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 0x22ff8b7ad82d0d8cf693800346afb5706a18379ae912a52f04053264abdecbd4. 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/cc5e08da-c1ae-4e33-a231-4a224afaf080.json and https://artists.proofprofile.net/proofs/artist/cc5e08da-c1ae-4e33-a231-4a224afaf080.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 0x03046fedd8219f8c350e2f0c0779ce0f2433c52bdd8f533bea2d14f54010b32c. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FRX452110047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa8d958a410d8d7226d4d6aa609a1f0ab1d216cf23614a17b88b8c5439efd41. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRX452110050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9a407a565e12d2898cdd24f6fb0a3f85e3e4465da2b22643d74263a94128a2. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/FRX452110051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a285a4e0a67ae7de4355c34c5dca830baaf4c22132e410263c43b4c474a0d8a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX872188468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265e1d4637cd97c1d6233e008ab55b357bbbc65a511c658060ffabc92d092ebb. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T22:48:02Z), 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/FR2X42230881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8081443ec4abc21918de0402a2edd23db47dc5c5866d41356b415ea44658b72f. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:06:15Z), 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/FR96X2246569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cd05d665187d4e3ffc4f5f8221a28d44779d1a21424ff3ca2489c9bfbd979d. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FRX872206417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c2926629230359ae2787d8224f1ebbd0464c1c1f1eef7052ea39bb2b2446bc. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:38:25Z), 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/FR10S2379486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf70cc533d5271963d4aebecd14d3bfe1c41696963ef99a6e9f0c40b8a0e14ca. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/DGA092318948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a1eb5946e8a8ae7b9ab2ebd26dd354ad6116bf0dc674f56f576583613ae543. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/INS182402245.