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 0x8d1e9971f24b5ce7f2cdd05033d8a4aa86facf74bd972970bbc08f75e9c439f5. 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/3dee38cb-01d5-404c-b01b-5dbaf1af6d18.json and https://artists.proofprofile.net/proofs/artist/3dee38cb-01d5-404c-b01b-5dbaf1af6d18.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 0xc4c90b88a69ea242b9320da12abd84df0c517a665205270cbcdf1daba9db533c. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/ESA011658971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c90b88a69ea242b9320da12abd84df0c517a665205270cbcdf1daba9db533c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ESA011658971.
Give What You Got to Give (Stripped Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf556b75f56566adc0919b9b66e6829b08d18e6f0a97eb5c7ed4c464a253a7b05. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZYXP2357085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf556b75f56566adc0919b9b66e6829b08d18e6f0a97eb5c7ed4c464a253a7b05. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZYXP2357085.
She Makes a Dead Man Dance - Single Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d3cc9e4e0fd79ec78ca48ca974ab470462b839fc42ab416e0883bf403fdd86. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZZ972364431.
She Makes a Dead Man Dance (Live in Patronaat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9734ce182dd43234a1ba5f2966e1f985aa0d7a1131a35aef05683a9fe7309b84. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/ESA122493662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33e70ad1fce944927877996808f13ed414b8f232829a781af362e0dcd0e96e7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NL2UT2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f0414e45836f13bc911bc74f503738fafc162db20e49d1e1a701369725f5a9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NL2UT2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d9b6882402fc79e5f1c2cb6d83b7fc5431b74f843e10b9637bfa6cdbd7fd79. 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/ESA122478464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9bc1490d7e5ca37065f175e6c0706bb492bf6c75b57d6f3b9f00b3d34860c9. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/NL2UT2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50dec0737ca5c93b307a7f3d9fc36218e40f331f9aa8263b44246035ddb3d5ae. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/NL2UT2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bfc8bd0fcb159d826ca1fe63cae0d4ae6db11e56cf13f7005684d9eeebd097. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/ESA012498183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07764e6c6e45ea652f129013e8a4963e39ec62be0ec55de3751239d3f8230015. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/NL2UT2500012.