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 0xeac9cf235037713bb3ef729afc0b77adfd45425ffe6f7c7aaf00cbb5da6f9b1d. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/721ee0cc-2954-4667-8da7-8ae3c61deea3.json and https://artists.proofprofile.net/proofs/artist/721ee0cc-2954-4667-8da7-8ae3c61deea3.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 0x17251bba52ccea41bd602886367ac7d2168b946e6e700fab0d07b0f4f93dddac. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DESY21400194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056a19d337dee45bc16e3824f854aa78dcc1f92c8d14a57cab607e20c454996e. 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/DESY21400195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb08cfe73e8d6a36a02ad5ea98c9d6b42c3e292637516ba25bcf93107ff34c6. 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/DESY21400196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb41587aed72a726ea5a1d9c0924f61802575ed6e78de1cc9446d5ff9f534e75. 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/DESY21400197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8e3779c9b96a469d0b3b1399823bbdf1d10f9e8bfa325cb6d18d220ba67025. 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/DESY21400198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811733aac5335171916f6fd7594005861512398b2d9d6ec6318c56a8ac09a2a5. 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/DESY21400199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0a8f44e4539a55c7423446aab6c1fccf73fb6b4d5ac3a5dc19c0134e19f352. 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/DESY21400200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f1b8cdee9bf65bcc841a27a86048a2031260e50abbebc0390cf36df41b8c53. 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/DESY21400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8ef52a6f8ec542f051b106afbc71c059a2eb3a834f3be347b9091714c7cf96. 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/DESY21400202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a082a03318380c098d5c736d1d5a634f3f093f4b1b2f52563f2c13af16464f. 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/DESY21400203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287907b23dd74df0ea1f2abec2705ae879e95bf30799ab078fc14c82fe6eab9e. 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/DESY21400204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacea2f8a813ef1a2722460044d303b27c38fd961159c1aecdc3ff15dda24bdf4. 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/DESY21400205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fe04074cea7d90b1a8d92d24e0f19b962d860cd1d782807fcdf297ce1e7846. 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/DESY21400206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0a16d2d4caf5a52d2fa1eaed4b85afc5121091f5f1dbb90ab023dfc40dff72. 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/DESY21400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe04d489d6b3113480d3925058b17af4a0d6916f47b816e475e41af4de761eb3. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/DESY21400209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89847b3934ab90836327bdcce7c1d077feb5998c5827d730b9be50e80de6a2f6. 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/DESY21400210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfb27896b3b3a353c3809211613f3ab0e92356526202211d1889ac94ff129d7. 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/DESY21400212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ca0b1298abb85775bc7819adcb30b1e7b855e02df9b336ee217a3f29864499. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/DESY21400213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb25fefe3955b59e3ca396a1f19e9c66c76b558abb9e2139e34b4cb76583f31. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DESY21400214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533bac46ed804322c57a161759ebe012ccbafd55674aa7bb5fc059812cb872f2. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DESY21400216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb468807251ae495f96d1e6b7cb548c6c794c9f7a3713d3c2596eedea1f11220d. 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/DESY21400217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa513c6fc66d0d7610d6fb68e337d3ad60ba5557b63078ac68c30f6a1605ef1. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/DESY21400218.