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 0x3e8c48bbb0b336d99722ec7f03c1e62245278ee1b982e62d72fe30ec2af5960f. 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/46e532b5-876a-4bab-bd94-37b8a7bcd07f.json and https://artists.proofprofile.net/proofs/artist/46e532b5-876a-4bab-bd94-37b8a7bcd07f.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 0x53801669184b81bc4ff6f7b2df5baaa471c8306aa67ac93a3101258f2cb51aed. 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/GRSCM2200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66403006148edc912a68652cf4361becb36e12e99e027e9788040c0bd9082db. 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/GRSCM2200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33e630f4d4456d94f25d14d29351fc51a1d60ee36c002bdf2c064a7e17c8865. 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/GRSCM2200040.
Desperado (feat. Eribertho Cruzado) - Vocal Mix Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391255356d5f6355cbcf42c758521ba3ca3a879b032abf51aa2e65bf04a78033. 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/GBJX32032114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54f8633ecffa6d2a71687aabc71ca7d6ed80441873b1b08eacf86000221a9ad. 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/GBJX32032112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5224f1e59910e4e271a8336191752e5571d26ad2c96a424abdfe3d8691796d. 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/GBJX32032115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225891b9194eb0fdbd4cfe970a5dead2233fbef3b4313eedd9885bdaf125f6c1. 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/GBJX32032113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d546d82ce1946696258059a8860b5ce9ee3b1a70d3e71029c57adda1a116dbf. 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/QMBZ92268760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa4dda30c15689cc0e803042caea652bae7c5560d7f77de620aaba84fced364. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMBZ92268758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4abb633c845595f87ffaeb596f8fc164d93c5187055b8b9a24e6be34b7ca4d8. 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/US83Z2025950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eeffe0485c8abf498d21c2b3d03ab3dfabbb1d48f469ea31c8e62cba66b8e08. 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/ES71G2057524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6773e81fd4f05663c867e87652f0c1061b97bdb663477f59c71d1b39ab3861. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/CAOOX2300082.