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 0x375809127ee65a2658f74d48f064d9840fbaf9fd84e5cd5acf65932606ab4d0d. 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/a7a35afa-bc7d-4f88-99d4-46c2c97bb93d.json and https://artists.proofprofile.net/proofs/artist/a7a35afa-bc7d-4f88-99d4-46c2c97bb93d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Now You A Single Mom (Jersey Club Remix)
Now You A Single Mom - Jersey Club Remix
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 0xd3cc00d4c91c842f5cf5d8ed447ec716aa7b4063f7f83b40ae0206ae1e5fc051. 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/QZTLA2445641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5626232fd91a20eb3bd6926175f54f73b30b845f2f52fc666933e8bd07291bc. 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/QZQAY2494480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473747fbb0c973ca9721c22848057c3c597dc73ed135fc97b86693cf47b87719. 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/QZQAY2433440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92599672c4fe00702a87797cf27d72fcf89f894516c99434226570e6eb8a8858. 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/QZHN42462762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92599672c4fe00702a87797cf27d72fcf89f894516c99434226570e6eb8a8858. 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/QZHN42462762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92599672c4fe00702a87797cf27d72fcf89f894516c99434226570e6eb8a8858. 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/QZHN42462762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f268bc2b4e79fdde18b752b1a932e23e4a93ee82f918e0500c1d5aa6c75e115. 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/QZS7J2479677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5626232fd91a20eb3bd6926175f54f73b30b845f2f52fc666933e8bd07291bc. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZQAY2494480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252be95fbfa4c3a50f2ce025cc0975bbf0f7fc8b3a8cf46679bb10aee43765fd. 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/QZS7J2454827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c729c56cfe14c2620c82dd55e3161bc32874ded8c2a84625dbdbf0cdddf184. 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/QZS7J2427947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf073e2760e765249a46c62d601215ccdca1591051c94e06332d5cfb48d47b88c. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZSYP2438386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a95a4ad09059a751b26b3ea0b1d419e4198493b6a7858a9f22e61fa6b3677f. 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/QZS7J2433992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478102990a4b16fd8afe5c8d3f5ce764e91c6b685d240dde5d58556744e7d48e. 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/QZSYP2464363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a65f13a3e7c1ca22edd5940612b6d482fb9b92f350de2bf6935f2a79294874. 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/QZQAY2489425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf555d4b8e478db65a9b82a479e130ee3f3cc0c2130f2aac23ad39859f69f9958. 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/QZS7J2563699.