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 0x90a9efd98efa901e98d103e521dba1a29ac0999d6ef819c7485f2295e2a2153b. 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/b7bbeb9d-09e1-483f-9283-6ccdba340106.json and https://artists.proofprofile.net/proofs/artist/b7bbeb9d-09e1-483f-9283-6ccdba340106.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 0x8152089dd793bab83ca20075bc565544b8a337f8e3bc6b02c003b80e0a018917. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCABD1238480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5f8bea7e6a1957f7360732199c6392aa8e5c7d057184e46d178d3df33f2dce. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:45:55Z), 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/TCABD1238489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec69645fb9526af4b2e9f31d85785e62ace6a758951e3d29df9e3cb82b07c3c. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:52:35Z), 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/TCABD1238493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ed0e9a3e46adc4e016509be8eeaba5715845e62707c56d51ba53a560c09b7f. 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/TCABD1238494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb53c706a7a410c8e1e636bb418452848a5ff82f9b81d123224364ff36c8f3d. 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/TCABD1248256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47c7213a999dd27dd14488b5e25f34d5ba3dd9aaab963cf46bc210e98ea0ec9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCABD1248258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31368b4f92ae047098ec387ca08d2b5975b44665619c7780025b6daffc833d00. 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/TCABD1248259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1661de115150978c2bc01021e8707c58ea45217d4aec2a86171cf7404559d9f0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCABD1248260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b970c9c713171abf2c5cc3a97cf0132949eb36671951107662bbe6502d6d958. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/TCABD1248262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24a9f85eb75d64d952cf1c2752f957aa2928087fa5d1be4729b878a1a143d8b. 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/TCABD1248263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6791c48689ff720e7ee3d95e90bf91759e7e815ee481047fb31bb4dfa32c5ac. 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/TCABD1248264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b61262741d9688e3e44e814221f7241612fa1b85800ac9b3bec02bc1ecd821a. 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/TCABD1248265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe2194197e12c3c8823052a91f0c20f68887b4bc815c884458518d244cfee4c. 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/TCABD1248266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ff5adeeb4f317421bc67b4857c6a43d139c61bcfc989035f20cd0c3682867c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCABD1248267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4495847e40c969fdf1a153ca7a9b8e25c4e3c28d9a64b0299ff773796e7f14. 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/TCABD1248268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb3b9d68239aa6aa8d7e6c12d792ecbbda8e6b94309299cf4dbc271ccfed194. 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/TCABD1248271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678fa992fed0353cfc4dd08f15c4b86b4c583e829e735854f2733fe39ff299b3. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/TCABD1248255.
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 0x86c9106b6078a0180feaba44d5a883b39366e4fb9a4d73c2dad5e19605608611. 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/TCABD1248261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc310a50baf64628dfa34ae46c73cd6eaf63cbbf03209d02814e2279ef0200f92. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/TCAAX1151615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea9abf6cb395007d51a76903af926f3ddab4adbeb31ce62213e1c279e723be7. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/MX3741401060.
Electrosinfónico (En Vivo Desde El Foro De Arte Y Cultura De Guadalajara, Marzo 2004)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe761d60951f3a4bfc60b2d48a0e6d206808c87f9b45cbcebf1c56d9bea29f74c. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:05:07Z), 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/TCACQ1618405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1175cab15bb10bbe9dd6b8975ccbafd0a11b7b9ad5d34d6420043c65e77f12b3. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:15:14Z), 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/QZAPG1726447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60f6acf29a9f28370a4382f1cd22c2a365cea2e1ac6ef411b4369f9ebb5d2e7. 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/TCAIF2469635.