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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a548769ba91171d9f03fd798a548d5fa9f8124ac15f36a59c0f8fd5985f4191. 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/b3130e45-c968-4543-b22f-30b70c56bfbc.json and https://artists.proofprofile.net/proofs/artist/b3130e45-c968-4543-b22f-30b70c56bfbc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Covers Uncovered - Live Acoustic Concert, Vol 2.
Covers Uncovered - Live Acoustic Concert (1)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9c809cd19caa70594b5677c10618cdfe84d8ce6cc6acd6f9b45a6941880c09. Chain 2 (Bitcoin): anchored in block 957842 (2026-07-13T10:08:30Z), 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/USTC10612949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649c1aa0d51203f21313ff7b90f4e255c9ca75eefbffe7bf1bf8489e92106c86. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/USTC10612952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2da700b1c76383858737a950faa01549f97a28fef7e0cbfdca08f86fa40dd7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USTC10612960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc686362bc287ddc114fb4f332c52172ad032ef1fb2fd5641cb8e79335c95a5e. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/USTC10612961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21efc4de13904177cc0af9b04b5d5fd0298b2ccab3f68a97a3a3e4391146e9dd. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USTC10793043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36283e2c1837e07e785bc3d49d871595c5e80b660e6f495cc03d6b78eca18d04. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMPKX1454481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e34698d131399725b7d7fcf8c4c5914e8c749edd34f78ea80a930df478ea06. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/QMPKX1454486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe64b86e21bd5f501447ffa8f3aa20c606e9b019e55744d8e312b9452e292de5. 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/QMPKX1454490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde8ee226e10c8935d317520579770620b149a6060d14844c52e294b1d7c9493. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCABZ1497532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed955f71d56d81a5d6fe6922b2e6ad9d9a6defda922ea882d7bd629622c3b865. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QMPKX1494563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac17797b94bb9d1a842f7fdcf8def065675000734e1cc9eb3d9a12ecbdc4ed12. 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/QM4DW1502927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34af020bba2e6433f574a6f2df205676fe99a4a759e943eb3d24cf14e1088ca0. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QZHNA2523282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60330bff259a2d135740712a94141d0f74b4771a878201096256ca8b05ef1a7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ782575032.