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 0x70e9b300e60d17354a40a6501c45760cb1b12afcfd5d41a42cdbc69611c853eb. 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/52ecf733-0a3d-4254-8762-a6fb460e4d96.json and https://artists.proofprofile.net/proofs/artist/52ecf733-0a3d-4254-8762-a6fb460e4d96.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 0x9cf822236f73a87f9c90cb464102f07a58084f50ac34255c6cc31b2cd5359f0d. 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/DGA0H2481085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94cbe5f4de1dad744b8d6095463e5f26d6f78bc64e11bb1cb809f0bc84898be. 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/DGA0H2481086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c065eb3b31e79d61709697aafbcc57aceae7e0215d37302ec737f62337ae91. 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/DGA052447025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c08ee2e96107f1dce64ce7c93637edcd30e09cf17c3537b3375f7cba074a9d6. 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/FRX282425105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bf63927c703b73102642d940ff607187527067e156be1e192eb5494d5ac065. 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/FRX282425106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cdfb002fb9640da59c28bdcc81e31e1750164acd1f2969687e4d437f3601ffe. 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/FR59R2442211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02842307faf6cf05d1e11e87efe67f1990eb3277461eddf51ea7968600ab4f9e. 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/DGA0M2372219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590e366a018f324cc12fa2aa30e186f2cdbaca2dd2f42d498c9d39702daf5a06. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA0M2372220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6710cce6325ce6b4c2609d206c21653fe5475b541193b561c5a6a0e8fba3514. 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/DGA072318188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fbe36b91e77b33538502446188ce8425b05f1282cea75d69e9601c45f33d96. 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/DGA0M2372221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ed059f23b7870cde971e2220c809129a7175040b65563fe499f79ba5f1f82f. 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/DGA0M2372222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067ce19d1cc9beb8f1b1bcce54bc113ab73dc9ddcc6076814a64ae02cba1ca63. 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/DGA0M2372223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eab25caaba997c668f96865face39b8e8547ed247c30bbbf6ae6c64c8baf0f9. 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/DGA092372366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eab25caaba997c668f96865face39b8e8547ed247c30bbbf6ae6c64c8baf0f9. 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/DGA092372366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6710cce6325ce6b4c2609d206c21653fe5475b541193b561c5a6a0e8fba3514. 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/DGA072318188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe94bfb07c82f8971b36932992f4f7ea5587f7d03a8ac68f7c39f24ad1368ccf. 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/FRX762371284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5f80403b25d5bf1c728f44224dd4d2cc7fc821a33d49c9d019049a2303f04c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR2X42378429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce521bd563e48bd75212563f500dfc5a6fec2b4d99d670f5311ff0fcbb83cdd7. 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/FR2X42378430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78a65f0ad623100f731a04b8bf52ce6d7ea30232c3b8139674a441f20011055. 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/DGA062213266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e43c9f6cba1b308b6778b2b92a1f26d3bfca2e18081689ec69e04d006facd4. 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/FRX282290872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7387e93f315f450564ac6544ae5358dc6263a66936de19524da8ffd175debf4. 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/FR96X2229254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb904fa616e8b650aa9fa20c591c1173b7db07ba9e77215e5584d765ac437aa. 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/FR2X42230081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf10ef826c89778072fa5638baf395d06745427a3fad7d0d22751ea8c6ae9694. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FR96X2229255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd59f0a560db4a5a38db47ef648136c97009f50dc3db0e5f99b4ca61687ce6e1. 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/FR96X2229257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8113ef9a75f384f5f207bc1ac08e0802cb69a6a7fa540496cf12a9dbbfd7f2ae. 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/FR59R2228072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33020749497c2f7add943b2fa146aa591302a34e99262e0106aa01aa12614443. 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/FR96X2229258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8113ef9a75f384f5f207bc1ac08e0802cb69a6a7fa540496cf12a9dbbfd7f2ae. 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/FR59R2228072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb904fa616e8b650aa9fa20c591c1173b7db07ba9e77215e5584d765ac437aa. 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/FR2X42230081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb903f68d5c64c5839d3bf51281a6966f14850f779f9a8d94a6202557889692c8. 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/QZNWQ2168834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec99ea15e8098ef91f438a6183481c6573a4b67848ec845d2bd96958cad7a57. 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/QZK6L2147314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538740a9bc4bdd096a33092d5d044e5090b0d169a3b9510421d5fe84c32dab8a. 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/QZK6Q2107474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847672807161d6a79ec88ab7e81d1264613e80a169e5eb840a7b827103855f5c. 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/QZHN72150606.