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 0xfb8a4ab5f3b95e8efe3545af0f239feaa21839682ffc27ab459c70a4cee8799d. 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/7021499e-329f-4c8c-952e-cdf4c6dd877f.json and https://artists.proofprofile.net/proofs/artist/7021499e-329f-4c8c-952e-cdf4c6dd877f.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 0xa9b391518385212ac2a1f59d95c36b034e683020a0ee9d2c4d91f414159ab77c. 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/CNZ632400220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31bf638ef989a78cf9bce47cd5ee94869f05da697770bea5a045ebc0b6c07334. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CNZ632400396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21720143153de11ccb81b6c3d44682844d0f0452f1596e8c9a43b66c5f02bb51. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CNZ632400325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698427dc5c68a4b1946b99a8d7d91064b334fe0261819617f6a8c9959350901a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR10S2480573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a67c0baea3a48236e82e6b989b7a0c36a39272f3d0ba2c9747adcc90bf6d20. 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/CNZ632301350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96523c1da06261baf363256ca2f993d41ecc864e62610215db0b331cdb299993. 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/CNZ632301359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840bf5f69fb8e8438e7818675d10e9f7efc4aa76ec4e06b17ed76b2195d3e5d1. 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/HKG732387959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e522b329fc8f9666c82ffdf78fd84f63e26bf9e0c4d445f14c0492f82c09025. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRX282383595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf41abba10cda5f39928a2259ee50065e4c32bc0afc9c402c30973a3d2c9a69a. 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/NL8RL2421841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0243fc92119634e82de62603c587f7619ea9f7a435bef561647d1c0d0204fe5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR2X42379050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ee003787274223f3d4e2df35dc7f96ffe68703b445ebb7f4d3b53b6607d4e3. 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/FRX762291559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0daaca9a6453ed0237e616ffda9e280b58f85d34906e3ec714def3a80b5fd467. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QNSM12400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049e7998c38d9e8c5cc7ad1fce3efc3599cf647f156f35202018f9d823447dda. 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/QNSM12400179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47d1ffd679459db88e2c5c7da00fef1a5737a041e242d35cf23d19c926b9c03. 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/FR2X42540382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e0a1e8672a1f3c82e76823425e80c5f3a49e73e65474acaf046674b1d8e716. 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/CN7632401360.