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 0xc71f1037f240c3d7cfb6a1cf537903ba9ae6f5e5b8ec37a86d2650d6e8454187. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fbcfed75-cb56-41b9-89d5-fb5ccb0fe202.json and https://artists.proofprofile.net/proofs/artist/fbcfed75-cb56-41b9-89d5-fb5ccb0fe202.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fast Forward EP (2020 Remastered Edition)
Da Madness - The Martinez Brothers Feat. Phil Weeks Edit
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 0x55764ec74343f8029a160b2fcbc6f7cfe41779f12a805749321cca60541258b5. 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/FRPGF1300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcbe6722715d47449ee2b0745f127e8043a0be6a83c56f38ea2f729ab9f8347. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBKQU2207156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a79d1e6b891464798b50e4bb9170a3ba9bec1f8402ef25120abd025e26f075a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBKQU2314183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1d599289d8cbbb3035457cfba7ff7e75f7c5934d7d5e8e1503d5b7c82cad33. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:56:42Z), 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/GBKQU2314186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348bcf89e0cdfa11284c57cdf885a7e2128f69328cd52314170d5f64551efcb8. 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/GBKQU2500141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bb9460c229e344bcc6433eb76773f448df877dbd847e836cac8967c7314080. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/FRIDO2510442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4235cda370fb96613dc02730d276f3214c36228255b6df804bd346d26e1c40. 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/FRIDO2510443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0902d5a73b2b169962c98ccd7c5e694319642b12b4e26079cdaaccc05a405d5. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/GBKQU2538398.