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 0xdfda5ba7763c3ce81fe46cf38148cbef2e5f0cdc24914694c5d47a61ad8d1312. 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/2bc0d30b-738a-42e3-82ce-0246d32604fe.json and https://artists.proofprofile.net/proofs/artist/2bc0d30b-738a-42e3-82ce-0246d32604fe.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 0x6ff8f7aa14fbf97b381da7ea60ddefd77053b9655fc662bdcd8f5e7a98721350. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:03:21Z), 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/TCAEY2046372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528481961efcaee8f78f7b6bca4ad768d8b087768ce41de4b5799d88ff4a20ba. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCAGQ2291256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25cb398cea70915c9d1d79478bd066d683523fa7ae5c417d88b88f2313307b6. 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/TCAIP2475009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b101b702b2590a0ad73bdc04c11cb9692de22b9fb770079bc7dc687d7f6793a. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/TCAFP2188734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e23da73385992d85ea8f68bcd342ca7bf54dd81b28048c8eec7d082c583f37. 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/TCAFW2147629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71838f1df51e7de90e7ebf51cc30d178a57d0a0cd677c812e059b35176027bc8. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/TCAFY2199857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d5535184e32eb86573e95fb8d0988c10b035c51fccee06f601c0beffeed82c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAFY2199900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3716ec8c8c2390cf9ca19616e4fa2ac4dedeafa53c8cda6b9183f7114ef6e92. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:59:13Z), 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/TCAFY2199918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec2a449bcb960b78803a6fb15d9c9d385e428ff2cecd56e7522982f7c5f65ed. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAFY2199950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02b2829b66f6912109b95b47cb924ecc429d0913f5abc31699ff90c69e29a95. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TCAFY2199960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86fdb84264703d9d951ac7d11483d8757ede15b38395eebed18c207055c7e83. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAFY2199969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d98e0c6730ff8cc72cd435924fca3e0b101e86741f015120a9d8345c19e8d59. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCAGA2222714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb5d68902579031d1cfef3106619645061ac1c2041895d627fdd8acb6c225d6. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/TCAGA2222941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa933f8eca317d03b3683de06c44cabaef507a8af68ae0fc54bc56ac2769279a5. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:08:52Z), 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/TCAGA2222857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d8b1271e97fb87acc8d33d4526a38430f500d20536ef7e7b1cd455107e0d5f. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/TCAGH2205416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e628535df93de4c1581e6835c59d36c1a32395d15d40e97d4b1c2543dc6cf9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAGI2252087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0025818835aae3d7d1640adfce0b917341a9bf0256357455aea92a7555dc49ab. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAGN2245082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc676d71e35fa14d79c091537707cf2c5eae5f65513a8b9a82f845b4eb00c76fe. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:18:51Z), 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/TCAGR2289342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59372acca21bb428eeaac85535fcb46ab79545d84c1f692a791a58695d46321. 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/TCAGY2398647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b6da81ab7a324260aa7acaf435b847c4299c16718e64f62758590f6e3fa8b6. 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/TCAHH2315048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbf0d1382a712d79d28182711261b93238a1d59a259cc9339dd3886b0d49855. 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/TCAHI2336611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2934975a68e62cd0a4fd946b4772d9b4d251f46ccca6fc8ae56e0f12798961c0. 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/TCAHO2301365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a88e13d6bd86853e2bb5d66261b2286c83e6f8fd01decd717d3c2ad1c95ddd. 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/TCAHS2318091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d498225eccf4a980cd06b9b392b53962c6b5d1b9efea0ff444f3048f86023a. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCAIB2480418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e55a4e24df7fd0a57735f9d4fc5987b01706451acd9e36d0a217619e4317dbe. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:37:54Z), 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/TCAIN2411111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598b63742cce589df223331a148523a1a126ee6cdef65affae391574b7745960. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCAIN2410927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c4ce0c5ebeb156c4aae186aa92c3ff4a30a8f12b30a24c1824b53ce03ccb40. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:01:18Z), 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/TCAIN2411180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0449fb28ab68672f8c23358da72b95b206ba1e72355768497a74ec7b306911. 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/TCAIR2454745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0264f3474be30b991ed8599f2db9fc168286352bf2d201f8ccb5db09239f62. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAIQ2455081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ca3a2ab1d01adc5215d96587ab86f91fe365b8fed74815dde9e3a3497151a1. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:05:27Z), 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/TCAIR2467149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1524deba8ffa53863e4c2b5eacae95661ef26f84c87975ac9252237ea2e9959c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJI2568086.