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 0x1144acc79c0ead2103eb22a6d90000237327f5ce9dfc56ff054293a8d4af3725. 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/14679ece-6cd8-4ee1-b109-2176cb6dd75e.json and https://artists.proofprofile.net/proofs/artist/14679ece-6cd8-4ee1-b109-2176cb6dd75e.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 0xa7fca344b15ba64902228b84f385beacf8c9dfa765e1b0ce75bca57f870865ec. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SE6A92098693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf199c2dc80b81718338ef741145d00372eab3b8d091654c346b8efc7d7505675. 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/ARNFK2037828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e664e687b755baabc88fb254e7d144e6cae4b1e59db9adfcdfb5bd53edb451. 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/ARNFK2036625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33f51bb32c5e661eaa312ad6973a3fefbcfe1042f79eb7d34ddf980aaf33430. 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/ARNFK2086857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd0fa16f65d3d6bc6e45b86f3effba59649c0ac00cbb60cd41d22457dab272d. 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/ARNFK2056877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53dac1cdc0e2faeddec48cee4aaba4513e9278396cd44e13efde75b9db84340. 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/QMFME2127152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe0716c84a5385e0376943393d0348577472d60c2bde0d4acd0b68344eeff0f. 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/QMFME2127161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcbd3951d6056ee2e8ba5ef9d8f614899453f72e0ad42498bbba9b30616503b. 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/QMFME2127162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35d54cdc1d915a028ac4af17722967e122317241056853108eb19fbb9c82b04. 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/QMFME2127163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b33d31d4526cec7d5ce34ab00ea9bbac0836c2ccab595bcf899bec5784386f. 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/ARNFK2094579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd0fa16f65d3d6bc6e45b86f3effba59649c0ac00cbb60cd41d22457dab272d. 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/ARNFK2056877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d02f649c8dcb696b54d8c005bc3af05c3a11aeb030dce749288cddb94b79e2. 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/QMFME2127164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00fcdf5da3aca4780f431dbcb398107312e70da03fe9610c2c9211db0077bfa. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QMDA62145721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50983eb9e5ba4303a4045a7f3a8b0d2ff62777945ce507328ec637025f141503. 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/QM4TW2281253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ec2d56bcce73ea11a61b664fbe0562ba51e2cbbfdb9113c4db131d7c781fdc. 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/QM4TX2292124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31189c9679d1c53729741560e261bc8ba2c8e25dc0ea06aacd5a2121b32fc6de. 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/QM6N22233338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57ba988f90a2f6b8bfa36501ff9cfbb20f327c2873ce0c8ed5ebd413e735b54. 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/QMBZ92274177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4295df201f80738d741eb1b8c86ac80b6c9ae369d05b6266420f11b4c73982dd. 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/QMFME2278757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b9446fcf4c82b99414d68eb815c257cdb8968e05aabab6d53dc82d498cd218. 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/QMFME2278758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49eb8e1b5ab3a7989d9f1075012b193365e9d5ee20af2bfa9efcb7422dadffd3. 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/QMFME2278759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d7b82df51de97ae9e942a323c0f60b8015eeeee6c1d3a0708b06d640c36af9. 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/QMFME2278761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2a858a9b56ea1cd768d11fc7583ceb1c3c2f9a6f0a3ab7fc20500e9f4d90cd. 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/QMFME2278762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7348eec162a1f977bf622f64041e80228d2ee2518a0eb4841971760410cad5b. 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/QMFME2278763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470535ff6e55d907b6d5b73e21f75bd4999935429c210511cc8b3df0055cc390. 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/QMFME2278765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3405249fc22d1c023d70cd5b7ea47ca53095112d760815c6942c193348c3fea8. 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/QMFME2278784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacea875f3c4292971e5f3835d0db23def72c607a24f930b4e09831f7be2a6e9a. 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/QMFME2278767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bd5396aca68bc2dac53141f2b71f545a3e801fcb051cf11a32bb6511146408. 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/QM6N22328299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1d8c5ee224766aafcb531728aceb79e55034ce2ec98bb9ac8aa46f6413c3f6. 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/ARNFK2057864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bfc61f686f3a8715255f356d318feb174f0598b979d6583141f8a3b426f8740. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:06:13Z), 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/AR6PM2400208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddf3db02307c0874fdf4f3f49287ae0709fd91a6374868ee73fe9f9c1b76c80. 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/AR6PM2400206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9062a09299254f704bdc337a4098fe8856a06eb3f3dd5b09508c68a8561c420d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/AR6PM2400209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc8b527fe47fca331845abfb6c018a2e4e58a88155ddf059437f1103d501737. 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/AR6PM2400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ac90102fe36e3b6f84f21dabea243fa64f2a25a1ac951564a23f03e95494dd. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/AR6PM2400210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfd6e17eeb437283eb3f194fcf6ca3fd692e3db76d2e7db245d07a275a2af7c. 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/QZ2J21507737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ccbdc2c2d8a5ddb433551b5dd6019638961f1dba93fa0bd42fdaa4c5c2b433. 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/QMFMG2330443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5979444c1661687ff3fd44d9d9bce55ef359fa157e85f256f2cd5bd855414403. 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/GBRKQ2449001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2742a4f3aacb384284dc95dd2331192e8af01587b20fda17ce118844b221e9ce. 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/GBRKQ2449004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69e5c35eeddd6b2fd9a36867f80783990f0ed1f48d91f4cee427d85be1c62f2. 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/QZZ8B2310515.