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 0xfb36da3815b0aedaeb08dd94cff60cddfadf548e5968194c67cc0dbd31c03a87. 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/254df218-fdf8-4564-9d6e-b7ccada485fe.json and https://artists.proofprofile.net/proofs/artist/254df218-fdf8-4564-9d6e-b7ccada485fe.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 0x2dc515af75d6dce233d41d3b62ab1ad8406c020669657606d3ab7ffad50ec3c6. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/GB8KE1756092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bacbbb27069cdc78d425083b8f53e78e963c2998fb1e5fbcaa0cc36bb78cdb4. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/UKACT1864815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38965eb48290aa2052f99535384c2256da9eb57c4b6af7dbf336342db6317cfd. 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/BXB1B1900043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248b4edf2e11e2cbd92e2806ba344517f1c9f98bd7e916b3c5a1351c7fe80f65. 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/BXB1B1900044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b208c3390f6da87daf7350216290c4fb97ac6ae6be86bb37cc387b398776d7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBKQU2380295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888daf865cc2e4f8169462b2cccf4a573b365d629b69e46cab961b3d12202079. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBLV62315060.
Deep Inside - Odasoul, Victor Soriano Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ebfdf76d90b49eef8144382fc1da92d096a041186334e5b1235af80a9359a3. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/GBKQU2419587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1ea163d219a5a8c9dd1f9fece495fbe733fa272261110f016aa1a7622c99dc. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/GBKQU2434718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65620fac443f1291d263d6b1684bdc92b47070b327efe356e8765b03d1be6c9. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/GBKQU2448403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67c40224ac38160f6059fa98861e39723d9742aa89d71903b2fd11ad03ae04f. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/GBKQU2462801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac2860cdca5b01209d7171c090132b160900a571cbcaa0d9d8c99ebedc2949d. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GBKQU2514312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4199bc3646229189713f1d73da212104d3f9bd23fdb5844faac3fc0946a6c971. 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/GBKQU2536344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2756f1376eabbb4c8c234962c26c1defcc831e3d09816bc576156452c29a2a1f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/GBKQU2536345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9eeaa11346e12e4c2cd60948e14a9d2b4110dbc9e688d640250a88ec5a8e8b4. 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/GBKQU2585926.