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 0x5a5646175b478b15b7dc34eec484db89ffe5a01f301fb67e9a74b8e314c67862. 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/b5a37176-d3d0-470d-a9c5-44a278827d4f.json and https://artists.proofprofile.net/proofs/artist/b5a37176-d3d0-470d-a9c5-44a278827d4f.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 0x82a81deba5cb035b52a0ffa0234ca05b15b331c1b7a992e928df536e3729c8c4. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T13:26:15Z), 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/CA5KR2045588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1832d4d97e72a6cbc5c51a6b1cf83929cbad0134c0655474bc2cf77f4fbfbd. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/CA5KR2044130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6c420205b61be499717df3e0bf2888a7af8bf6694c4fbe7c8f41c3a0acca81. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/CA5KR2052757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc551f28358fe71cf138d2abf87fdbe26923e47291049bebfd4453d36d823d001. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/CA5KR2050759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1948bd778274620485da6fc53b0a419fe63f094c352f87592a16886f8a04a34. 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/CA5KR2130842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0539ab696dca376138fea53c53ae8c7edc4dfb5d004632abab823b29ba5f1587. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/CA5KR2149189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824eedd8fd5a67a132c16be28a587d45b2fc1b681db651f54cf0e267ce96218f. 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/USUG12309488.
Extra Clips (feat. WizDaWizard & Wam SpinThaBin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194c4df52df073ac1530c98cb431787af4d2a087732d0acb88e852222c9fd82b. 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/USUG12309492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1097b53adda9db83b9dd4f4c0c50827226adede32a9c08449a05e723274f1fb4. 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/CA5KR2208125.
Church On Saturday (feat. WizDaWizard, Wam SpinThaBin & Syko Bob)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30545d5d6aba732a31ff34a6f4f9ab7958b7f9f9adb50b3ee7fba7bd169f1f8b. 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/USAT22304652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb068582c7ac5aa21df51ff5249b8add7b1c751e7d08270030a46049875da4299. 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/USQX92301979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096c70e7696f51ff64e53f0a66296462747f1719516b025a85ce4a405ec529b3. 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/USQX92301987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e601e10c00a62f60a1f1293994ae8ee315dcea36546b4306284333be890e3d9. 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/USQX92302353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce910a7641ddd046d470c2cdd8f70127a3f31bed3dd5582b2cfa3e4aa4acf83b. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/USQX92302362.