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 0x2016c0502d8a9c03694a8309299a77b332ffe673c8247fba5d68e046458a4f5c. 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/ee708cd3-41c4-4cb1-8b7f-66e5a066095f.json and https://artists.proofprofile.net/proofs/artist/ee708cd3-41c4-4cb1-8b7f-66e5a066095f.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 0x582c83aff046a3d555a3eef39aaf69167aebc44625a542b882824e078774ceec. 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/ITYKP2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3c810726657a8748cc48b6cb367d953c7bab6191f0f7f591faf7b7705fd7ae. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITYKP2300033.
1234 POSSE (feat. Faneto, Artie 5ive, Astro, Niky Savage, Lito, Low-Red, Kid Yugi, RRARI DAL TACCO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab5b05b0b4eda608e1991ac31b1f39c3e914337c0cd2477eee4f746758b32af. 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/IT4U12400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276b80138ead763061741a0e5663dd414b99ca0fdd7cabde6df2c8ebdda9db9e. 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/ITYKP2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74debdfa016c534e144bd932751358307ce15f4a37082e35131de33af2032a4c. 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/ITYKP2400013.
Tropp La Trapp RMX (feat. RRARI DAL TACCO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ad9d15552b974ac44b8a2dbdcc22f8d87df497e80784566603f994d95e494f. 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/US38Y2414620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d265db9a62252bdaae4dba1d807fffeab0135f63b483d6fdf2d677f356e0074. 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/ITNXV2300043.
4088 (feat. RRARI DAL TACCO, Nathys, Young Hash & Blocka Beatz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18f8dfb26bcccfa6799fcce547cc676cb1513056cdce1c9435a9c9c5e3db998. 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/US39N2302573.