thumb|Citrus sinensis Osbeck painting by Mary Emily Eaton from a 1917 issue of National Geographic thumbnail|The orange blossom The orange blossom is the fragrant flower of the Citrus sinensis (orang
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 0x7455bd7b3589834f4a0cecbc4d18b809e3f4d9bb8bc3e1e3a434c894e4b6dee8. 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/a60a9c8f-d9ff-4eea-b679-b1a93e72a92d.json and https://artists.proofprofile.net/proofs/artist/a60a9c8f-d9ff-4eea-b679-b1a93e72a92d.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 0x83f4e27a7fe0d66ab7de9b59ce40cf5164897ae87a741dbfef852f77c1171899. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/FR9W10400192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9262e20f3f53bc67d259647ed3be741bbd4aeba1992dc0329ad164aca26ea4d8. 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/FR9W10400193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f532cb26f3e1e43c97dd9f3a23912d056766c5c3bfa0639efcd30149f29fb4. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR9W10400195.
Ya Sîdî (Générique de la série "Marseille")
Ya Sîdi (Générique de la série "Marseille")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea5e07122f832a5a28afaaa291835666e6b8ecaedf7c9177e1b13d443a9bf13. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T03:00:47Z), 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/FRX471410007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf1fad20f854249afcaad83550ffc5b759723e30ad2799311744c446847700e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FRX471410005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e457a8b17a14cbaecb8623ab95d4dd63603f9602a7a8f41206e240a9b71c02. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FRX471410003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33247c692a8da846275c42f9a4a6d6ccb23c3450e2cbf3c8ccc40c806c5205f. 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/FRX471410006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa247c2a79209def53d9266ebee5e191d20bc078a05dacfa6e72170223810125e. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FRX471410009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf1fad20f854249afcaad83550ffc5b759723e30ad2799311744c446847700e. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/FRX471410005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e457a8b17a14cbaecb8623ab95d4dd63603f9602a7a8f41206e240a9b71c02. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FRX471410003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33247c692a8da846275c42f9a4a6d6ccb23c3450e2cbf3c8ccc40c806c5205f. 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/FRX471410006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa247c2a79209def53d9266ebee5e191d20bc078a05dacfa6e72170223810125e. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FRX471410009.
Magic Singles - EP (The Washi Washa Collection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4d290300a9af33612ad2df4b974e43383cf665f77cc2ac262386e7d34f5ad7. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FRX471410012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b541be5dc1930087eeda4486e479dc49097817d3b03fa8fd9ca041b669299a. 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/FRX471410002.
Pitcha - Jerusalem - Blossom Live Sessions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6590396d5cb04466d9add875d2b0079e8d2ca3ad18b9d3cd9f1f1f0cfe70acb9. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/FR8Z32200082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875ce6f4f1b90c14bf50d03748e151a761c70cc45a625f3bafb380b4baa18ee4. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/FR8Z32200084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093a65e098abebdbc0067c5bbd0a8c737c6c5c4c7a405962da538e3fc7cccbac. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/FR8Z32200085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf079ed5bb27e875c5a14f67e7d8afca07ca2a830bb4a9936dc164b10d319055. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR8Z32200087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ccd1778fe7bac22ac762a1ce5b3d3c338a965d7fac671bd661692196ee3c0b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR8Z32200088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc26d1ed538b01754a1ff5bcf016d343b3b8a11137b8a0801df952b8d4d30145. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/FR8Z32400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc26d1ed538b01754a1ff5bcf016d343b3b8a11137b8a0801df952b8d4d30145. 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/FR8Z32400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85c47e1e83e1f5bd6b40329b248ad073b9f5e82cf1e78d25ca9288c91dc80ed. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR8Z32400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3995eec519b7c2cb67bb5a319ce7e850bff302bcb178e4d3b0f4bea419132b1d. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FR8Z32400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b70f9747c1200c8964820aa42166fb69b54a08e5d554d2eab58dfcfe4fcdb5. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FR8Z32400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c544f6754c3205a01c9a9e6f6cc84fa873b08c14e9c42d8f69515122ac9cc23. 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/FR8Z32400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2ba749281c2f2e4efe1fc00f32d9d9559d85b626b97a2658a3665b35ccac65. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:00:34Z), 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/FR8Z32400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c10b0d836e75a88e82fc16b3ef4ae987dd822a20efee1491c56fc8ef5afd35a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:02:02Z), 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/FR8Z32400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9517c983e469971e478f2c92ad4da0318137fb6b6edc49949f7c7f0be4009051. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/FR8Z32400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e01f014107d0f5da2a2401991e6aea88b1e3d58023433b362bef102fcb50a5. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR8Z32400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85c47e1e83e1f5bd6b40329b248ad073b9f5e82cf1e78d25ca9288c91dc80ed. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/FR8Z32400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e816c35e22beec67faf3704c2b76bfe7c2c4074492d4788ab7f7dc0efcebfb8. 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/FR8Z32400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3995eec519b7c2cb67bb5a319ce7e850bff302bcb178e4d3b0f4bea419132b1d. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/FR8Z32400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b70f9747c1200c8964820aa42166fb69b54a08e5d554d2eab58dfcfe4fcdb5. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/FR8Z32400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471bf0ab5cc3b2eff4f02495128c712d2cf209e226685c413af923c77afd6b97. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR8Z32400092.