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 0x18990af2b5a991b8a9c1973b4e92229b4ca14cc3b0113e0ed3bbbca09611f994. 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/53720ae2-3dd0-45d6-9fe1-b0e1b74989d0.json and https://artists.proofprofile.net/proofs/artist/53720ae2-3dd0-45d6-9fe1-b0e1b74989d0.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 0x876d6bfc455c1e7a036b733c21026295e0c146cae28a85ed352af0a631999d2d. 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/US2U60604002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1787efc5e4b23eec35c94ad813a147d9acef9f81193a5cdecc74e3445ff484. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/US2U60604003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcef1e41459e6949d7ca17c5c19431923b393c0ff4b166aed8044911ac3e3d0e. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/US2U60404209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdd338355544262a15b533e05bf6b41f36db9726120b76a14bba3ba1656d28c. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USEP41506002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eba97080a79059c6829814561321308daac25fd797e5be21eb6346c1bfd5498. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/USEP41506004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bde8b21502feb083ad09fb3f27b4236b19d1afa929c9b605051a223982f39c1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USEP41506005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6509490ec3cd404f4499fa8556de275f7240025e1870dd2cf5d8acfd5be1e3. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/USEP41506006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3531d81129404ebf7e92ed819909c0f71d0f755360c930f7942771c69ffe8753. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USEP41506007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a1b5456590564cf8235107f874c0175a89249d641aefadd9c53e172d5e1be2. 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/USEP41506008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08aba5ac7c055cf659ecf929eb28651aca98b99d66d75f971b831eae5f9a52f9. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USEP41506009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe820426be35b4920ce8f51039299784f130d571eb6fbac3997e84f6e178b51a7. 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/USEP41506010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62058ca77ff99fd5603f5c09e160ff4c5d45fc04a84f7cb805a8d60c155de0d8. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USEP41506011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa485f7d5c1cf090304a2959fc5ae799ef2b33391c5b56d4a2fea96b236813bba. 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/USEP41506012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5520ebd356d24cd53d325a7fff4600a6af2c798325b5f286e96d6435152cc9. 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/USEP41506014.
The Left is Right (Live at Shea Stadium)
Read Music/Speak Spanish (Deluxe Edition) [Remastered]
Man And Wife, The Former (Financial Planning)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f1020ee474f2140018f87e9dd70eb94595c9758d34d9e0d39b7f3935f0168a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US2U62134201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0d36222021697b96a4924a98f316002f4a232846c370953229c2016c56dfff. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/US2U62134202.
Man And Wife, The Latter (Damaged Goods)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9a8bfceb6880c11b94d592d7dbcf0121397fc879d070b51ba41dc524bbf490. 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/US2U62134204.