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 0x34a4d30166c2004cb99d5404714120114999e7e39fcd87612269f67fc1ae4d5a. 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/6c956346-6e0c-42f1-af01-cd91ad223ba0.json and https://artists.proofprofile.net/proofs/artist/6c956346-6e0c-42f1-af01-cd91ad223ba0.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 0x52b83ecea5a7de255d9cdafa7f744d7ac97ba17069c5ff71c733a80f8aad68bd. 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/QZMHP2341391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6eea3ad17cfe061458b67f82be4aa41aeda16ed2a168bd12ac9fb43b1e7d10. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZS652370966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3277ed2b55ebc32113b087b962810cf5515a24b9d8eb1e01f22873e03b94c55e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZMHL2353621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecb79a43cce27a74a606f64da3295b54f999850f0fe069569c2840f0f818324. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZMHP2319563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8070bab3b3c5ba1292cdaf79486ab3e6143124109ed73a2bae42944d391ab194. 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/QZMHK2511560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3634a267647f2802e901d0087c4cb46edf40916e9b1311341b7f3bafc47d05bf. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZS652407483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013de7a1dedf1a7e495f7abd2395a016a7cab167df3263b36865266fe190fbab. 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/QZMHK2403805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3247eee8fa822de5aa186e7d5116d8b5c316942805c8aa89dbadcbcb2040f893. 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/QZPLS2256113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7c1d0c7d07eebf004049c2aedcb5796e3ee40a9c5a10711c30b69b19d3a207. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZS662297036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8255f40e4b3fe4327c0f515b25bcef6af7d2bdbf06aa02c130e6c3c8a629ec5. 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/QZS652247470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6de0a6c1613caa1a82b1a02f3193b61aad7cc7c2259846d9d15fece084cf3a6. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QZS672299390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313f423a08298a0d0e94e4d02cbc8df52ee1a568da2b3f144bee488ab3bf410e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMHK2249959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a96a6faaa1cd9103957cbe1b9b88d7c0d6732eb70338a199bf03a021feb2e71. 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/SE5BU2557599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6594db160dd0cd68af3761de54799a65943b75d0865d9a20a7a251156c0b13ce. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZLBC2503549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067bff2f7699e48c205e3afbece0399bb3da2eb78d15f223fcad357a71a71cac. 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/SE6XW2429463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4396e394a52bf91dad19dc4bdc08b3a66d45b2f99591006afdc34a0d22593c6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZLBC2502313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d05b7001f48c4e3fa8dc6ddbab74c693e8cf1952503fdb2ea46e1319014648. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SE6XW2428103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7804027adf535f7745295cd24b2d5fd4d9551e451b739add07cd15fb08a5992d. 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/SE6SA2424990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8b90f527a1fd219289dbc18c43bc1f81b99ea3f1d281a875b5d1b689178f13. 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/SE6SA2422680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6384598a60042f2fe463c03a51e79046767820a19af76144301c467caa61f2a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/SE6SA2424991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6eea3ad17cfe061458b67f82be4aa41aeda16ed2a168bd12ac9fb43b1e7d10. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZS652370966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6571eaa07353b8d7aa2e8b625b57e9402e7da69716a4c132a0d053d06dc83f7. 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/SE6SA2424992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b80fe696236099204a7fb6eeef86fc5db438c15770c4f889bf28c3573b3c82f. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T16:29:32Z), 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/SE6SA2424993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8b90f527a1fd219289dbc18c43bc1f81b99ea3f1d281a875b5d1b689178f13. 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/SE6SA2422680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0879986a681766a75d2925f535066d2309552da158eaba0cbc4abebcb01aac3c. 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/DGA0R2411441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28977a14624ded51037c3bda7c8d91f27433e48092f704af1707d24e0c011468. 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/QZTBA2442437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd806aff07572578ae67e2979f5d795a52c534d5c3e23e87b6da73e465b5d4f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZLBC2417806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f648f715170a6d3c7d723787576344abce5e60661e501757a18bd00a514fd5. 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/QZTAW2492499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9d04d0a50077c6861932ced71a758bf6055dad3ddcbf0f4a9bdfc81cfb7bff. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZLBC2413988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83244d6c368c4bcd2981be8cca6a44e2210b36efad40a4a00abe2cadfcb37e40. 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/QZLBC2411260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea68f17c68930340d5542473c496f29cf99d8e4ca15878dd1d52a09bba6a2ac. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZLBC2405794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d238a55d12f322e79ff99372d0db8ff110806a54d85f454cf6ba4299aced98. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZLBC2403781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7bfcc4860c7c63f06743a4c9dde216aa2b12aa65eaeefd2163b3484241c752. 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/QZLBC2401033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e107f8bfaf739a31ddc9b782300a2f0eeed623aac2a6bb75457b452fa1bbb5a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNWW2345389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecb79a43cce27a74a606f64da3295b54f999850f0fe069569c2840f0f818324. 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/QZMHP2319563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3277ed2b55ebc32113b087b962810cf5515a24b9d8eb1e01f22873e03b94c55e. 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/QZMHL2353621.