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 0x60c97c5fed5a452f7c53e3240399ddd80ac0b7bf1fd7a57684a9aa45d8dfdf0f. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f6637bf2-5f2f-432b-8103-6bb2be47032e.json and https://artists.proofprofile.net/proofs/artist/f6637bf2-5f2f-432b-8103-6bb2be47032e.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 0x1f2d2acaacc317cfff96c0e6db38d0a3fb71d588f9b2b168c6719d4d2529e0fa. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), 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/FR4O41800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5bec93f779be44a67bfbfbf71e491bfce78697eda01883ab3cffcc2ad08ce9. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/FR4O41800010.
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
Where Is the Queen? & Nécessité microscopique!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5170ab1f4efbaa6ecb89db6ca612dcb6a91397c59b7cbcf549b48819ca6ac4f. 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/FR4O41000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb25ca2fde99786c54ec9b168f9fe570f7c17c4b3364995b5b2ce5a101421d75. 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/FR4O41000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82e514015afa4ecef3251489f984f4647c4e628c77c1807ef31fbd45c7d946b. 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/FR4O41000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d037c0faa7a49babdde67fa4de0c9323d331965437c5e468345510781b2b4c. 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/FR4O41000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3432f7b3b97f4789d34f4eeee97ab6838bf2e3b713a628fffd64c7ebece379. 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/FR4O41800130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469277cf125f062fda585e5b2780dfd7ef20daf595d6b71d9cb3a1e51ac4ea42. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR6F31333050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3ffceb679febb31e17a95067eef4d24369edd9e7579025adb652c1e5fe62a4. 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/FR6F31333060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f122c8a1ff9095bc0e7f63aa8f0539c6054fdb6fc8984f4621b383100a3986. 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/FR6F31333070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e75f1ff3a8f504a2867039c84ab0eb8bc0d7763f803688db0cc6b5868885a1c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR9W11216872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e75f1ff3a8f504a2867039c84ab0eb8bc0d7763f803688db0cc6b5868885a1c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9W11216872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37ed077bdeaaff6d77da2e2b217d35e7ed9a95616605679fd4beefe9eeb828d. 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/FR6F31333130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b86efc965c135bf1025aaf78ae7f18fff76c4b7755fc6625fefd0f2192c1f0d. 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/FR6F31333150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd064baf80ee3092aa8695a58c1fb63c356004be3c146d05890ba7879a0a58fb3. 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/FR6F31333160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc076fcf0e640dad83be57c4606f4d5769a8eaa7239ff702e4565059cc6961c14. 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/FR6F31333170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91e31d5cb840b43b826fe8bddb2b41125aa02bee4d9a8d5c9d2ff11b6752d54. 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/FR6F31333180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90b61034ad291799fe04b5d766f7d9cb3ea07585a75f79636a796ae059efb72. 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/FR6F31333190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e5c21f7304363c9d43d823ff330888bbb4de4f4bcd9fae31b4f55f6c802f6e. 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/FRIGW1200200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca3636eef6dd3e5cb14cc284964cce4e21801ad8173f17d9b529efb39033465. 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/FR6F31333240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd419a2d8772f9a3928a1f6f1c58dad802519069596de32221c6d2a1e05054ec8. 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/FR6F31333250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e880d8e9d40c5574f932c7369ad426e1d170774fb5e5ae0db971a85fc49845. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T15:37:42Z), 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/FR6F31333280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0d956bb2a366677442bc651b693c34929cb7a6d59572c59acbc267a4050269. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR6F31333110.
A City Gone Mad With Fever (Deluxe Version)