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 0x61ad50a55d70fcf10fc1fd1f94f4dbbbd44651d7b1098c0dbd4b71b043207549. 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/145d8587-db1a-4e36-8362-2cccbd9078ff.json and https://artists.proofprofile.net/proofs/artist/145d8587-db1a-4e36-8362-2cccbd9078ff.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 0x5d8aaf6349ef728db9511bce19e80c7f3ce218db380a4dd5c3b8d476ce1a66ec. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:47:53Z), 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/FR2X41773836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7265108a6611c86339e2fb64f9118feeeb886679024cff6c299a6eb35bad07. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR2X41773837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a19acadaa0ed03008c5608be5deb7aabe3bab4edd831955d85482f330f9830. 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/FR2X41773838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963e471aec31b36c162b1d2b360b8b3159efb81d9e79e5b4d7a61280dffbc40d. 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/ATR981164335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bbadfea443981f33c323e5e1ca0a79ac98ef5e6f0e0b1246b2bb3ab7150ccf. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ATR981164336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbf6dc4d0bc2551c66708fdb43c7e7fb3b235cd5428674090ce85a6bcb7ee64. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR10S1740043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344f4e47b88be350f7d96d2bd3fa9652c973232a0f56c217a8e9f20445bb4843. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR10S1740044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9611f182f0364bca277e4c1e2324579b9159ab00295fa8fa34bbd8af8e0ff636. 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/FRX201624266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6871faca289be0d0fc1af3fb6eca354bdb06a11fa269457a3b9be348a8842aaa. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/FRX201624267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9037838f5f5665db033241fb596507db2b2ca694b702d698c9a0b6fde2de94. 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/FRX201624268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed67ffdee8ddb2b4b571932806bde2d288723178b174d17bc9519afc917e9b2. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FR96X1722831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be9c77f9780994842fa1af7d5e7a611da0a817ce02973f7dbafbd49b93b4b86. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR96X1722833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4884d94ed3265280cf6a624126acdb919fe0403ca82e8433fc9002885ebe0802. 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/FR96X1722834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cf99f4cfdd4f7f729565293e5c7150583dd19f4ba6b40ab0b15b6f526cb19e. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/FR2X41789617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1383d497cb6b9b8e7547a1976791eee1dbd70750b6c2c0968537d9bfe1310e. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/FR2X41789618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcae430dba80ffc9c1ea42966a7e0130e3cde2adef0f188a37429ee77afcb842. 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/FR2X41789619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee52137af4df3fbc9a548e499d01925bf04b79c1f1163fcad42b9923940fcee6. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/FR2X41789620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b920aed5dfa80baf73c0bcb5ad07500a2b82e319ed8898670419c679caba71. 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/FR2X41789621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4b2396237f502754eba9039f872b0641ce7039acd8db1d32fb104c97dc0812. 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/FR2X41789622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0cb0715098bab3048158c7ce4f8558f74a82add0a0753fe3c91975e37ffe93. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR10S1715622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e007eea225b10174b2ee424651ad46c67e9be0b5942a8c8ea505bbe29045df. 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/FR10S1715625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b2e04c9d1efa8a7c3bea826b6e5316a51bd3042322e8bb9ab2e369e7bf1071. 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/FRX201639024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062de8ca3105b468893b4d0533544d59f47f45c2aa1a77537f86b1e793e0ca62. 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/FRX201639025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbce5537e52e3878d3a766d206f03de385242e34880e34ff1cf09558c03356a. 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/DEAR42597220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8580dfd978f10991b0f44d6b8cf935cc11e6c82f5b9ff4ebe60209e26bdae18. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBLPF2509548.