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 0x3d991d202f5ae97cd1775a4a6e5df85ed15abf84837d4bf8f58c0bf666548a3a. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f252d27c-043d-417e-a658-7c010cf98265.json and https://artists.proofprofile.net/proofs/artist/f252d27c-043d-417e-a658-7c010cf98265.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 0x661ba493da155f8a0a9f3c28eb167d16bdc8c6cfdb1c701559888a55ef3c233c. 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/TCAEJ1950622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2466c480889503c41bc9166886b6d7821e7a28acebaa2b9ad2fff374d8f62103. 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/TCAEJ1950623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962ce95cb3d556789ce8f8a4a80fe7255437b38f2f9067e8db3710929d9b7dca. 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/TCAEJ1950632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c97b9c9e9819009dbdb451678bce12b310f986e659681f69639080ed4e21d6c. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/TCAEJ1950643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4918f32f6618de287e854120d5a93158df60d8497a904208b06bccbbcd571f. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/TCAEJ1950650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df781a86cd1bd9309637e48887b5b7e56ae3f779674c36d4d1631a444d5e3b4. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/TCAEJ1950651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b1aa434858d521a3be9d9bd12ea9782bb57378ef421477523dfebdcf1f5a8b. 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/TCAEJ1950656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ec19b8d5bd826abaee98f9e8166688858980e532c8d6ae6453b1ecc1063f28. 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/TCAEJ1950659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825a1a6e32e9f0015e9ab89148b9e11f83f4447a1d2b33f85e2dbd9ad0bb5eff. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TCAEJ1950662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a5f9446caf58432b851a404a349515823f599468167626c88c1eec59ecf189. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TCAEJ1950664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37d81e5ed9144ff29e0c939f9921e1cf0c87790fdce0158271f6138ce66f0e5. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/TCAEJ1950667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533836fecf68882b8b488da60602a58e5cc092d7ced16aaecd560d5f491c8f57. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USJHJ2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533836fecf68882b8b488da60602a58e5cc092d7ced16aaecd560d5f491c8f57. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/USJHJ2200003.
Death Before Dementia (Live in Australia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0dd7575252b063e6bbe2889095d06c523ff45dc5a509c7b7dce308a53ce8a9. 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/AUWMG1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d6c454cf200e38da481369910cedce7785c05da396521602be98248bce28ce. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/AUWMG1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4451f74fe4f80f605da4b9d2dc8c44dc3bbff7b44328880324e603b295e7b1ea. 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/AUWMG1600007.