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 0x833081b92e2c5b68ddad63c617bb5b4aae699516c73f0689136b3c98a1eee16c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cc716f97-6abd-4471-88ab-da8cf4c5a953.json and https://artists.proofprofile.net/proofs/artist/cc716f97-6abd-4471-88ab-da8cf4c5a953.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
When the Drugs that Made You Sick are the Drugs that Make You Better
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 0xed606bac439f68fdcdaffd7ac1503f2e64696fb2363d9706f0d4ca43e11a61f1. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZMEP2235025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd8d610e77b226c3f7e8e604b377101287ee168186e8138a6f900dd4b82427f. 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/QZMEP2235026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb945bb9fd52dd689c9a926a86ae50c69a0612d6ead90d4e0cc0f1a4a9d812ab2. 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/QZMEP2235027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f934d787d21ee42c28dbf481236a8bacf54f7d8392f98aba2dcab1b4c996d0e. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZMEP2235028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861040873926d83942ed64eebeb649511ff30a15ffc91243071b75a6cf028c48. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QZMEP2235029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3942f6728fbfa613e0315c6d23996674e4ab6f4e3dd433019a7cff3997e7d75e. 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/QZMEP2235030.
Please Stop Hurting Me, I'll Tell You Anything
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d46892f2beb5f070470f5fb50b250050e8a47aabc476b46342667ba04262ffa. 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/QZMEP2235031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4e4d21deceadae6cd9122e80b308c855c40bfe26c5b3e98226725d0881be67. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZMEP2235032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0ee536fd2816589a3405f9732beb038156d3fbf1e2f54d2622508aaa216f9f. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QZES72495676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2ea6e31b974330d5e021b4c95b6520879349486be9ab9765a2ec9428f58964. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QT3EZ2424318.