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 0x6dd8d01076cd8e24769532f4a62e801bf8789ad1f79593359dca23623b863854. 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/808a6bbd-3058-496b-91df-c9166e25ffd8.json and https://artists.proofprofile.net/proofs/artist/808a6bbd-3058-496b-91df-c9166e25ffd8.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 0xa786ab4606c714868954f671aff142639400271cc53bc8b67879669773679131. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZFYZ2335162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa80f6f9bf01d5856daef6bdfd27f016d44b155c2e38b743f51b30b646b065a. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZFZ42338547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffcab8470e2dcc473e2f9e41a4916041da46e1b1c3ca5d5802c13feb31dfa85. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZFZ42338548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c101cbbaca81eaab2c7e7195bff49aabc209e35b0d27db1ca82593ab11db5ca. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZFZ42338550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dee262029b8cc585a137deeb1a6ff1c2075767d807f68b26341f2f6d1962630. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:24:11Z), 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/QZTB62383488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0279e46ba086f9c67f3dd4069b3d3f2e01b8748b481969f892aa0d94c62641. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZMEM2479199.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22952f5214b94ada302234e035940dacb9544cebf91c0b74446b2fabb99db94. 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/QZMEM2479200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33596e297b2647b42877ca7f9637ce1bbe148d42d094c9fa5bbfc1f556bd0ef7. 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/QZMEM2479206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9ddbb0d6f3ff4a7f001195c2905d7bd8de0464e8cc0516859d5f41e1ca99fc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZZ7Q2420609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb3dc0691a87615d492d48832cf838f9baa630e4aea142ccb62c1e093affbf3. 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/QT3EZ2409074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fa0c1c1f0f8023951c285c7a2d720154db72919ae3a37d36e979ed0d3d68b9. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/FR9W12517696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08cea8e72891ea5e7eff287fad878d4f3be1efe9a4c5dd860dd7779fe58c785e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR9W12520193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fa0c1c1f0f8023951c285c7a2d720154db72919ae3a37d36e979ed0d3d68b9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR9W12517696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975731e5af709dbb3ab899c1cbc6cb34f025c64d46f5802089393d908c35f217. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR9W12520194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef140044e74050b6bb1716ff96ea8762dfcffa96c677adc6f6ffca50a61986bd. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/FR9W12520195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f80c7f6f9e63667e09c62189ce789c554571b55a2bfcb77ff6b430ba63b8978. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:03:55Z), 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/FR9W12520196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826d3a0e28a959332c2b5ad70e35bf26a9be700c239e7d03bc60f55a82cef768. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FR9W12520198.