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 0xaec8e8d7e12daddefe18c3bf008467ceb9e872141d8649b3b9af94bf1a080548. 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/348ddb12-63cd-47d4-8171-405f0879ef72.json and https://artists.proofprofile.net/proofs/artist/348ddb12-63cd-47d4-8171-405f0879ef72.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 0x57e21f6c6ff72b34e8682fc48053bf890cb77098896e5562acb77b7915a8de72. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/NLHR22200254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0965422773010075291522d48097c2e92c9e82fe6eb413109eefa90038abcfd. 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/NLHR22200256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed17199222a8b2c29dd3093bbb62afe12ca63be9ffb4da119266510b980fb967. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/NLHR22200258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1d16d9740ea834f1dfef7e5a7c7f4977a7e420a688f709140ba54dc9363f0f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CA5KR2261750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34dc45c64a75149bf7ec1dbb528febe2617437858cc5941657f159b844f7bbb. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/GBKQU2317000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebd4d6d7de1b910a62ff8d5ddbcf0fa56bbd89a35a9bfab0996c445c8ca1783. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GBKQU2380945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdf40fdea15fe0fc1960b15ef5e126c234e482823be12bbf3c02e128856f109. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:38:18Z), 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/GBKQU2380946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdbc75f529468f55a7217419c5060323c957608357e841e650b73813d10ee63. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAHP2355730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebe9bbc3aa8004ab5da54b44610752bd7b8ccefaef1ae948a3dcfb3d36a6323. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:00:42Z), 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/FRX452425234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf914568f1da32e54207c7e76e2ba3bca589c233e41fb1a2fde261dda54e540f3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEY472475663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc464a4f08d2909dcb11cbcd07dbb72d847a62ffed77be4da252745f11635de3d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:43:29Z), 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/GBUR62000908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe1e24e704c2de54cc19ab2130c3c903a1ffc4f7451b15fd1062e94d60766c9. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/GBKQU2516004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb022a9db587557fa201b4bbb75e55e1e46ecc66cc885b3b614565e94cb82606b. 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/GBKQU2514409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa55eca57b0607053b6bcc9d5003824db664677152f5fab9825a901a09236810. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/GXBNP2504290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804fe48229f6fa7d7f6ca62eda2202b640ea0ef99e018a85f8384018c13ef71c. 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/QM6P42519292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89403c9baf4fcb8e87c5a1235af2266310f52de5a4be38531be0d0f9f347367. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITFGO2300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89403c9baf4fcb8e87c5a1235af2266310f52de5a4be38531be0d0f9f347367. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/ITFGO2300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c547c12579ed4fecb9186a0097677fcc8febc1edf3d16594733306599cb82f7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITSDR2200341.