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 0xd3b6fd41aa1799318b40de16286a4d1d1c74a3d0028edb243b71646d853bdf9d. 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/2d981507-c4f9-4c88-b578-60faa4e85381.json and https://artists.proofprofile.net/proofs/artist/2d981507-c4f9-4c88-b578-60faa4e85381.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 0x475895ce977bdf7dc80f1d0fe9f8954304614f7a633351e5c9c338996d541521. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZZ772424059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3987f9b68214102083144a4cb8014cce34c51c1370a5a92c0acdd8fc341cbe34. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QZZ772424060.
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 0xfe49bb8cfdedef49c3deb71b1d3386bc1a110252ba380246fc2639fe7c5b5f0d. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/EEDD10800201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0e418a829123486c378d6385be898d71e7f0b11489531e2d2a62559fabc5dc. 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/EEDD10800202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424e012da3a92b1c4522e840ad0987cf82794c16ef7c7ab1f489b2125fde7ed1. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/EEDD10800205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8261ae910fe588b94719cf1701120822a16df6e42c78975a2ed717773cadce8a. 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/EEDD10800210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a4155b25de7dee0668900733cca2b6e610dd594311711ae743fde78be366aa. 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/EEDD10900211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a56527c024a7ecd068dafc51f13e487088ce6a06cdd7922fdf23d8ff7ff12a8. 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/EEDD11200206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc5efa7a8bd0a0c49007595588f5426c8613e9b3ec422a01f59bf5b05d26105. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T11:59:26Z), 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/EEDD11200207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3023b5fc64eb7dc7b8c6a87b15f6ec7445bcc91f21870fe74a449841962033. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/EEDD11200210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a968e4039c1ecdfe95412ac28c7adcd481593e717854bcc2c9bb2309777863. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:57:39Z), 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/EEDD11200214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d92ce5d7a12bb9ef3cd14e10fe0faf96e27b9e76edca4edf126e3fbc1f2aeb5. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/EEGK11500001.
Forsaken Grounds (Reimagined) - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea2e44c593b35e88b667ef9cab982738d1ded29c5bff4df88951330c345bbc1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/AU9G31812905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3f7662031ba4728f31ac4497a7660057bdf6d1ee0dc31342c9f172dfa7408f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/EEWW11600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0824e84b41bdcd553c4c16d148fffdc1a63e53133cd065911a00d5cbbc87cecf. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/EEWW11600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fa94d6323704a39c081831ac8891ccae0ea19d3ff77f7f3ccb98ac6318c2d1. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/LVA101100149.