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 0xd719f9cbdcece911382979bb30c8ee3dabea39e8a01690ccfb371205bad7554b. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9004fd2e-f21e-4954-b979-0a508240d505.json and https://artists.proofprofile.net/proofs/artist/9004fd2e-f21e-4954-b979-0a508240d505.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Intro (feat. Gotay El Autentiko, Darkiel, Maximus Wel, Barber V13, La Duraka, Lawrentis & Pouliryc)
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 0xee718a826651cdd78f7d8d958a13a43525317909b06a163c951c9dc9e0ae6774. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCACI1595325.
Con los Mios (feat. Barber V13, Noibat & Focus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25ec7ac2f49aea092493714cdead4ef58a7465168b398d953e9603f5f4ef704. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCACK1553582.
No Son Calle Na (feat. Alexio La Bestia, D Enyel & Barber V13)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf1f41786e3e89f3b31be6a9c2dba11bd4d771ae60dced9883b11f166e7bf9d. 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/TCACK1553590.
La Tengo Encima (feat. Barber V13, Kas Pr & Lawrentis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba84abba32da3917e3134c3ab0f94acb51766246a084fce2cd51e8e6e9cf0437. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/TCACS1601381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf8fa4ac92f43932642e8b2bd20c6003d14e3f7ad1c5ef801e8e5398bb2fea2. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/TCAFQ2131360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7584a2acc1d4a18a48544a7274c73d83f31d3c6fd50319cef8118132d766693. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/GBSMU3309989.