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 0x3608bafc82b80afb353d3acb3c4ea672ba405eace05444b0e5dd9555cf245c8f. 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/0e126b03-5200-4333-929b-6723e7ac79e3.json and https://artists.proofprofile.net/proofs/artist/0e126b03-5200-4333-929b-6723e7ac79e3.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 0x51f9cf74f8decb63d786b940ec791b77e92766c18f8348db13b388942f8d73f2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ31965890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00fa7b66633fd89bda55cf6ba492622c03dfd7f4d6424e63c7584e318ec884d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZFZ31965892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ccba284975ae97970e590435346af4cf7496388c8e7192220777c41f1b6c82. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZFZ31965893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9297192327fd41e62d336acc12acadce36fa5f9827483bd87a91e2c8f2281728. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZFZ31965894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2132c7b5121be1414ca6a8e9b590b9d385ef917fd45490436ba6713ee649f7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ31965896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ae2ae1bee46b4e7dbef20360a47639d16da016621b96e884d0e29082678d12. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ31965898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07562a3a88b239777f32ba2d477a885cca8d9fd2d5eb6b863298813cb88a34b6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZFZ31965899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01519e77b6bf173839b17f472f94c79c90ecf235edbd6e376cd39b2c58097732. 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/QZFZ31965901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f508da393194ae54bb16f21a894ea66f76d9ab7e4fce5e6dac4a42db5ad382. Chain 2 (Bitcoin): anchored in block 957034 (2026-07-07T11:52:37Z), 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/QZFZ31965902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a7ea4b8c666722910f7dcf5fbce607768e62444f76c4b7bfd5b8183d8f1286. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/QZFZ31965889.
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 0xd0184917b7fdc3224cd551f096c67d92a7020a31cc9b48cda02c6adfef9ded19. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/QZFZ31965891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c18f7417101ca86a9daf5d55cfc4bbe142e4f64c5346b2ac4c36b471290fdd2. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZFZ31965895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a21489c1cffb580f5c9927afb7699d04f8b5ae6ab0322676565f2146dda5090. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZFZ31965897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9daabce122d933e9750a9e365228afd2c09f99635be83412c3e6495dc184ae26. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZFZ31965900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9710569c83669cbc37816c5570722214ac04a559fab4df10e1db59e60189b38. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZFZ31965903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a86f385def22b03984a20a11e96516af36d11ec41d926a4eb0483f0167b5ec2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN91994609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c59a2836f26e76720950ca84e760507c1e90bf4e830abee545669fd6deab489. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZK6P1957191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646f8327055106d5000deb01f6baba8e71d64b879a0a99b8bcfcff668304db70. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHNA2178192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9344d68522ce7c3fd27d9847c7d40a41f134c5afad5b8f19c23b69b7e568c84. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHNC2173502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c657ea98e226affd11ee840e2906d66d52da3f1aed5f7588198509f84d4f396. 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/QZK6M2386465.
Kara Kertenkele (Armonycoma or slt Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf83eac9a7d2aaf41f258a46d283c2520a3f570361bc665b408e22c319b12baa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USLD91727770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7c2735c171b965c666b366b6b5a589ce8ed39d35d9b84314e04d2482820b8e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TR0441210208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16bd95e0f92b5107bf84fac09e50c4bc63aab2df41395e1be8eb85ae06b7c3fc. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBSMU3082784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c52e63f2364dd50632647c5bdce2b8944d5c1ef1f4bf4c3351f8fe009e11cf3. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USLD91750942.