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 0x94af210480075cf23da429a7061dc80486de09538ae6a1843a6df525f0aaa4e0. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d0afced8-14e7-4fda-a88e-5647f478ea15.json and https://artists.proofprofile.net/proofs/artist/d0afced8-14e7-4fda-a88e-5647f478ea15.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Keep On - Daniel Wang & Bernnan Green Mix
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 0xff53edb4880525b78d5ebbdf7b74a119d433888431efcb51b59a508d7529c223. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/GBEYE0200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f214ad0d06c485e107a144240ed086bb4512501e174554601f0ba6a929db142. 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/AUCE00800442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283db573cdf2e63d8de642adffc358b4f1ba2c3ae89d0a1d7d9e451e521811ef. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/AUCE00800443.
A Nice Hot Edit With... (Download Sampler)
Give It Up - 2014 Remasters - LAID Vocal Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9daa3ea761e69e15e1d7f73be90fe8330c87ab55fc96e786f02d735e9ce40dff. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:29:05Z), 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/GBEYE1400101.
Barcelona - Paris. 2nd Flight (Select and Mixed by David De Barce)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cf98e348b7af8eb0ce0c973660b70c0e6754f81d72df6d660d1bd21a552da4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES6101323308.
Barcelona - Paris (Select and Mixed by David De Barce)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c924d2ff5fdb8bb12966356ee3fdfdd2ffa0134b5538caa9211ce5e88e5300. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:36:50Z), 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/ES6100220909.
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