a19f999f30069bacfe97aa71e278a57c5c16a8a78f1d17704b73dd. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:10:28Z), 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/ESA011510858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe214fb63cb914da57fff2a4919dd32bff026f555125248c3bfb982f39b6622c7. 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/ESA011510859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3666acb963208a9600ba6665d96e15839e7e61ab16048d25cd7cd63887e7e05c. 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/ESA011510865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4de3a7d2ca702c3d02e01cb07ad5c2f151cfb0a1e5c027181e346658e4132c5. 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/ESA011638482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95dc0479d191d948c184c7bdbb1502fe4b3cfc03ff1d36a0752992447fe3a5bf. 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/ESA011638488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833c955f5a5e987f041c438b8818bf74ba5e5f0cc6953868a76bc323e7dc2f2f. 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/ESA011638491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4469333e825809f5360b3bb4482f47d8b3ad56fb57fda3973b4bc3c3b759bac8. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:00:55Z), 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/ESA011638492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0fd1eba5a5086abd30309512d1eb17afb0821cf83d6faf4ebbff0f443635aa. 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/ESA011717034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbae99cb38d155a55ccd489d03a11f768b9386cc9cfa23a0c82289b6224e01a2. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:26:39Z), 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/ESA011717036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615199bdaaa2be336975183556c0b51b0a283b437feeb36501d43bafda304e5e. 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/ESA011717037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82dda1b3c6290f0e5b8fb57041662e6406db1f5ac335bf460d63cc35e222928. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/ESA011717038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246e6a54e13ab72940b754f09f3c0cb164e41ec10e6aef7c9c8784a149a513f0. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ESA011717039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7d80153b59c2b515b1bacbf929ca160a5ac325a0fdff20fe6990041678bf6f. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/ESA011717041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3347cb6e1d03533d5d9be333db27cd5d1935f6ce5ee463c6d449fa0fccf8cc7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR10S1898188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47759b541d617b43fb40096bbed641c12e953284382ed76b4fe49d9c335af5af. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:19:51Z), 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/FR2X41818535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6161fa33deb78a217a8e11e1f52546cda9b5dd122e78b4b074e8563c3cd033. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR2X41818536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe2eedfb31c8cf3ef8e171ac79aec8cc07189a0ae2189fa2e92745aa30685bd. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:24:04Z), 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/FR2X41815821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08cfabcc9a2c11304c0dd87765cb035e309c822d6471d39a16291a66937e416. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR2X41818537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc8025e2b21b30df13a473378d44bc34f942982351640a246dd7422dcf415ea. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:53:29Z), 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/FR2X41818539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1192de0d86e9d6b0e5b6d0f152157544afc3a1fdb39845a227f91f7ef1edd7. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:52:21Z), 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/FR2X41818541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a271e1c65224849bc78f4ccd6c985dc82a3257b6f68a43140adfbd47394b23. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T16:53:10Z), 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/FR2X41818542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9414874d21e3c769204463cc999a6ebc0039ef03d3f49dd42b43811387b46c14. 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/FR96X2051618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58df72bb5a4f5b82694f5e69188d922ffd9fff45f61dc27bd5195c71c33f7204. 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/FR96X2051619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435efde4dc6491d520fc07dfacb02a52e1fb835dac7e3d1106554787886764d4. 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/FR96X2051620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44075a71fb1e9106a0955fb74df07352a060b0295a9e43325d1b79eb1d2c4307. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/FR96X2046341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d91e5ba50683dbca130617c3c09354fe20f8255944d4714f2a49020f6c2cf6. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/DGA052061433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52412a1395d1cb6acb3b486e61093d2bcc2ca10487d2abd96ec1c2ba486dc2e3. 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/FR96X2158281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f53441cec833da387dbc39273443212c9d44295af78884bf6e32a26d23a920. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FRX762177072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30d1fd9353c27bd030b2b7a9ddcc535ee1d2bfe59b4b02368e070e5ab7dacbf. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:10:19Z), 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/QZMZ92201453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34bad6d7b3463c4ad7548e6930ef538dcd661c0b41d35becd08472f7ae5198a. 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/QZNJZ2242958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf59ed4b01f6996ccb0999ece27efeabe60ed635ab19d8ebe9ba82a89ab09cef. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZW9M2290520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff229c95f9c1554130933a3a928ed8ce1788362d66f91a64494a50380359b5d9. 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/QZGLS2319473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c295959cd1d6f2d087fe7a80ed38aa1e879045a47c086ddd1eca1703952191. 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/QZGLS2319475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a29af3663c597bbeb6518b59a77f055f0a6e9164b7d6c9b449fb923c50ac09. 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/QZNJV2488358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfc997fbfb92eba7112ae0e7441bd1303306e8d1bbf029f94285571780acd1a. 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/QZNJX2430496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77628d2ca00cfed19724ac280d671562edf3bf688ae6303fd22d56e1fd5a7095. 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/QZGLS2518289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842e44fe7d7f275dbd4b948373d2bc2b37950a9fb39fe89971a312c3e21b52f7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES6081441125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef198721e7b3076f827b7d56a321acdee557252cc3c06ed3681068895ab278d3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAFU2168464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f9bc5e3fa489c600ee0384b115c3cdea2f0f6a27e592efdc24608f1e6cae48. 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/ES71G2050654.