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 0x892a9882be2116f6833e6d79a3c06298cb497b86025828988adce76f5fa182a9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33014ff9-7266-4e76-b9cd-6a629e4f52ba.json and https://artists.proofprofile.net/proofs/artist/33014ff9-7266-4e76-b9cd-6a629e4f52ba.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 0xf4592b901a467dde867642bce03d1b6594e3df741700eb51282560574f2fa8d0. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/ARC019700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfe4f1f93648de5b47046a4a665dabeeced9555ad29814f700f3c86d91823be. 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/ARC019700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4aa7a697d644b6c276e48bb45734a7b0abb0eaded6eba18da8a6a4f6160424. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ARC019700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242c9429f4199bef758260b0ea983ee67fed74feb8836cf3b3ecf1a607832888. 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/ARC019700004.
Chacarera Santiagueña / Elegua - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5c4f5cd436c9c2ee41450906407263ecef7f6717bcd9363688a4f4c71763fb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ARC019700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b093aab166acbbcb4494f00e927915ef8f4ae4c4a459fd4dca5a60124a396bf. 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/ARC019700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fdb821a46d66403b051887162b541a5a7fbfe6c32e4864deb131317a4607a1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ARC019700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0a3fcdde642ea1386a398e77726480ea755aefbb2cc62e2aa5cecfb039726b. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:10:08Z), 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/ARC019700005.
El Pintao (Gira por México 1970 Incluye la Misa Criolla Arreglada por el Chango)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c288a990c238e71e75066f75530b94c249b9e8f27427f1e595bf1506b5be5dd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEN960530604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48133aa060db2150a04d627d8556b632449026dec446e986a1c7fb3b137ea481. 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/DEN960530613.