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 0xc56f70b658ad79f9d23c41734b85e269e2555bfa2510559b01aa2525820055df. 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/f4a63c5a-2f9f-4355-bf3c-ea8ba87dbcb0.json and https://artists.proofprofile.net/proofs/artist/f4a63c5a-2f9f-4355-bf3c-ea8ba87dbcb0.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 0x5d31b8c811056a728e07288aaa9c0d91bc8600ef85055e4789cf567f5364d07b. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:23:45Z), 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/SE6XY2264524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b215096a415963e52746d086af47385ea80fc5c49d6e7d2881080906e54846. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SE6XY2264525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8df4c709a220ce25f414d58f5152777f5caf6a9441e88e22257791cb381ed9. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/SE6XY2264526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29df33e7ea8446192de0adff2ecee34592421746d16b1e8c76cea6f36a86d324. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/SE6XY2264527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b849a89fdb8d16311eb7f166c958cc63c6a80e0eabc24c9864ec93bd7c36c45. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/SE6XX2258581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a57b33c5d6aa7d97f25e41c8367fc4e47397a92338a93753e6a6b271b05fa0. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/SE6XX2258583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43cd23aa6bb31dfe3b837e4b213279f7da7ccb351fffc0670d570348f6d99e5. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/SE6XX2258585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afb2c6fec17f6504b3c2c1ded66f359237acf2662eff1fd83d219e192c98669. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/SE6XY2244393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9eb10be4df0401c8230979db65af2829617810f31345880fddce2c72efe05df. 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/SE6XY2244396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023fd68ee5c570a2e0518b4ea84a80b29387ddbeb641d59c7e4a697c5844eacf. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/SE6XY2244397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce530dcb70feabe1a210406eefe7afbaa102805d9fc5278b8fe260292d5d893. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/SE6XY2253039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63241fb38c850a1941d6fbdca67cdf0f89c879befe4b0c5336fa00265eb26776. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/SE6XX2255760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8894167e74fd696c4cdb260684d690f9a2674bad54e53efa71b0503c07e8355. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:02:44Z), 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/SE6XY2252922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac766af62f45ee006950c93f5369fa4a2d104dbe7e7782b2859f0e86a8cf68a0. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/SE6XY2252923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335e80a984098909086afec5eb5fbe1873f986ad2714a39ab17791b88b7b7a74. 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/SE6XY2252924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a61aa608f54807ee5747d5e46908d583f25dcb1f844f4904709c83d506bc638. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/SE6XY2252926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68eab52e13cfa28ce7eebeebf08d92f68dcc8c6a6a05c3529231112fe2e7b097. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:01:01Z), 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/SE6XY2252850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420edbaf308e33edaf115784590e5d4cc679a21e7eab93a64881fcad965d0e7f. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/SE6XY2252853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98443485d8ab03373d43d376b2c806ac15cd090b22b949d6ef07bb13b13c8a4. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:38:48Z), 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/SE6XY2252855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4367d376691b50de868970d8cad9a1c431ac61a71d6201a50311003fe7b812a7. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/SE6XY2288719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bba089d896a6faab4f0a3b9ad7d5ad29729eb489d3b2f6ed4392e82f872463. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/SE6TI2361527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7afccb12bf08b0efc26ebe6712c0c6fe2c2be120250b8f0d678a78b4a9b19b. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/SE6HN2466277.