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 0x1ae275679b0cc7e4875ba2e4da8077305000c74cfd0c8d0a0eedfda795d9b589. 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/fd048c25-6798-48bb-b72d-975af8b46c6a.json and https://artists.proofprofile.net/proofs/artist/fd048c25-6798-48bb-b72d-975af8b46c6a.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 0x01c6b9d0d52671eed7ec0feefd80949c953e476c3e8e658d96b3c6f2a1194752. Chain 2 (Bitcoin): anchored in block 957714 (2026-07-12T14:35:57Z), 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/TCADZ1827375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae460bc1224320d2bfb4ecc4d0af13912714fd9f3e4426db23fae26e100e9e5. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/TCAFE2074355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5cad7f93413954f6a0cf286d5e2f53dbfb227e5790fcaa0ec10a0807224143. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCAFT2138419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f900daa5429701edba921fe9f707a53673dca8f29515881dae625fe25845bd. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCAIH2480152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa581f0890d07620292421c5dc63b582fbe66cfd741246f849baa733e113ff679. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAIH2480160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049b93491f0307f9fdb8beaf1d861dafea10366c82abcb7ec81a7e517c912f39. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/TCAII2480161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c2794533a6c15b30792b3630ac75c98416951e183ce2bfea8a0adc0dbadf1e. 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/TCAII2480164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193dad54e4eae89a790d259c5158d9e84e9082164bbd8b82041f41055622215a. 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/TCAIH2480169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9fd06d986a0e48075e0556e812fa7be6bdc51082100a834a7d0302a001acad. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/TCAII2480174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4db63031a9e9a600b3c584d792d1b65f58ca33f79dc6fa48480c52ea58e179. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:08:22Z), 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/TCAIH2480176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d416ab8dc5836f218d68cb37ef7dd1f77ac5877fa77ebfd7a1795d20767d09d. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/TCAIH2480180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15c46023340374e543393464c7e2f3dc7ad772fb7b147bb3afd0dc875db3bdb. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/TCAIH2480184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c97d1e49f97da4eea509fc7a0d6b5e2b8a94e26c57d6a32ee68162d350cb50. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/TCAIH2480186.