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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8702c72b2ddaded548411fa75d19d0a8fe918fb2efc1503419845cd39e9bf726. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6894e0d-f388-4055-9470-2a073108e264.json and https://artists.proofprofile.net/proofs/artist/a6894e0d-f388-4055-9470-2a073108e264.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4138fd4b2017cf359e16d768a6b968039dccdb39a9da14eab7eb68b8544226f. 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/QZWA32200497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1a8a6d64a46f2bef3256c720a6118d5311fb2a38f76f1f24b279d9aa77bfb5. 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/QZTAZ2465176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb2a669ec4a8774ec64df06540aea22a808dd8a112fe57f4837606b22dc897f. 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/QZFZ32483675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e35152ddbb7d3593ca87408c68702993a25ce6941e782d8e3061e3132428c0. 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/QZWA32200610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e548412c660dc9905b94965b2b51ff96e655fbc77b4f0713e22da63a289f52. 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/QZWA32200590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219092d3de0aa56d9e2650307c1c553b4deede8f5af049bb27a859da19d11d2f. 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/QZWA32200591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef785df92bbb944abb44bd844ee7bb9ec171b77f2db7f455eec98b74ff6a11e. 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/QZWA32200592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d044b719b7e0089b399329f22172efea90eab7f1e0b43816fa5fb8b23db7964. 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/QZWA32200593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd787526f198b2ebdec7969e6a8d538f70a02681ae447f3a8d980c369c8c8b4d7. 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/QZWA32200594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe94c7df5bf4392af82198b64ca87e20f8b424eb280392ecd5d6c6277ef37367. 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/QZWA32200595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964e9cfbd30fa6bea423d1efbe67315383a302a673cd68f491dea79b4dd125c2. 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/QZWA32200596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d2984852220df722b4e4239176cd6cd6e3324b533102658fd799fc3d7e6b39. 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/QZK6Q2372139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878f2d750c7e2a2ea7eae5ffbebc0ef392fc23945dcbc40535bfd439302be3a0. 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/QZWA32200448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d75b5576399eee1372a1ed5ee647976b76e9137bb2b9219cf2c13cddac4aa8. 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/QZWFG2377450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c199c5c9544cbe7cf5d68eeefda0f058a0b600f6f5793da5d0864156e79c07. 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/QZTBB2372009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb2663ab76ef2d259571720e6079b075a2f033f573f90bca129206923b25dc5. 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/QZTB52338964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45024897044b84c47c2032017705567312006d35871aa9815f3f78d98dbfb1f. 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/QZK6F2375046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d2984852220df722b4e4239176cd6cd6e3324b533102658fd799fc3d7e6b39. 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/QZK6Q2372139.
Cocoa Butter (Remix) (feat. Kojo Blak & Chop Daily)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643f922024040ee35f708a7668686322920a087ab5a7dfcffd92bc80802e26e7. 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/NGB132500068.