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 0x86a96fb3758555fee36153d9871e6bb760b0244eaf8d467e7ce0bae450da0af4. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9207dfff-b72a-4dbc-8900-ca21c916bcf0.json and https://artists.proofprofile.net/proofs/artist/9207dfff-b72a-4dbc-8900-ca21c916bcf0.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 0x7a3100de121ee9907cbf44ad3844575a137844d27a6d40ced623d3542b48a088. 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/DEAR42073023.
The Basement Tapes '21 (Only in My Mind)
Vortex (Live @ Hexenhaus 25 Open Air - July 30, 2021)
Pleasureland / Head High (Live @ Hexenhaus 25 Open Air - July 30, 2021)
Between the Lines (Live @ Hexenhaus 25 Open Air - July 30, 2021)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4f3c18c4c65fac7b9cd18cff24d901bb8d5cc73be3fc46e8f21b698948a16d. 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/DEAR42286674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e59339ca1157e8a484f7f869d6c138bf9fba4e77dfafc269256489d0487cee. 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/DEAR42297595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d513ab74f41cf678111b40318c37c796e68223a1261b6682112813f230d37f. 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/QZTB52451297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d16a379c0f9b2e5c836850d9fa5fc8816c16d09926f54dd8a48f3613aea787a. 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/QZK6H2498229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044450d123c87b3a5d78583abc0e8297e78a5b8301a991f99a7aca6897ee1cef. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ7M2515143.