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 0xd5c2528b52ec942108e117d50cab6ead6b0d4cd06977313df4ccafedebcb9195. 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/8c7a7d68-2739-4d6b-a429-187492c57a8d.json and https://artists.proofprofile.net/proofs/artist/8c7a7d68-2739-4d6b-a429-187492c57a8d.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 0x4e6fb88a595d257531e1069b40b05182149a479c1ac0c12580b56d77a5efde28. 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/DEEQ82200059.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e478e09c59ea314b3799f23e9e2cbac7256a0d08d50b18d6d5f5c9b2fc559b. 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/DEPX82200003.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1d71e26ba030abce0b5d78800c461799458dbccb21a98764ffdc283d732a21. 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/DEEQ80700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec918f5fc6ed56a88ef63e8239a5ecf497a81b8199b6f25060e41d00b9212f4. 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/DEEQ82200109.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00364ecfbcb0caa0791d7963eb9e9f94421dc1ed32f33ffa0fa0c19a23019f29. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEEQ82300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b78a3e777b71cc8291fd73d837b28fe7f8c032fabfd1e4cf3c1d975a98eeba. 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/DEEQ82200105.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf629be9672a10f590eda87a41d34ea3dd1829e796c24a0c92c60e8ccb8e0cd9. 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/DEEQ82300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf404d287d35ba384781eb6aafeb080cc5f74243b33f81bb6cafeda18fd5b97a8. 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/DEEQ82300088.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2707f56cb3fb88ca55a1e04f0bdd49fbfe5067ad40776316ca82760be0f81fff. 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/DECE72401361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd4e9f1c363eb14eb2da88c7837e028eb5f7002a40d251f1fdeb440e5930e32. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEEQ82100022.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad261c37c57b5aead601d507cb45b24a80a3d6537c10a6b1664c782c4ef0d671. 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/DEEQ82200090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b78a3e777b71cc8291fd73d837b28fe7f8c032fabfd1e4cf3c1d975a98eeba. 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/DEEQ82200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d985620a34aaebbda1a3d1319caffb612c2e6748ae76ad13860b20a911e7ec9. 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/DEHM82100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cea04d6ca6b1ee477fca9bd1f88371bee47a89caead169b739ddbfdd3576be. 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/DEA622500252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afa0b755a9757d8949448ce539f07d91e8593b4ef0cb62a66fa975f6c28e492. 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/DEA622400949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fd929fdd29d8d0ea3a4b51cc26368028d70d2eb0a980afe7c5451b5779886d. 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/DECE72400622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43835a47d8f76e70119f0c36719253481cd189141e994f3fd9970e638ac6c0a. 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/DEEQ82300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9793fc5a317029e570ccb9d3ff91c993aeac0b92acaded0d9fb12b49c7e7efee. 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/DEL942300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552b4b719d698cdfa10c53a355ea6cd54ee98594f61b0a53937af4e566d358fb. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/DEA372011697.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e48dbc33d3c84bab1b6cea621a649733b5963625a5731c72dbfd0c9b9c29bab. 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/DEEQ82200135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c7a248bd86cdc1e2f0b545ce77037be92a227934ea53ac6689a2f6b40006c4. 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/DEEQ82200122.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842c9643d4c3385494aed1a7d941f01096b155d9fd379b665daf309963c9ff3f. 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/DEA371902026.
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