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 0x37d55b31c5e99552f7661bd94f67559e0ba696cc4b0a9b2f665189fe20966f0e. 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/d06dbd4e-ef70-4bd5-9c23-adf852115ce0.json and https://artists.proofprofile.net/proofs/artist/d06dbd4e-ef70-4bd5-9c23-adf852115ce0.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 0x38ff8d614b45ba2e8c26f68990e49bcef71adf16282649953a2414b20a3ca4a8. 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/USLZJ1734020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12180033035c62fd0c6dfa2981cdf3261ffef1c75926beae8022814a044a9c47. 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/USLZJ1734026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbccc6a8d37e4b06c037dccf036627ddd1d30d8c4cd3fd9f278a5a0661ea6b20. 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/USLZJ1734028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9473515a742c0dba1aa1a00c3857f058a57a7f9118373b9060879fcd634d779. 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/BXHBP1900611.
Pausa #Omundoprecisadepausa (Dazzo & Karuzo Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f5678bf6d85b1cf70b1afd44de39d496d5006828ea6ebd4418fb6ff7b0632a. 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/BXHBP1800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54203b086c12f9b4c4aaabfaefc1d8bd66d6f46fdd36e8b4a95c285c92baff9. 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/QZ5FN1831629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679b97d16afd4265902c6413a46210b01e4c6f1084a972d92e4fe6388ef4eabd. 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/QZ5FN1778164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf13732c64bb7104892513c8b3b11243a979b5c16273c55b2d221ac2b6a4c7e. 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/QZ5FN1764651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc111328af16e62a1a6bba32d120b31c2bedfa2f905be79b321a6303cc3e062e0. 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/QZ5FN1709193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819bd1d6b36ecf3937f0e6a46862dafd1f9672965e3427fc68f25b62507f52cd. 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/BXMEA1700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3546e3ac37c2e76249dda0c8afdb9bf4c6fa271dbbbb2de813fc09db841c20ef. 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/QZS1Z1620248.
To Slow (feat. Ashibah) - Vintage Culture, Lazy Bear Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214759f0c1b27fd76fdf9975ab6b46c26a76903e43338dd639a1fdb0729172ad. 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/QZS1Z1617959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2647effb78d8945f295bb8fb81bcbccfa9e878948df6a2aa85f68aa4f4e7377d. 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/USLZJ1665832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c500392b687f1a6c281436ac9ccae83fe3754a4378f03c2b97359e1c1841446. 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/QZ5FN1765217.