thumb|Eugène Delacroix's romantic painting, La liberté guidant le peuple – "Liberty Guiding the People". An example of a revolution in the political sense thereof. In political science, a revolution (
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 0xb455f98aeffecb92ea5d88f06509f2089e1a8989f9ce8f19054e05fa53750947. 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/2f095a60-421c-46c6-89d8-a5ca9797b51d.json and https://artists.proofprofile.net/proofs/artist/2f095a60-421c-46c6-89d8-a5ca9797b51d.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 0x0a0a0da811fd87435262a507ad500fd56bcf7a971a3ad308329559586ce6be7f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR6V81793644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2832dad3a6379f81497bedab34fbda393631b3c0f130b75580dca89acbcc56. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/FRX281597534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44147ab077468f5bc52195fe72793ddda452d22b5a8a8774e5994a6ef30f656e. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/FRX281597540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f986e62c1f7ff2fb7e8d5be4c56662d903c015376e320390fa8d35a95137297. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR96X1664488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0e3a3aa9e94d1d3095a7012eb9cf903c36e19eed1f8c9931edaf234f4a31c5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRZ051700265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183922dc6a4e12c7a2740ae3e424b715bba4b738163241659da621ca3a969d18. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRZ051700263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898b2e7e29bcadd7ccde25eb7c492c457425b7366c03a7aa24ae23afb41ef3ad. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/FRZ051700056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4bb4373702ca4157be0307c0712364c519272cdf29838ce5fac0fc9f739b92. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:19:45Z), 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/FRZ051900549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8e4e665b60f2105a6b113403221a7e1910b59a6194a7ed6e13ef1b335f79e8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRZ052100645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ff28d4abac41aeb10faf2b8f41c77abbc84f1e52c4dc4e92d6350bcbda97e9. 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/FRZ052100656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585a5dfe0b5d0d7cffe09d56dfb8683a299b7e8362e33a788a8f2574975b0591. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRZ052100659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e63f3a7cf39af8b316c7ab31cdb5ac443ab08abf0f7147527773f16afc32010. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/FRZ082300731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02cf4022b418f7929a4079b89867333a6f9b970fe4222b3c63af24db6085b21. 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/FRZ082400189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818b1400fa7ce0fd3b038c2b712b36004f886263827229ec6e43c4e4d96cc42d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:10:11Z), 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/FRZ082400296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02cf4022b418f7929a4079b89867333a6f9b970fe4222b3c63af24db6085b21. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRZ082400189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8412038dc883cac3e9d6d4463cda5f1d38aa4e29af6beaec237ce7df651e770e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:28:12Z), 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/FRZ082400291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295393a289e305ec272174f32220125f364d73019b4029d4fb2f3f31064b2ac7. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:54:16Z), 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/FRZ082400292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24087953a461f4016848378d937b99bda156dc396d96f240a7e45df66de22f1e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FRZ082400293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0859d953384c148c346a36dce67356cfa05391be6fb4a4e2aaef240513c5012c. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/FRZ082400294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348fa7498ae3d8e8e977d4048dc279a08524668f18aa9867fa633c68831324e3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRZ082400295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe734f7d3368f7f302bbb85c6201e3005abea4496841c0a9b51be235ab5b71537. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:09:44Z), 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/FRZ082400297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1c60c32d2a6a8930e67aa761dd5051d620218f79b82a4777cc3e2bdc1df9af. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRZ082400299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a7b4a690ab894ffab6825c504f5ba920deb75b238f494fd06e577daa41da63. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRZ082400300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078c5838485f517781fddb80411f52bf0581555fc7c88cb9fb57f1621864e7db. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRZ082400301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b460b49b621be7d987dc39f2b305caacb649a69a86e289221533be666c9c9dc. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FRZ082400302.