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 0x27f9db8f9fbcd5030b0550131a0b9c749dfb34e527522e377652f926fd781a50. 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/e266918a-68a0-4e37-ac70-be6027554738.json and https://artists.proofprofile.net/proofs/artist/e266918a-68a0-4e37-ac70-be6027554738.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bailalo Como Quieras, Que Esto Cumbia Villera
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 0x189451865619983a93286d447b5fe85a69185f312b9b2f5e129a073d59b4b5bf. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USHM81755547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9fd3c32ab21cbfb67bdace3f91575e3dd0890f0032831ffda29ac48e6fbd11. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USHM81755552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2751f88450456fc4fb82fbc48b4e399a8409579086a1d646373b8470e5ad88fe. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USHM81755561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cc05b74805518b27b31f1cf63ec9eb85bf8783c3cb0b1d9468155b9e58d04d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USHM81755563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264c8c58eb554eda77214ea977a678db4715bc1067db21861969b4cc9b98e3b6. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/USHM81755565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498878ef5bee7e779989f36e029ccaafc29a6b81751de44728de9ebc6899f8a6. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USHM81755568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a968eaa76a056e4bde999b55558cc2df14e700dafa314e533e70b5bf4d35a9. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/USCGJ1925398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3364955b01f8a70aa988cd77fdb88a8358049f0926bb639b3d4e9480c7fc37d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHM81956051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9e03ad4a2d44a616dc18c789d9902093c58ac508a52f9a2f530d3e0cac9e2d. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/USL4Q1922314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ac14cc058de0d4e3971a9833f8408c8e83f364a67a6977bb145e59dc498833. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USCGH2039120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21027dc7bad8c6bdaf421343ea0984ddff3e3f188fb6420ca18eb1abb3f2aaae. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USCGJ2057842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ece978a39c740606df1a4314bc425c1a287ebdfc8ec2d8288f6f287eca065d. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USHM82163868.