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 0xfcc39a539d1fea847d8e9fc6d517d46b05744afe7c80a3f67f9daad7aa83427c. 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/1dd80bdd-33b3-4c3c-9655-b11b4585b56a.json and https://artists.proofprofile.net/proofs/artist/1dd80bdd-33b3-4c3c-9655-b11b4585b56a.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 0x35c145745a35cc518f0ee100715e80c32f986c9cca2c013fe4205c3e262a81f8. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:28:17Z), 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/QMG771300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99616c247e9a618d178ee7b18eabc6e214b056a4c713eebeaa035de80129c87c. 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/QMG771300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ae22274badb62b6d9e0842536be7f47e70942c266f1fa029780216f7483f55. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QMG771300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fa3c9a4a8f3d92ce74d11b336e402d57da4c4764f93cde408e9840a929976a. 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/QMG771300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2cffa3b1a1752572a7c81f02e6783156be38866082f871d8b45c33b78824f0. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:43:24Z), 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/QM3MF2000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935edaf061578c81f1df04ff791989381cc0b470a0e406f239497e2bfc6449ae. 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/QM3MF2000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6818097151678fbf72c4c3fc45790f37c164481aa0bbbba7afe19790bbe5c4. 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/QM3MF2000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88af71272b3fa06b8c76ae371d7ba6cc1e1da99b514025e2295978abb50ee675. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:04:33Z), 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/QM3MF2000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97a007f4654459029b3410ff48343ff7eeea79f3a82f06a04848656cd803261. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:50:38Z), 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/QM3MF2000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad23d6bc83b2cf26bc2502c738fbd23cc1a39923074c80836bb05e23e25552c. 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/QM3MF2000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a7834c22788dc8d4fb355034e5eb3cd786c72efa070e3a594b5d55ef911d02. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:27:51Z), 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/QM3MF2000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bca36b5b3f13f48301c34f902acb9c6accc8306898c83063df8a8365695d689. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:08:26Z), 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/QM3MF2000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aac9cf1db976b044406cdb7c3ac6e2a0940549b1c280f31ff729698073ee67d. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QM3MF2000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f89dcc3eab6987390d82d4d18831ce91598318c0165faee084ce520cd78e71. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QM3MF2000015.
Unquiet Grave - the Ultimate Goth Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4bd0cc052607293fbe79ffdeb93ba1278dc3af5b807e88b0a20526773fed6a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA560844568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b38635aa6bbd6283ba7356c89f4e147ea936036422720ba3793126a1d85648e. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USA560629819.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5703d5011f9a2386ffa50c396cba7a0bf9a899f9e8041f4a866ba693cbf8c90e. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USY251634040.