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 0x7db0b92a3eb6abca1055d96c236b6ae78b69ab1cb06effa23e49cf92d779ee2f. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09647a51-d908-4297-8ffc-3edb8676baef.json and https://artists.proofprofile.net/proofs/artist/09647a51-d908-4297-8ffc-3edb8676baef.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 0x1ade7cd4c23c64b72ff6442cf4195bde220b2d978e01cf6ed6dd0161722bdc64. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:24:28Z), 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/QM24S2501195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8ce13e0a16508581bcad6c46179cc7d2819e8c3a9a050cde2f04a44e8b2153. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:39:56Z), 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/QM24S2405078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e2f11d9ef2ae76fded983ab9cac1c003e0d89964246bb90674272ac2df1a13. 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/QM24S2501194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4c924911f8be4b05967613caf16b68cece26c3c8e1fb801c2401a94ddc5703. 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/QM24S2501193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6f64457b32d79b596467a81174af035f6a58995ff9f90d5350411853a4f145. 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/QM24S2501192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4788bf8bd4ae1edc97fce1908106f3c44ca98e6f97ac94e130bb9fb0fd10f2. 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/QM24S2501191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11d2049fe0a5368870258a185836b59105ceddcb31cd266c2fb3be8c14e9664. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QM24S2501190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0046aa44060bde542110973ece02b1406cf04f4e1e78bb1748fcffb82117ca70. 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/QM24S2500220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7121fceda1f2d135a411f08edb176dfb55c72fc6687923cd42c88c30d334b0d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM24S2501188.