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 0xf40c0e65cfd098837f21876efb2ed804be8a6d2dd91e11c12286f52a57aaed47. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c84b786b-723c-4bfb-90f2-61876acf708e.json and https://artists.proofprofile.net/proofs/artist/c84b786b-723c-4bfb-90f2-61876acf708e.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 0x522f460e4c8acaa230a786e9c616f00961ae41eabb2a4c7877bd671b641018d9. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USACX1900713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc276d63ddd81806cb50a5572632d03f09066d2b684c6fe9089d26924bf93974e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USACX2000750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8158711d6e184ef4f7345361a9f6d9296484d8d1fd316c285a3207efa7846132. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USACX2002124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9adb485d1488049fe107db2a5a6bdf13a482b3c56c145345ca9dbd47ea2dde72. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USACX1800353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6682d560795f837181b4e7c99b047fed7a5ed877b3e7a01320f5e3765aa64eae. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USDHM1424312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225cffb7166383026e870baa574ed542d5c0ca3ba7afc0743b6d7b33d9f6173f. 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/USACX1700749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5356d2b09fff9e3d7b89359ac6a31633058beb215bc15ed422173b28e1ce7801. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USACX1700750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ba96d653761c7354f6503ad31647427521ee30a13c981f095caa61ee7f7811. 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/USACX1800355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176fc61ec869d3bf2a960ef2c2d5c9b277cbbfc51bca4e23eb0d254c20efa43f. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/USACX1800357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba245bdde83b17ceff5532bfdb7e7b08ce958303ffc4b18f5db38a9f142508f4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USACX1800358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7b326d526af480ced1999ba2254b39e59ee4dc93a6ddae1c9547a5a8830faa. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USACX1800360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71de93dad25fceddcd38274a30eaeee450e82e336c2443d723a0d846434d6b71. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USACX2400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234a27edbe82d89c6ded9043d09bfd4d777996cc227f0d04adbc1445932dc4e2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USACX2300160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce022426a7c4e8ab0695ae59ccf656db063063d9c56abc975260c7a0a45b19bd. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USACX2300396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe990ef997351d699c0eb99617655049799978f09ce52d2c9f46e14d5d6247b6a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USACX2300421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621d78fd433ef8560989027a23c8f2576dd5de37ed1a114b08c637313f497af1. 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/USACX2300422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474ffabcafaef2158cd40ed0a292bc462513e5c1ada2bc301e27888b2ed21401. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USACX2300357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8b1e1779a55f858754a722ec8e7095f3ba1b160a220685b9c116e67fb150ef. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USACX2200491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a181a0fd82c415d08ff15bbb3f676a5196e91b6fec27171e0ed02a9d6012af. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USACX2100781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc276d63ddd81806cb50a5572632d03f09066d2b684c6fe9089d26924bf93974e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USACX2000750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac832cde1eeb22391611ac8befc63f09493a5b1f557239a9767bfdab81562e57. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USACX2000973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3712dc4fd2036d4f06dcc42c812a0b33997a8455ac8c652c4c32f1c364c5696. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USACX2000976.