thumb|A wheelwright's shop A wheelwright is a craftsman who builds or repairs wooden wheels. The word is the combination of "wheel" and the word "wright" (which comes from the Old English word "wryht
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 0x7d7ee956020583030738769965e5562ae358666d1d5e0d159a46b97b00a4d871. 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/158be575-5309-492b-b07d-1100e0df9c45.json and https://artists.proofprofile.net/proofs/artist/158be575-5309-492b-b07d-1100e0df9c45.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 0xf266dafd919058ddf34374dc70a6afaf62083cb7fa41edc9b1422f36d066e11e. 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/QZLWB2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7194ff9b933214cdef69661be10d620a35df1a6e328c79977f4b98c2439d44c4. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/GBKPL2292865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468c4e360864861beb3bdc007a235d176e00e56a938d27b6d4d0b7ff7a4c3ad2. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QM4TX2340007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82486627a3829e597355ecaedd110a6fcdc99b7d881d6f7fa20de653758c14d8. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZZ8B2396865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68783ab1f2f18bdd16f508e5e086a4859aedbe23fe4fd93befce624700e5fcce. 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/QZWV32455327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f9e62d513a96cd683e59c9e12f6bb0a68d5c57582eb144287c555d339d3273. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZTV32449854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe252a2df907484422a072f30b8455f91561a511b8095499c022731ca0d1e8c6b. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZWDE2489600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7b35ebbb01bbb35fa353b2ccea7055e75894505b6ef0c905aabf02f1a0f970. 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/USLZJ2538504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe252a2df907484422a072f30b8455f91561a511b8095499c022731ca0d1e8c6b. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZWDE2489600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d645b40bf96c7641c5c5d837f62e95f4ecbd1e6f8779d149f05a50bab152e5. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/QZZ8B2410677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe252a2df907484422a072f30b8455f91561a511b8095499c022731ca0d1e8c6b. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZWDE2489600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d645b40bf96c7641c5c5d837f62e95f4ecbd1e6f8779d149f05a50bab152e5. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/QZZ8B2410677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7b35ebbb01bbb35fa353b2ccea7055e75894505b6ef0c905aabf02f1a0f970. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USLZJ2538504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468c4e360864861beb3bdc007a235d176e00e56a938d27b6d4d0b7ff7a4c3ad2. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QM4TX2340007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990891490a17db3283982c63c609b6477ee16871c7d10f39e34d0a5164fce767. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QM4TX2317683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc753edde70f2270eb10df955e080b86e0a00accd867306a58c2bf729887215c. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/QZLWB2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82486627a3829e597355ecaedd110a6fcdc99b7d881d6f7fa20de653758c14d8. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/QZZ8B2396865.