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 0xc979e4ac7aff938637a630a8fef8899881e97eb3e3c99c7febbbc472b9de8fa4. 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/ce674760-bea9-453a-b341-55b11afb6427.json and https://artists.proofprofile.net/proofs/artist/ce674760-bea9-453a-b341-55b11afb6427.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 0xac010408e1ae6d3367150e90f24ef38df27ffd5a0d8dfeedd9591bbbe61b7841. 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/FRX202364059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38968fc700ca33c292cf45d544aebd50f58215573ed546e83ece328306fe47a5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR59R2358636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfc39c54423a8db189ff45806d536e87610159976092f108d56b7bf6fc2be25. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX202364061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf20976e1529d8e4accb48a0610f10db7eba99962fda370419b29367f92e99e8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX202364063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f276c470d72d9f706bb922174c01e42763ccfcc42bc3ccf4432ddac4c851748. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRS182065794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e406c25cc0694d40084dd74e76a399740ea44571b3d3044d4fad66e6b2d7d0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DGA062047605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee4e13d92ff51235ce014d20026847ffab1a2d07b162d001806f3ea1babc9ec. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR2X42148030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36e800ead5f00bd2b487e67e5f7c647bad828e33cf3bdf10323ec1f5687816a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES5062409901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b116faaab37965919caa38a43fb2e4cf953f22e702bb26173cf0b5f0607a2a8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES5062406701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1417b89bb299827689319bcd6c6fcd45faa7d628060e91fed733a153bd6266. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES5062400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38968fc700ca33c292cf45d544aebd50f58215573ed546e83ece328306fe47a5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR59R2358636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4e9f843a35fc8cf0490fffd5ee3adbf9e9d6e8758616467c42b77a1f000103. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DGA082298608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da5ae9006b6b2be7486170386ff7608537df8c95ba0d3b4fb03c6468cb305ba. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5062203301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfeb57b876f15573d5e3c27a5630efb03329876208c1e2cc426894b8a0a9d3f0. 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/FR2X42226358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad6bb3c9cf871d8ac0b55c846a32b4e1efa2c9aa222cb142fefc545e3d6456c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX872131431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbcaed7f87ca0fc4c1cc6b77c317591e526eaf6b19095fc215bbd783762c523. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES71G2140966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3b76fe082d4ee4610a04e2e89320c5e008282114029c1df1851f4473530627. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRX202107563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee4e13d92ff51235ce014d20026847ffab1a2d07b162d001806f3ea1babc9ec. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR2X42148030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3f46ef599c5291ea42ce4cbdb4e59bec8053c9d59687e4680d8258330e722b. 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/ES71G2019024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5967da9bf91bc92a9146d7aa5788daa4e973eb5721c2cc34f4c9d1d2d33695ec. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES71G2016608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0d91956a04f60c99846d09a186785851ca6df709da698e0ede309d2aa3c71a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES71G1910765.