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 0x6b7aeeeed6d824dc3e34ebe6a8d686d0deb2e801894a0b384d3ba9646d443944. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c55661bd-c937-4108-82c2-42a6320cd033.json and https://artists.proofprofile.net/proofs/artist/c55661bd-c937-4108-82c2-42a6320cd033.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 0x712bb4b27a56aadaf550ddf139adfe280f2c9483e0e1e03069ea0035b81ad439. 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/SE6SA2410980.
Im Not Okay (Solo Me Korto y Me Kemo </3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108d14d2296ddbd7dd369d09a076b9aee79d74bf4dc7d1bed9a9fe646a836176. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZGLM2491689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52fba0acaa791c0522895b1b56b4bd0403cff23dc2f0cff196bd8f9f392060c. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/QZ5AB2489955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb8eebc10ddc4bce898d796bb348905485fd9fb711cb7c0732ab2ae338a642a. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QZNWY2318126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c9f1c0c7f277facfad761ff0b3d4629292e51c2f96763eb53bf5e9af78e18c. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZGLS2387918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6edfb50b827af726cda24ef3f872c2195c1dca0fc384d19a04f67884f5970c. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZHZ52206217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82271f9c90e6fe0b2e29aafd22926bc358e6cc561d6ee1cb6bba12618f485220. 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/SE5752490876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0938248a1445815008f0127fa38ac2625ef65d0ad1711c5b2fc6434e3cc31a17. 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/SE6HN2450531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9845c0c582b6cc65d7978c3b0e6edc3d6fbe33c29aeafc754536306cef37bb. 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/SE5752460069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa955b78c19420ca12576167a9ef8bfe66094665fafdaedbd7dff57c6d63367c3. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/SE6HN2450532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea31bee3f81f35dc49762f0b257717cd3d11443ec4b101c6e764e6c0fdc4461. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/SE6HN2450533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11579e39a3da78981cd78c68ec0a0f5175aa05b5a4f7bae3c5a5563cb425f07. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/SE6HN2450534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c60b8716904268e5728706320259d9563cb11fedcb53223794aece53c9ac54. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/SE6HN2450535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1bbc83c09ee4ac5f95603bfee041bb79082d3d2eec709c0c3fca00a76fe0d9. 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/SE6HN2450536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85941c6dbe4dab1231680d3521524e0e4c226ac4831cfc357a789840cbe418e0. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SE6HN2450537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ee7d0ffde51af1ebe6ba2b47cbb1a670853c8cd244164fc1da2d951690574b. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/SE5BU2470332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc964b4ba876e89d2456042cd392ccea9252c3235a99d25c8e3cae7f8a6b8de52. 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/SE6HN2450538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a173b8a73e36c80cf04399395ffab1003c4a092a6fee56e7c5e6814adae4527. 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/SE6HN2450539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e81218b15a80636173b73a150cbfd60b6e6e355d675a945bde8b417b0478f38. 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/SE6HN2450540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591934e8353d7d1dd11f27205845dba3bc8324879414b30875e5627b0b146879. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE6HN2450541.