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 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 0x2342e22069c12f1b84316c00a40cff1f211424a0dbb4b3d0fbf48769fa0d8da5. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d9fe208-48f8-4687-b920-dac06cf21957.json and https://artists.proofprofile.net/proofs/artist/9d9fe208-48f8-4687-b920-dac06cf21957.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 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 0x3b1c5bfa93b3edc457d9bee0c80f95c52432b5d38da303d1e82eb5cb02820450. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZDA62507625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced21eb79447bbec527097f2741bff1a71ca79be2dc7ffa594fb45c74a434ebb. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QZDA62537346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64030a1cd163154987a66e377b92470d13a7df87300efb3bf0eb350a94564319. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZES62527141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bfe195e49d95ea366051466ea2df9bf314df5557ffccad7d2e50e72e1b36c4. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZES62527142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0a7b1fc1f197bbf6ac1b8e1b41313fe97766f2463d4fb6a17f9a1f34029232. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QZES62527146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001fdf92570a4b3278fb431e311809e5e07858e771bb6a078f472fe11fe0ad20. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZHN62595947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fecf9be55a1c63a0f15ab17f668be3929a38a568278599e5156bf4268686398. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHN62595948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2edb3c36b4855a0ced0339830a3affa399694cc18f5d06b8bb4d20a51770055. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHN62595949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924fe4f2531b91406b0669622e22b5c14fba0208ac04ea115c03c30c59c54220. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHN62595953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a28dad955c6c35e7beec7a02821b63aa2003104a8c2425fbe4a7210ac9078a. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZHN62595954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924fe4f2531b91406b0669622e22b5c14fba0208ac04ea115c03c30c59c54220. 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/QZHN62595953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e95e07e99c54aa03ec2589bd72d25affd8bf603567605f0485fcf164a5e30d8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZK6M2512140.
Journeys to the Heart of the Void RMSTRD_2025
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10daf48d8deefb16e5efab9511807405c89479d37306c2c47322ae1523cd1212. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTB72562565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1a9338a7130be53c1dcaf3f8eae25e9ded75cb7e19a974520cd0cf4394e37d. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZTB72562566.