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 0xacb5a7211ef31f9ed10035d02b1edb43fe9812796878c0d8e69faaac8db91be3. 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/cfb64fce-d9d2-45c6-9b2c-dee2b36992fa.json and https://artists.proofprofile.net/proofs/artist/cfb64fce-d9d2-45c6-9b2c-dee2b36992fa.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 0x5ec2cfeb894207ace22320b42d0ccfb4eef1df4ebf55aa63dda5ddddfcc48c45. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:26:32Z), 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/TCAHD2309273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b12501a139327603e554270fe478050c985d6e5f753b347d6cba0fcbf8e22d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:42:52Z), 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/TCAHF2372487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f99d5f1947b48dcd0c633df299aac3f59935228c255cce6a3b4c446e4b8bf56. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCAHR2381579.
Are You From Tennessee? (Giddy Up Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f666ad78dbf076fdc97133cfb4cc34079a1a456b4b0843227d9651a5df50dc1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAID2406865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5516975fb3d1bbf61d890b89e4825e5d99445d34cc4966c7dc7afc25f43123b2. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/TCAIE2492966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9bb2518b3c33e037d4aad3c817c68079e76b3ca3af07a1bbc58c7a7fdb8b34. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAIR2494714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c6d46464b40756bf54c1580e2037e23c84c889a29c45e8a345e384ddd9267e. 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/TCAJE2504750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4321e0244e2d595a3f6e69c68d51658b4a358d9cfd52bbb6ab42334955d3fafe. 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/TCAJN2545313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301f6300da22a6a6035c4879d5356dcea9542a8e262440ff08570b84d0b8e9d7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAJY2567406.