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 0xca3b53056d4c46ee6d6951125a6d7143c4c954d76cbdbf918e1a5577645c5ad9. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c1fc304d-59fc-4491-b903-60d99851e2d0.json and https://artists.proofprofile.net/proofs/artist/c1fc304d-59fc-4491-b903-60d99851e2d0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Compilation Summer Dance Commercial House Songs Top Hits New Best Music 2013 / 2014 (Radio Cut Mix)
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 0x63ec5c0d895b7ae4a801f8547c5cefab88593fa26ed2004547dbc6393d54d52f. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ITBD61300957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3840d95ff6cd0be02afda183f883131c9788076583d1dacc18cf44bbfe4ec47. 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/ITBD61300959.
Summer 2015 Dance Commercial House Songs Top Hits New Best Music (Radio Edit Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ec5c0d895b7ae4a801f8547c5cefab88593fa26ed2004547dbc6393d54d52f. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/ITBD61300957.
Compilation Summer Dance Commercial House 2016 - 2017 (Songs Top Hits New Best Music) [Radio Cut Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eeb64f33575376855e5dfdac0414be3b875ad4c8bf6d81ba571fc8f5bf7b938. 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/ITBD61600664.
El Malandrino De Caracas - Fabio Kf Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269c1e0bded07b53bf4cafaa4ca854e54bbde850878de109c5835a7ea7090ff7. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/ITBD61600666.
Latin House Summer 2015 / 2016 Greatest Hits Top Songs (Commercial Dance Compilation)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ec5c0d895b7ae4a801f8547c5cefab88593fa26ed2004547dbc6393d54d52f. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ITBD61300957.