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 0x1760a6d45437f6b5f94544353f4e3041588a74aca3d585d5530b9d14c6dfdcc7. 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/5d06baa1-a7d2-4942-9686-2d41752e49f8.json and https://artists.proofprofile.net/proofs/artist/5d06baa1-a7d2-4942-9686-2d41752e49f8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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Thunder Focus: Concentration Study Rhythms
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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 0x7cdf59c9d6632273c08a7ee0f9367dfeaffcc9e44c2596e7a911cfbf8eb82d7e. 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/DE1O62469697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603f0cf5784476e9db23ed55409003161d77495a9fa44f79fd10f2d6f2fd2cdd. 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/QZFML2100090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdb58c34ad80786bb584ceb1f5ddbbcb5196499af8e265b21e82d74a22c49e2. 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/QZFML2100091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fc5a036d0179d8fcc4e91b3eac45d99246cd41a980439cf11fc84543fb4e0d. 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/QZFML2100094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109faf4bba7022d8017bf1b7a76ebffca884c934c2f7a276b89d747a03512c4b. 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/QZFML2100097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316b9f12cb944ebe76870e5397f50af9566bdcc3f070c43db58e8d12a39d0cad. 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/QZFML2100098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55deb8678541e3065f8b53ee1345e58165cadb15639463b6a19807c33fae9c9. 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/QZFML2100099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e7d088abe550bb898a78b347d73c04a93c53832c845faef78820e49d990a0c. 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/QZFML2100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06cef8470139e68b46afa5f5698d9a5bd5c6138512e20bc4b039885a601c332. 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/QZFML2100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1068d480ac6d2941a3fcae3798d2e9d42375a54223fba551f6bad6c8f5691b14. 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/QZFML2100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0583a0959d04be103ecbcf429f65fceaa3254147b45cb4906984e27326351fb1. 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/QZFML2100109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd441c349cc3c32564334315252680e273a5e978f3b9b7292d369dc2cef452b2a. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZFML2100092.
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 0x631850edb5b6db305c8f947f9b63d85353509f1bfe43969517aef91be24569f3. 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/QZFML2100093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000b69d7127b3f0f228cc1d569fb336fa29122f102d2addd06ea805a6f393988. 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/QZFML2100095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c020b6c28445756d2e172ef0596214849bb645812f3ea944c9c96fb1bdb9ef3. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZFML2100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfeac83c31269598835a06a62accdecf27aa9e462d1eb311c4ef5d234b247f6a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZFML2100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4b348e2fe928807673fa200b08d7da6076c7b69bf0ed5014be1b2b1e2fb386. 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/QZFML2100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8c00eed6b78ecb4143be56c65294cfea8803c7576ad71a4b9e56bf77fee71d. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZFML2100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804c0ffb721a042996fdf33bba17a73370c813d44b88872b821095fe4a7de1ae. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/QZFML2100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72748d259f663beeba45ef3cc2ebaf7bf268b91b0f8b5d0c0ab3bd9899075fe. 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/QZFML2100108.