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 0xf27da98d5e0b93cdef72ef34896b5a60dfbdddb7537fc7fd1fa2b15294365871. 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/50f5311b-d160-4ce7-a97b-d09b3dd9a906.json and https://artists.proofprofile.net/proofs/artist/50f5311b-d160-4ce7-a97b-d09b3dd9a906.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 0x6a9d151125ea866991c52f10ac8741ae466986a48a4733055f505569c9cc0511. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/TCJPT2236110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15b2a2dbfb8b9e8c251c742a4cae86d6c5a698cb675a5298b4946c69a906340. 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/TCJPT2237371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70e133c4d0b3f25ee4ee473fcf263edbb754d94257134f2c2893759deeacd36. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCJPT2240188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48336bfa7da7300b8cf53a4c10a83474008f994a67b1cbe7ee1ec00f0867334b. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/TCJPT2247504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeaea1619958c2acebc9ca2415fc899dcb8776090d737a06dbea1b6942f7a17e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCJPV2370449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518e5f09400dea0f47f2b156545ed7db39fc2ef44b89a2480168ec6ad6515beb. 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/TCJPV2399341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b69900a18d8b604cd9e0936ee77db835439572b7f42b0d5bc6e10fa851ef762. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCJPW2393396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2516b0946e66a8b35c917a3658a268788944ce8346fd87e0b92175855737a2f. 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/TCJPX2326978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840df495cd1d119d70c60a13580d1a50a9d5880bea5631930f3bdbab9b8a488e. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:09:54Z), 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/TCJPX2387480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28ae8ccedf65839fd2ececbabb1e28d982457c59c84590a320fcbdea2ec3b31. 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/TCJPX2394059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50941223ccfa907d093189c3c4d5d22dfc5462f5a0eaa533313b70d9090d0ec. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCJPY2476841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a829187e91bd694e60e2c833003a311c8c5ed0a73dfbc8a1ad97eb819f41aa. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCJPY2476815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e642fadb9cf6d2e9ed0482c61cff966dc7f75827cbf7d833526f51ca5c0f05. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/TCJPA2447106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe006150dce5b36ed29a39a6b487e7866e7291e60f376374a661c3e56c1a794ef. 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/TCJPB2447035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe897d24aa8facde2520e994065b5d9c8fa83d85f023cf038d11c67e7d710e5dc. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCJPB2481869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8547342a0b910a5a0bb5f2641377383c1052066eecf0c072470024cd6b2fa6c. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/TCJPC2460293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022ffafc43fb0182d5a3b6e54f27eea28d1dda55fbf0b07933cbb09bd8d5fca8. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCJPC2460314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0049e7e0b90cb77d111a9d81cdae5ebfa4ed5f92a30e8b1134ffa975df827f. 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/TCJPJ2505391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c21760227604b44102ad410dee602d918cde8c455747d7da1135d9253acd4e. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T20:58:59Z), 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/TCJPJ2505406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630e96649f30eda54518cf2b4d543979ace388591e9cb39a0fd6b5e1ee79f99b. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCJPJ2505410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcf624cda3a8e3bdf05b4bcd2372de3ee5138ef27043867a3bd411934757532. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCJPJ2505413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96eccf30667cd9ddc5a4a48f22ca235734650fc77746477fbbaab94b70e1c66. 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/TCJPJ2505471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a29201147baf8590798831483748296501b293e5143af4628086a38e639b8a1. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCJPJ2505476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5600484983384a6d2fb745279a6f1c6e9e018a94215b5df423e7f839c781b1. 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/TCJPJ2505478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19359ee1f29eb8d50a9df64a8431d3f924068ef7523276d0eca825c4688342a. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:30:14Z), 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/TCJPJ2505482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5b06da92a7cef634f78991feef7082f92a5d14b1e47f809f7d16d4519d562c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCJPJ2505486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427da6aade5bd9b694294a75e609fdb04968271501d7b9c8452895d859250cca. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TCJPJ2505494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dab85b978bc37ea2067905e486cda9b86debabdf69d75ce028bcf391bccffa3. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:24:42Z), 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/TCJPJ2505497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3841d2960f86e6ed239e5b32fb8ae35d8344238828cd0e2eaba370d5428fcc9c. 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/TCJPJ2505501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722fdf7aacddf54b8b2a6cdd21724fd8f7cbde2ad1e46e0e7545c7c1afca9464. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCJPJ2505503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb6db4d17da95458e8d0e690ba0b9a08c8ae988ce456e14e3a6e95104ab9812. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCJPJ2505594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4d58e1a82b53bc633cd965a907811d5642f6564674ecceba197657c551f18c. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCJPJ2505658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bc13bbadedb653f95700a854702b4a1d45bcf56a6d168dfe1c128a4bfb964f. 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/TCJPJ2505677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639d04bc116e9120c4167713a5a7cc812eb0b4d282e0cb73165f502fb512c712. 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/QT66J2596264.