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 0x6f04e94894f9ab896e1689fdc08aa62a69f254a43725715e183f75037f9972f0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a5d274d-0d48-43b7-ac7d-542155e24d95.json and https://artists.proofprofile.net/proofs/artist/6a5d274d-0d48-43b7-ac7d-542155e24d95.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 0x2f7587e439f655f2639cb735d8e916103b9022adbbb850f10e4f2df23bd25bea. 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/RUA0G1900385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8ce7cb82f7f39ca022b5d46d67fa9898dc04af1071c49da5ba940f5f97aca5. 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/RUA0G1900386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba8dfda7b88f4a26f8e75709d7cee807c19cf10b91f20c3814d3056481c7cf2. 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/RUA0G1900388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f2ea1dc4e2c63dc05f9ba23b853b32fcc9009d3864b001583424c5c9cefd77. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:50:09Z), 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/RUA0G1900391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f02a593bc989a887037676d160aeb324c1e1dce08d7711426b7c7a36fc31e9b. 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/RUA0G1900393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04aa59b6c9318bf54289936349c0d21cc617f1b6defcf608980919a620b6b740. 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/RUA0G1900397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd06508eadaf4f6e0a8b466f28f40263af995ec3d764dd1e6a598caa5123b2b. 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/RUA0G1900398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecf981ecf4502640b430d188c152f5769f8ea22d3f8658ba1f2e67d272360b9. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/RUA0G1900399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acac5042bc636375c69a4cee9a2df96397747ec808ad61f7b85ba698e7014bd. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/RUA0G1900401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc3017a00b29934d2536bcbcae8061b53eb9ff3a7ba0c08e5f23e85c3ec758b. 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/RUA0G1900402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13842d63c513f639dd8d2b814f1f9268376de6ac8ceaec35c9961e62398da4b. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/RUA0G1900404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2323121c8f351ed1473f8e4e07802fc7f33d8df32b4ba5192654178153684a1e. 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/RUA0G1900405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd933a60fa5ff6ada793ee44c4db4b725821f250a27a3e9eeb0264422211a3f8b. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/RUA0G1900407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb79a2c2e3f8e10a4939a5b7f607b73019073d19ccd25787e4f1b50fc3f71f61. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:06:43Z), 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/RUA0G2001449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8a59f0bbcf8a63a21d9e4c258224e5f76cea84b082ea7d3246cb45216bcbd8. 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/RUA0G2001454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6233639a8987cd9ded30a0716f2244cfcbd951c65facc9c0c601804fdb3b49c. 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/RUA0G2001455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8b9eb4adceb8d4df7c443e80d3eae7fdc6f74875263e01ef3d747af3f675c9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/RUA0G2100930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b35da536f44dcfaabdd1652c3cb363e458848961ec16f8896de191db56546c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/RUA0G2100933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114af92de7227e421a9ab2a35d83fd111b72b0980cb6b0d12fa45df2611ca444. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/RUA0G2100921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1837a834211bf5037c293ad24aab3eb1d9a21b9ba017e2b244c1cf007ea03f68. 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/RUA0G2100922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdb3404934dffe6f821f07716a7bc4436e4e7fdad0f68cc863e632b9a41e44f. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/RUA0G2100923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa933223c44926c1201dce9d1a032c4eb035ae7c4c37dae67b286fdc1070449. 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/RUA0G2100924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea042ddc5f9af769065a8922187e559909e0f56e9a7f004c85f3529245bce309. 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/RUA0G2100925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf2c6fc272b14f8533a0a5063b6ffe14d694333993a46e29d51582273ebe878. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/RUA0G2200660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d4348ab167a36d3e959129bfb53c84afc7bf1f1c74b5ac46a9f347c01affa9. 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/RUA0G2200663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1da41812311c1fb8ab56521a4dc4c728d7945cb0f06747ce221f7edfe93a08a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/RUA0G2200664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30918d597884be4b71e6c56acaf905f68b27af9a9ee0f9d13355e9a593395977. 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/RUA0G2200665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d366adf31d6a0fb6441389864b7611629f656ae5febdf4bd3df777921da2800. 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/RUA0G2300187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7826e2e59a6c3e3eb1ab1421f728842ea05fd3d834180e27e86a7a6f368a5b57. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/RUA0G2300188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac5a5b37930c3722b0e85ea58b1bb2155b2f60c7c39afc384b977cf898d986a. 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/RUA0G2400686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a326a4f0b3f452d77cd623ab56b725f5a9720025226d517128f4ea5e5b768c. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/RUA0G2400692.