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 0x450227eef6686d30660b1d1b2da02f3176e9e4317805b3604ad53757dba7d96e. 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/c26a32ce-a6cd-40be-8c49-d683b6119780.json and https://artists.proofprofile.net/proofs/artist/c26a32ce-a6cd-40be-8c49-d683b6119780.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 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 0xfba84c2ce82344fbea4512e8a6a334129010e47c8755fd748b04a1836000ec88. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/GBLFP2471289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9c54e9377d9dc2e0de84eddeda7bb5c7ec6fcafacc5153398b07edad57ca38. 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/ZB80H2400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6be498ba6f6bc4906e8f9fc4fcf19ddd4df3b7afdaa65db8ed2e2bdc0ed21f. 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/GBMA22432713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d63dde327696f222c6124f66acae0054f2514b7d6fa034a09fad2620dd6070. 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/GBMA22432719.
Abo Nokthula (feat. The Exclusive SA, Scotts Maphuma, Kabelo Sings, Bontle Smith, 2woshort & Stompiiey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a59f47cbd5da4f7d1bcb4e90d9f5c0f79b48e1079151d3eb583975858addf4a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZAA012400339.
uKhome Lotto (feat. Agzo, Optimist Music ZA, Seun1401 & El.Stephano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd671ed5cacaa90243ff352ba334d1f761e760188eec13163b6b2a57ddd43a1a1. 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/ZABZ42400016.
uKhome Lotto (Edit) (feat. Agzo, Optimist Music ZA, Seun1401 & El.Stephano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ea0eea8d40f83d26403ef4db02c31fc0e6b718328775f8bbf12ecd358e08ea. 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/ZABZ42400017.
uKhome Lotto (Instrumental) (feat. Agzo, Optimist Music ZA, Seun1401 & El.Stephano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17dc74b57d82bfc796d2d38c3b3efa7b119b6a5dbec15a76a0e2303525d09c7. 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/ZABZ42400018.
Jaiva 7 (feat. Seun1401, Dinho & El Stephano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd39423199fbad7dfd2d3ad9eca6a53510dcf87bac7a440136e23eb6dd702a7. 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/ZAVPA2400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6d8e7cdef52a58522f27edb59fee882ec838d79f515ef66a742b58d04f80a1. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/ZBI3J2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5384891e48ab584fa0f3edcf826bd908df978fb8dce86d8de3116dfd0d456b. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QZN882432120.
Intando Yakho (feat. Seun1401, Musical Yanos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddce51b7a40194d6f943bfc93b727cd05d9dc0e05d3889fd2aa3d4e15312146f. 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/ZB2NW2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1498cb79d4cdc842aebfdaa84811182dc9be11d8ed402ffe6abd485cb50c12b2. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZWDW2521355.