Subtle may refer to: Subtle (band), a musical group consisting of members of the anticon. hip-hop collective Doctor Subtilis, John Duns Scotus Subtle body, an idea in mysticism, yoga, and tantra
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 0xbdc056541c1c1063878fca9cf33fdf2df05106345f75923d452e827920e8c647. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e162d1ed-280c-4e03-b67e-0391a0db3da1.json and https://artists.proofprofile.net/proofs/artist/e162d1ed-280c-4e03-b67e-0391a0db3da1.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 0x29087098ad52955fc82c94209eccd440b4422f55eed474a78e684b88b419b3bb. 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/GBBPW0400159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04cef7576c9dd1890c33fbabc53c1aaa8a933891b15060c07c556125373d761. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:02:29Z), 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/GBBPW0400161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be7537177a858e470c185bb5a0633c74f4a346197d87034793822105ac40098. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBMYF0600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9faa28e25b1f973995ffce0f9d2670eedc0cff7733b57539339156efb320de11. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBMYF0600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5598290d47509390c11ab262ef2379ccc5bc9d5561ef400b5198294b1de43fb. 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/GBMYF0600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4932fa3e51314074e594d0874148cfd07ba3b6deccad5d17ad66849602ae1a1f. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GBMYF0600037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb373da7b04d7148befdf76ca482f20a1f1b48d1ecf2ce3bda7088cbc85501fde. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBMYF0600041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca32ad5ca45fe60b310a16b957b82f64811a4c69aa53767e563d6fb12f8d31f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBMYF0600043.