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 0xab9856dedc08f74c3220d44f7e18a302bf4145e5ad70ffb60da521dbf6c6c8a1. 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/1236fd0d-83da-4673-b682-84f7d05e434e.json and https://artists.proofprofile.net/proofs/artist/1236fd0d-83da-4673-b682-84f7d05e434e.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 0x09bb57907ebeaaa87b58c2336b21f33394c94bb4ae0b47aaeff049cbe01079f7. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCJPW2354009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0809092075a94c97675b2489dea42419ab5eccb7f70c28a0d0e31767163d133a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:42:06Z), 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/TCJPW2385430.
STARTED FROM THE BOTTOM (feat. Magic Junkie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee3705223d1599f7416b3e13ac8f9e19fc3b5a37c3e7611171231b64c25cb60. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCJPY2332994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40dea82929d33252d6099831d906fc6503e626ed91f7cd2a822c8d58b02f7c33. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/TCJPB2487490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9287eeb6bd58425bffdb1c09fcf7dd5bf518b506bce09d9cb0d47c1d033da250. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCJPD2563437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7273794156f4c61d3db7e83d6c4d91b1c39cca3badf928a31313f970beac48ba. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/TCJPF2500188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cfbfb9562338250d0d4c3dd768404d4105dad62af214ba411fb58d12ed61cc. 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/TCJPF2582590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e95df44cd6094b9b2acfde984bc6cea0fabdc36bf9918392e9b1d1c3110f13. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TCJPI2504730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6b82077ef0ca605c842e20b7c73520c03790f90a161c8c5999da59652a9db7. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCJPI2564060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74468c57f628d54a8473c7d149086eeb466477dd920a80e8a93ea2343287c7e3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QT5M22586432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1f516a5b5643643b89e4145e82c41804f9f9e86ff66a0993a1da30b49f2a69. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:56:27Z), 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/QT5M22551906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0dd08beec07d00a6293323b60829492132bad21429097875d7f06ff9331f193. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT5M52597756.