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 0x4a30b072f04791214b8fcd95fe9352f048018f5db500e8c0efa4c147ba030931. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/51439222-9956-4e9a-8b5c-35b504e319b7.json and https://artists.proofprofile.net/proofs/artist/51439222-9956-4e9a-8b5c-35b504e319b7.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 0x5aa0cc9eec903b1bd568cb91013b4bdd46f20fcd0c2be98da4d4e7a2daa9857f. 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/GBSMU4959669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bae8d9220c61fcadee956c808f8775637ce0e5d5078bb5b4888d44eec32aee. 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/GBSMU5206643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d4f216d5fb9769d8469ea7bfe2910ef5c633f0b22a544e3d6fd73bc09a58db. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:22:26Z), 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/GBSMU5408201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257b0800bc722168a0d01210ca328ab0a99a2e9dde79a69fe32889372fc638d8. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/GBSMU5952322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9868f70cf0727e0f137d76ebf1552288b4c70b19c9da42dc30e9425172f63c2c. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/DEUM71906343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd868d6169ed99ecfcae26d9447f66eaa57f4a23901e967fcb3f78c3a96be8622. 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/GBKPL2006531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7223afa6506805cab8aa6bde5e7975615645e182b0e7623db532e5133910c679. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/GBKPL2006528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5181c703a7eaa95dd6799e1bf4a4b06a98f8b600c48072d80fd18425424659c4. 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/GBKPL2006521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7767b37a307bd9edd1602d80ce30936df7ca2c75a6e4a5e1582e3dcd146150be. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:16:13Z), 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/GBKPL2140813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc77f8356afcd9a9ca8b51d5ab5de734268ed053c41cc9e14ec298b3a17932d. 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/CAQOI2400628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f2b1f3da85aa60387ed867dc77af353df814a40a40cfab668df8ab78640a49. 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/GBSMU5150939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745f51b5a12c4fe702d5c1745aef11db441894d5d60d07170ed8627d803a80cb. 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/GBSMU5150942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28052d8ff22089d6ede8ee10380992e7a77ebf91de0c34bc64aa6ffb89ce0496. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZES72136149.