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 0x2d59707c1d31eacfa0224a4c4520d6aa547c65e6d0d8f2ffa0a637a92b241c65. 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/d016c510-fed1-40ab-99f9-e2046e4bdc1c.json and https://artists.proofprofile.net/proofs/artist/d016c510-fed1-40ab-99f9-e2046e4bdc1c.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 0x168a5d3a856089eee14d85bd9f459fc4f0d4fdd4e19d4e1765e7f09dfeb35d4f. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/DELJ81474542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9a8aa168b119fa45c18fb571d6218d8bbde5140108edb4c2521a49e47e32bd. 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/DELJ81474541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd0c98241cd4e7c6f5437e0fa42f0b2c66b92e9a28a031b271bfda42cd2d5fb. 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/DELJ81474566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8064eadefb2b970ce333210564500b94d81847120e5d7d45d3e0b3b0edb52e80. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:37:11Z), 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/DELJ81483013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239b2803d8a50e68217c86684c3fc3b1d3420b51c18b52a2efd05fb94ff5acee. 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/DELJ81591017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14aea0bff744957bb6cda8c06e36d4f1b7643c496a49de21fd9f280fc31b9942. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T03:47:39Z), 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/DELJ81500960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc233cd3be498defae9b339f76fe52cf69c569f1fc983adb0f5171ea6bfc5a566. 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/DELJ81512082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7379487b4a2786da261bf89cf764e5e20de6a34058b5f1c9e5d3e224102db17. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:27:21Z), 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/DELJ81512083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d36b2cd4252ab7a031967631d1b02a0b90a662ec0406f893ed85657db96356c. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/DELJ81512084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d5453e469d2d6e6487cdd3317214c15f29fbb0fffa64f111d10d961fef40ef. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/DELJ81512085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe905b91effb6ef7a1b8a54c1853ad6a6db0797deb296724c965aeff2730e2cd5. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/DELJ81512087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fdb244c4cf4c204a023b3b995ffef83b8d5d3af074192cd8b9a5f2505f1bcbb. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:26:02Z), 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/DELJ81512089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83de4f60309246a3b3185f723eaab9fca0395c6bee793f27be397ff1f9d7487. 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/DELJ81512091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ff4a4c0b2b218a5a3d59f7da4065a6c8bf3372bf271e86bf9757ae150b3efb. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:21:22Z), 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/DELJ81512094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8205e648e1bebcbdf3882cb341d9662b29079c3be044d8ce351ba8afd9cd7e8. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/DELJ81512096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9d2f4ca8d3e185625c1904e0c9d44e1077f5144d19558b4fad8d5f93b853be. 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/DELJ81512097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d08ac81b09f261c903c5eaf86ee24d09e78a61f5beb7e1fe81e6929164cf0d. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:43:03Z), 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/DELJ81607325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd6270d857582bb7b54691f522a5e57ad664b28fe882b19d74ee0fc46d0c14d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DELJ81732484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf719388c4feb0bd44a7a769dd300e54d165dd3da7b894880f0a57f52e20c7cea. 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/DELJ81732486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9527a133c9a934a9d056ecbb37e768a1ebd0254d6ff40075d89dcfb444e6681. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/DELJ81732489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aedeb49c5c348a168eacddd7962383a24686d7867f34857da045ed7c13548e5. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:07:50Z), 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/DELJ81912615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9910c9a6e7bb4e805aae7ea668a60778e7ac2a520893a7942e71ef91d3c8ab0d. 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/DELJ81912618.