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 0xc84cb72333dafd08225031192982c61a420a47b085032cf75ab70980c58c8716. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28c45cd3-0caa-4429-bb34-082c0e2840e5.json and https://artists.proofprofile.net/proofs/artist/28c45cd3-0caa-4429-bb34-082c0e2840e5.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 0x4242b7a65aada8226d8bda58d0e7577d491bf9f405e02dae9a933d7526be2d3f. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DGA0L2411845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85428e53035af0208576f42c160f29210abf27ad4d43e4b1f8f96757e351b884. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DGA0L2411846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3aaa32c0b57b4843bbaf87b0ecc0578a518f5b62e9bbc5878202ab9899745a. 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/DGA0L2403821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6898b24c7c5f73cbda7953adf85c44b6f87f7879fae1ce6c46ef5d04d29eeaba. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/DGA0L2403822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6838a92f95281ef121cad66c0700023245bbd64f2755a41f8ccd7456604d9411. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/DGA0H2495718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82a3ed200f51c94813deed8b133c9f5730f172171d26389e1a9e6699e4a54ab. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DGA0H2495719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e589a586b81f04749745fa61e92d14c1e0c2ad5b281215cc4f635b49cf15c1. 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/DGA0H2490999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7610486fabb789b011f8e793e5b07a565ae4f0423cfbe3f0f7b8c399e221a45. 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/DGA0L2411862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f43a9ce082eac1be07009d2b75f3d92a9fa58e025b3890d51c098f11c6d20f0. 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/DGA0L2411863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f0973930f5a9975cc2a7faf07c79fbb28f320141100237aea3503dacb9565c. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:55:54Z), 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/DGA0H2497004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b138982c935ba539cf441c205ccb63e04e950430004c6c6347efb7124e51c9b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DGA082494899.