In contract bridge and similar games, a finesse is a type of card play technique which will enable a player to win an additional trick or tricks should there be a favorable position of one or more car
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 0x102b9e29c53b4f5c65c37528ce255a85b3ebb6403895f5ef0b94438a29e19035. 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/451cf0e3-9fef-431c-9d64-9cc584af7b95.json and https://artists.proofprofile.net/proofs/artist/451cf0e3-9fef-431c-9d64-9cc584af7b95.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
No Love (feat. Soulja Boy, Miss Bri & Coldway)
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 0x528a3fa08eb131ae5e392655dbab5ef315e9cc0fb836b928a3285e6735ddcf10. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUYG1130841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa04e584d3c6f96d55cd4c5e7cb249aa233a2c951a2b9ff28a14ce478c7e8d0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUYG1130842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90d49ae39ff610a0f57ad0624ed8d13a8797e116940996b61437f35e059a435. 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/USUYG1130843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2dcb872da3547976bff1f9274795b1eb89220ebf27b5c5a0863b700e12ea938. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USUYG1130844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280e9532d0825c035b6781665e6a62666c2f368815869587e2f6cc244e35b73a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USUYG1130845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074336f1d0273fd18aabf15c72bdbdbd23297d976a9ed83e6909051ec5d926b8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USUYG1130846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78987512e4da30ab4fba0843dedcb0d35795bac96abcba7ff3ce33d8ab5f0487. 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/USUYG1130847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e9cf994d3d50bdd014222c4e1691ba82b53dad19910d82cdcaaf249823d33b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USUYG1130848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab78ddff4d9986f23240b68a4d23042c0c7aa907391977198afe80517d23f1f. 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/USUYG1130849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d00b4c509beff681507e0d2289b224b04266bca72b8aeb9b0a126486dffca8. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZL5N2560571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6fb6ae9b94bcdf170e4d7c3be11af4164d289ded49f3f79fd24b458227baa9. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/FR8GV2288780.