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 0xd6e750c844783ae43c66e3e5134797ce6a1a8878106670e43893b8d22c68f58a. 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/59798f95-b3a9-4c69-91ec-a597c728fe5a.json and https://artists.proofprofile.net/proofs/artist/59798f95-b3a9-4c69-91ec-a597c728fe5a.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 0x6fa6c335653428fe329df4eed9115cdf8660a9e28103496f0c503a9e1900471c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DKMFA1500602.
Soul Sound System b/w Freedom Is Not for Free
Soul Sound System / Freedom is Not for Free
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c1397e641a698c0bb7c9673f326028c2060ce4f44f5610fe2fb2f1c984cd61. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/DKMFA1700601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2d9ba59cbf328ff2de945e98a3ee6582eb63cf7ec7ade8a3bb0d9c44e34ecd. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/DKMFA1700603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d1fdd93a45a02db686f9559722314b3941a31be4df929af3c1d2d3bfd1a2f7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DKMFA1700605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa99e6b529f3bfd109b47c2733ba5379bbb50b895f89094251b09cadeefec016. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/DKMFA1700607.
Let Me Put My Love into You B/W Let There Be Rock
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3a8eb46f3d61ed2be1e258a283d9f93acaa06c6fff69156e4aace0de2b3183. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DKMFA1900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b62bc6a8664ee7b6b1ffa99925da1b152dd501251cc9d5669a0d584efc37ac8. 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/DKMFA1900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448e0318cdda35e8ac34d872a40c763099c1c30b1ba6c7006f08957d26038659. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DKMFA2200203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8de4356d3a4a57bc60158757dfeb3ab107a710a48c665235c4b49bce05cbf1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DKMFA2200204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7770332b658d13b300229e8344e9e293dfcd8219edff154fe7594af93817bc73. 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/DKMFA2200210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a15a54474b1a24be5f6e046b596b34808be7bcecbbffd104b56c21fbd972272. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DKMFA2500114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58d1bd864d54aa8ce227f058e72c37903a85afa64ef88610078ab371d74f44c. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/DKMFA2500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf061d96bb50ee8e93ea5a6248d745c414f8b551874521986c468c8305e9c42e. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/DKMFA2500116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d36a6f7beee3a49d14e307e71799009d3aed7b93dc7a5da46d02494807717d. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DKMFA2500113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28995afa54e2f77cdd730b655dc32169697fec91017513f8ccf8714e07092451. 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/DKMFA2500401.
Pick It Up (Lay It Down) [Whammy Session]