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 0x5e718ad6485703a3c5e0cc122db0a33c4f13251a46791b803f90cc567247ccd9. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9395ffb-3c65-4520-bb87-b0c8a48aa7be.json and https://artists.proofprofile.net/proofs/artist/d9395ffb-3c65-4520-bb87-b0c8a48aa7be.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 0xdee2a099a987b6a5f623c6c1c7bb4ec0d624ceb13adefa50b58b0cae2054e205. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:07:39Z), 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/TLVEM2457229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a82f03519d3a0ed7b904def71f79c4ad805193c5122bc14f13d7b8b3d7377dd. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:42:17Z), 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/QT2VB2496415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151f57be034034e4e851c3257a7dc15e0f849f4d9a14ec6372af5e824a1dd272. 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/QZVEM1864424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b61155befbec907dd44db85922a2181ec52815122fc932d82105a22e0e122f3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZVEM1837635.
Misunderstood (A little Mad A little Bad mix)
Misunderstood - A little Mad A little Bad mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f8f7d1befb1440eec6dd4d5ca4a447492ee80107eeec0625266316fc92f4b7. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:34:05Z), 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/QZPEW2519738.
Looking iNside Looking Behind (Black Cat mix)
Looking iNside Looking Behind - Black Cat mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e379f3114225e04437bf7883d8a557627736b56d2bfd46824b383dd5d49308a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZPEW2543470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004ca1f08f0aba0db8389630fce9b2fc4a1c4aea716f9feb2180aae2ab81b689. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZPEW2559021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de825f6b8b5f2875238fb65569055f1580f1d6e814ac3f071ab1bdf773cf82c. 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/QT4K32589022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc544805043628b4af00d875636256653d4aee70fefec532d19364a868622c2d. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:35:34Z), 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/QT4K42583310.