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 0x0badab3e7b7e4f0762b0ff40361b9dfb1fd122d23dcec52e495e246d46872fe1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b07fd1f7-eea1-4b62-94c7-c9b38a3ee97d.json and https://artists.proofprofile.net/proofs/artist/b07fd1f7-eea1-4b62-94c7-c9b38a3ee97d.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 0x2a9f12b0f10ccfe1fadbc09a32daaf3f01bba9d30f5696fe24fdfc943f3f9d15. 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/QZTPX2299019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd66a1057b61bf405b7a7a9b276ba4c590182eec1f2740c4037c5ae41012423. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZ5AB2289372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ee3d44771e362f785736b21645cd32455f0612f07415050fe83411918329e5. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZNJW2183094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8487b192c01568a6b5d1794544d7042fb030123ca2d14e7934ed64528daaaa6d. 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/QZ5AB2289375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569492c918fd59b31e18ae89f1facd95fa0df448de94bcef6bb72c88c9bab919. 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/QZ5AB2289376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8fbfd2a6d5650242c11d2e22c49dacd32fcc7bb51f8d9c5f4060cfbfa03a3b. 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/QZ5AB2289379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c79cbfff8256c74fb61abe2b5b5e95527003ca50a99d794d09ba94501c5f973. 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/QZNJY2236319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ee3d44771e362f785736b21645cd32455f0612f07415050fe83411918329e5. 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/QZNJW2183094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6c9e986cb9bf0831cf337ab0c72aab5979f0e83415e4c95ac6ac0485165160. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZGLS2187718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160f729fc24742b698517630e6669f1efa852650bc7ebc3c59698e5fdabfcb5c. 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/QZMZ92469056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3dd42868a0ecd4d4a239bbb43af6801d153eb273d55acb7f3195551c9573a09. 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/QZMZ92469057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c9d96f267bda0845d1cfe5919b6aba2a0b6770d3f7fbe0839022f6529c637e. 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/QZW9L2320748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2322c331618824034bf48b8edfaceec47acfea808a603bba02759d0cc54ece4a. 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/QZW9L2320756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75a45a8d1403132b18b237bbc0e6ebca87496f674a1a3dbf7f3067d4c581a71. 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/QZMZ92469059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cc4a537a5a42390f2efe5f2368b7e9076a18f0d529fc1369661ac9a693a208. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:53:26Z), 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/QZMZ92469058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8e4f7cf010f6a6c336c502d10643414f2d9247445845a7c40d4fc67fe38e28. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZMZ92469060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ccdadf1ad94bdc4d884a7a9b282bfb08aebb87a19f66dd578a1c42a074262d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UKXN22483988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b92cf1e98121dbd1c889bc30fe6892f066562c8181b3c757edaddb9f8c1431. 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/GX3Q92466643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a15d241976ade2b91b54caa19f9f0f94813743e723ae095b127c235a1f813f. 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/GX3Q92415253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f227722efff8f3b03d99577be45ca147cc2ce55f40dea7a20ce9875a1bab8a1. 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/QZTPX2327050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf373426737e127803c7dd84defbd3b5c1f1e36ff618426f0a5daf503b3d8c5a3. 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/QZGLS2309631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d66090bf30ae89276e858ffaa8856acd7feaad91a7b0528c883612692f9fa7. 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/US7VG2334714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55634c45744c538a217bb413af84526b4e1bb3e4e73ccd851b1aa0dd40847a94. 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/QZW9N2206045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe883b1e4c4565c8de50426d3fbc6af8fca6ee83df6a59869eb8f258b903b5897. 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/QZW9L2280045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6555410b115fd1f2668d5a6c810ba3936dc4decf1049186a3a810084b5d437. 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/QZHZ32006831.