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 0x5774760e49fe0330e8447690b34a15a5e14b3c2dcbc9d358c47346545e79cb4c. 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/f1c4ffb1-c383-4c9e-a460-ca2211db8916.json and https://artists.proofprofile.net/proofs/artist/f1c4ffb1-c383-4c9e-a460-ca2211db8916.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 0x7a99c74e1d43424f381602cc6bce2a84fe3491a26c942dcf736fbf5877b62b7b. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:35:40Z), 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/US83Z1928343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667264b09643092db560b6052720e094c047e95ca6d636b3567550fd9c9bcbd6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US83Z1928344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed42e8d78ac0381dc90635f2a996af94642b1aa8c9d596d041ae4a0a2068d4d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US83Z1928345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36bf774ea19cdf6f827d7dc8611177dd9582e6cecd3cb92f3f7469855504e0d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US83Z1928346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91405ec9908033806a08afb3cf177b9182d013decd30c0d2b78667284f85339. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US83Z1928347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3daa1212b5bf1e0492b867b262b7444c6aa8af4c15d2aa5e9b581554752e9e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US83Z1928348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91beb4b182544563825e400035c39a241fc410b94de4c4e01f74f76b73f56534. 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/US83Z1928349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d2ba802526dadd0beb10373dec035e1c444cf4c3ce2cb7a4d860abfea5ac11. 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/US83Z1928351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20489c432a979fc205574d1b262cca8b3c650632d68281989073ab6688eb4087. 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/DEU671601266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a2662e28368a5b84669eece95531ac7a28e1f793ede205455d2ef796eba1b1. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/US83Z2219257.
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 0x2a3e260d45601bca2a3a0aa24bb5e28ae0c83ff0d5cc502f50abaee70f6d8a08. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/US83Z1932388.
Sensativas - Dolph Underwater Love Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3ad7ef5d1fad9f4810906aa0aebc34c4b9ae1164025fd2ed4de5624f919641. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/US83Z2006844.
Ibiza Sunset Dreams, Vol. 4 (Compiled by DJ Zappi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a298f7cf7de9696cbdee169c44e989191c76e93269bd05509619ccd54406c2. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/DECH61200276.