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 0x43332bd3aa39a1903203ee067d8c659f16c85f06ae4d46adde33683ce3642d52. 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/105d61db-1a2e-439c-8e1b-5cd03dd9c9bb.json and https://artists.proofprofile.net/proofs/artist/105d61db-1a2e-439c-8e1b-5cd03dd9c9bb.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 0x5894cdda659df45d262177e0c40f8728752ed1c02d2443f7436a0a3f00f81482. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GRSTY2201517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c72576026130a3dd4ace4bfd41d089de6daa43a4f5a7e0c95e887a9fea7654. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:52:18Z), 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/GRSTY2201526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c13c8b88f50a8daccb6e43d7beec6b6c9fb5e8cdf862099b39c4497568eed3. 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/GRSTY2201457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7786cd580d37470870de262f64b13a351f0bdeb0aa717cd07932bbd0d0d78bc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GRSTY2201432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddf537c43f5e3b289e663e4e396f016298ee6bf1f6dce74583c34bb06b848d7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GRSTY2201433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ea8fea4a374f4c35fcc5a8f037bda6fbb8137e3241848720dd8e34bff74ebe. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GRSTY2201434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322385785357051fa1b66035e665d5a787e2ab8a793c1bc9adfb3a840a6533f3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GRSTY2201435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec4b06a7418b5310981a1f123547f005a3ae9e2ad4e5c1d8b7132afee690563. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/GRSTY2201436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712d6c4764854c2f88be25fde6d08a80a4dfbb9c69f08306aed39a1509a7152e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GRSTY2200523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b2c96144d8d78e2f26696662966171d69bc6d6525836d434ef09b2230b9bce. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/GRSTY2201874.
Kyrios Nekrikos Part II (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69adad084253e5fd558dc6abecb6a3453d55ea395be0265f76212c9b0bf09d97. 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/GRSTY2400327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b90b2be362c95eb859e50bd58f069986e9c81d589572a686a6027874df8672. 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/GRSTY2400330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e0026acdadf325803bbc2cb1ccd13ae07f10d5505d83b92b9a15ca98b222c6. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/GRSTY2400331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd392ffd31fdbaf9cf5390c75069dd15c4d57655bccbec6b484855f950a330887. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:51:06Z), 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/GRSTY2400332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70dccb3c3926620d073237e0a91ed6fd49eca9666512e4bc883087ec6b8f7165. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/GRSTY2400335.