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 0xf27a2370c2c13a4b4e7971f349e4f5e4d004fc8c14f2cd3cabf1b9feabe6e1a6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9cc04bfc-4ba2-44eb-8b63-55fbd65ef90b.json and https://artists.proofprofile.net/proofs/artist/9cc04bfc-4ba2-44eb-8b63-55fbd65ef90b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
My Dark Subconscious (Live at Birkagården, Stockholm, October 23rd 1987)
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 0x0960f28717f9a466954b15e5d13cfd03d1502da461e9e7d676c4a8778eae0f53. 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/US4E41178113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f03a06500cf63775ccaf21c23300af95ba72956634fd4f870590716f39b1cd. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:21:10Z), 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/US4E41178105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03af73916c4d22d42aae3b09f6b1438a8dcd0e3263c3735c7984eea532d47828. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US4E41178106.
Tragic Dream / From the Dark (Rehearsal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4416b16c4bd8dd1ff3bd8f79fd46ebde17026e84f207dfc5fff5667070a41b5. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/US4E41178107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafde43b855ec6407241a89954bba7d541a58067efcb00184f4f11490c8321b9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US4E41178108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e05953338df0751ef85e4e2d3fc93dfef54239e0dc9e5a7feb2525e91e38917. 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/US4E41178109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1311e50717f63128b4f55f2e3d3e49c920520d56056c4b806453d1472f142cc. 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/US4E41178110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa616d156782862fbe380620e79e95f6ade8dfd1881efb3102c837b6e6e314c6f. 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/DES560901505.