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 0xb2d2047ab5ab8427254624274541251c81589d4444df04be94acf6e39cfb17ea. 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/9bfebbee-1a8c-4217-b378-fd76c97118d8.json and https://artists.proofprofile.net/proofs/artist/9bfebbee-1a8c-4217-b378-fd76c97118d8.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 0xb65f8e5e0dbf322739aae25a07243e33ffce88c4aa5452706645ee9ae4bd0952. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GRL011000161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ec90f8016d85079efe6de98788b4988fffbcab290412ea7d1b59edc0afcb4b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:58:21Z), 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/GRL011000162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef28ec70ed20a0da36a07d3ab0683a41950dda44ae18e8e1db6ca20b9f76528. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GRL011000163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123cf818bc182ca716d7e68c93feeaf40d7da5bd40774fb99555cbbd753b5948. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:02:09Z), 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/GRL011000173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc31a3c7268fb12e02cd95ffdabb231451f8d106cf6815bbb63cf4503ab5c41. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:27:24Z), 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/GRFSB2000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74748013a7c2f9025e204c3fa6990fd56e9681f957f667173766de6aff94a14e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GRFSB2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4edddcd5dfe182a722e5757b9706a477d2d94d8360810ffaf59a0bf880813b7. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/GRFSB2000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8cb07ad37e3e6fb89a1f7dd11d45f1d4cd528773b34083c38cf74d5e22eac6. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/FR10S1878459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b7d17d18b043c3455fecd533cc2b3474b18ffa77d3dd52a8960dfceb56535a. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FR10S1911669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783ec10d6529b8462eedb6438e8d0f81a22761490d91c93b34e7f7887b16a23e. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/GRFSB1900049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6902c6dc8105b8acb6e7fcff1ce21e49690ac78819f14dca3ab0734d6a64354. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:54:40Z), 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/GRFSB1900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53222018672b48e138964cb5479081f84edc6f298d65fd21622d2e6a9bf13038. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GRFSB1900052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa82ec127578625e5baa1d6602dcdde291bf78e04b97a2499227cfccf0210f0f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GRFSB1900053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde9cd69b38399e2e2e2eb0bf36fb43a22118f503501f1c6a3c80ac4d3547cdf. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/GRFSB1900057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f2af4de54586150668862ef0d999487d0a81695dd8bb2758d2efb9b7b9d7c1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GRFSB1900058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5332d9b20e712a1589e3c8def073f194f90750affcd53b916d30c3dd1d50a0. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:34:52Z), 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/GRFSB1900059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9754488445e76fa4088ab8368af94664a602a19696cda8da4d8cd305b2fe12a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GRFSB2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33238eabceb76d9f72105d1b3f2c9a1c23285cc90e8b3c445030a3fc948d1852. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GRFSB2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a08e8eeca5bcd565a798bbc1079ba7704d250eefd2f1402b30fd8efd7f20f9f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GRFSB2100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3f9b0c7a82f14591747414b7b1d0f5ce7d582531c189d819f4fcfeef643ffb. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GRFSB2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf98952f36b9aba3e9ec988d66cc89b53947e05efa1fff4d0cef3500e0dc6d46. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GRFSB2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38073a29f55a3fe90e133d5eaba5c14f92cae49fe3aa8474b92fc8052b35ab5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GRFSB2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41219c784de96eec2d15abb1115083c2562e3c9ff316c6cb2759e517a55cf6f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GRFSB2400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b7098452342feb9d95d70cc5e21e433ebd522aa3f32cc2ad7169124eebacb8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GRFSB2400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4616789503498c4eec2a982c3ba6d8b5640ab9f41466a443b4ca385e4a4f1d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GRFSB2400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dea6c3c675781a541b618122f55b5ad780caae96858730d8b2935a9a0d718cb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GRFSB2400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ee9e0a2c5d240357c31617fd70c8d585ae2e562ee50a827316e81a8036bba8. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:44:34Z), 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/GRFSB2400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5189020411f96a78b5977189abe0069b591a0cf7fd38ca830401767fafe312df. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:39:41Z), 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/GRFSB2400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e41976c0d4ba48ed428f2d3cb40979e14d50f899145464b2cc6b828afb610d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GRFSB2400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68aa99a9af77d776e9e4bfba031d7018c1b4805104674d214e3b2f09424984f8. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/GRFSB2400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ebdf3f3ca9a69ca74675b384f80c690dc2e76297b044ce163748cecd5b4b98. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GRFSB2400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b866b8bee7bfad7a0f986f58b2cf3a0c3fec68c978e88afb96835c4e886594. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/GRFSB2400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423dd2a94d7bf5f25b47d154caf985b4e0079e5c2050015c49388cb837c71551. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GRFSB2400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bde4029ad1d368e2e33a26024e5822b54bae7cdcfd371ef8bdb9b24d0839450. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GRFSB2400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00f4d4360bfdf016797ce341b1cf3b3054ea805f3bb609bdd74700ec03374bf. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:33:15Z), 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/GRFSB2400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a251ee5f45053bfaa7fc1f72ab0a28fea85a54780cc496bd0244c7892e9ee49. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GRFSB2400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c69fa5b620cbdfbfaa5c2e9beaef1c7452055bc7c3baf2606249aad25f250b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GRFSB2400064.