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 0x5dd484bc8f0dc1c8184be8e04f3f584da74ef90e1241d9649bbf1ecb4748d822. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/edcb765b-23f0-47a5-9266-2bde15fa40d4.json and https://artists.proofprofile.net/proofs/artist/edcb765b-23f0-47a5-9266-2bde15fa40d4.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 0x82c4c8f053271689b5cd66b7342bad6175ca3e77ed76aba1a67b619f9b7685d9. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZHN62133231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ff167631c025276b0e368dedc5856121878895978714129d977d1a975b9294. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DEQ022273105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fd60779cf20f6b1f0823ca641ddd2dbc8851bc156244cf3e876b0a2f7b5e44. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:52:05Z), 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/FRR642201256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3d487e130c7b5285aa8ba70f5da9e902762cf667eec595b6c62f4d346283da. 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/FRR642201253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438711014ca7bc0c29092a4d4c396b2bcc5f49bf3bf2e9763f93bebf2731516f. 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/USANG2241575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438711014ca7bc0c29092a4d4c396b2bcc5f49bf3bf2e9763f93bebf2731516f. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:32:18Z), 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/USANG2241575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa620b955555788c7e9b82d15df88c5654c0ed11a5527470ebd08c3b56763705a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USANG2241577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24b3f4a47abb4bc5e8792e97dd81f46f351629ce96decbdbb6bceb8e5f3ee65. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:55:24Z), 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/DEQ022390425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7463ffd6c32dde896c658fb69bbe72f7b3f4aa782ea525856d43117e44f3f2fe. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/DEQ022390841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4199eb7c9d505d966218ca23435facc455304a19c2f77695d9f0253838701e6b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:32:00Z), 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/DEZC62343431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb658b2c28fd2d8492048edb746ae5e1c48f6dbc4e3913634836139975e25e7. 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/DEQ022382147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ac876387d1cd66ca8c8d19631e321e59ceb68a620f553f1d7c0ea7897fea49. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:31:10Z), 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/DEQ022372193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd796037adbec35e77d085d5e3f9b5f7f39ad41f8239bfa93edc96698f80c38a1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEZC62354194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970e5b3579511dad0c1596841294b0a3e0ec4a60b523b2c535f93f963954b48c. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/CH7812357516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282b522cee27ee749a63868ae2497cbbbc4a47716375906c9a4e3bfcd9bc53e4. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:23:38Z), 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/US3DF2420817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1e3a4479bb91d1b7127c72dc6522a16220855ab09d61cee346036189870913. 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/US3DF2455464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d2316c5c881ba869c7cdbe2a7b4ea7d3d1ba377e5728f3074f06ad5612e83b. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/FRX282477333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f7527717e86a7386dfe9fe7b3649c5482fdf80e1d8ad8164d437ecb421efff. 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/DGA062496522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6d95db99d899865b2da9ce4b4ed80e87ef35225802bedbbc2ac6e11b1e6c42. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR9Z62400804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737972f77aa9299989e695f76d91c6833a61f9a9d51082de9503223b93127dd5. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:47:10Z), 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/USANG2411052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243dc6e99345a6ee6e66966bf846004f2cc7d0396152d3a94b99f8e9fc56b222. 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/FR9Z62400805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c9912558dab0b15e58bd8dbe72edf4bf848d2aa3e792e8ec53bcc964fc57cc. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/DEZC62464770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6547af8717d4fcb4ee588c4671043f04bbf6315ae844b0311bfef43152801ba6. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/FR9Z62500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa111292232db7d73679e56bad572eb8120fd60b1f3674d929445b39a94a0b7ed. 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/FR9Z62500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8311cca7735eb5599ee90f8b7575c90639f66a77962baa26ddcaab46332227. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:53:32Z), 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/FR59R2521716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe831a9efd057ec5dc53ed36a7cbbc85e1b7787aa7648a25b3a046f1bcf21e247. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/US3DF2539228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedde315cc57d69b5d8f3ecabc7f8c07f1a2f0362dd33dd3a3d4c6f83e180d0fa. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CH7812541815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ec4c010e7f6657f521334ba40a30d4ed75c66cdd8c3453291c70dc98050876. 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/DEZC62359627.