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 0xf9567aaf3ea3885368ef3db6137e7be6ccc9bc75e81cad71a6bedec58c713546. 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/3132b7f7-b93f-45cc-96e8-43b9098ac6d2.json and https://artists.proofprofile.net/proofs/artist/3132b7f7-b93f-45cc-96e8-43b9098ac6d2.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 0xa3181eafe405ec6adb3a1a75a08ddc78a64aa36850fd91d8967ab6a10d66c2af. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCAHJ2375426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6678920cd28519174f1bfc8781ea89cf2c4b4c10cc2299fef22233e1a125aff1. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:33:41Z), 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/TCAHK2389358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb276c855a486bb85804b584600d9a804be6a1a6bb8062e52453177cd7a78ef88. 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/TCAHK2396858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ae011d46b13271dea80602fc4d413713d5e0f4242b7853f380ffec451b1470. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAHL2325132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742c621db103f684c73a553d5a0559d97ffe40c133b41b6ce653879c8960dacf. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAHL2359332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94c39a8e54eb57bc8bbf2f9b18ba80e99b3f85836d575ef81cb21d1f02767d2. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAHL2359346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066d41806ec1a9ca3780952978a27f0e587470fc758226196c7599cd38a13a7c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:18:14Z), 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/TCAHL2359352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1fc2a79bda462735a2bf2048d3491ecab71859d1ed6c171caf21866824ac0c. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/TCAHL2385923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e10d839fd9fd8b379415ebc6b6956e8d4cf6c1ce55ebebb35a54d73c88dad8f. 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/TCAHM2310802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ab85f86d0021f1ca0342145508b395e934ed1493e97aebb048fce84c62b174. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:29:15Z), 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/TCAHM2345574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e6b423e71834386e3125079105c02f38711e11bd08b80ad3504eb5c8a8219e. 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/TCAHM2345586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8c3906542d77f6100a311dcd0bf24fa7f1aaa829d4f84d89e752396eefad70. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T13:00:36Z), 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/TCAHM2345594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6972767db9d1030756f3e7ab41d2dbabd978fe67256f083580d4f9ea15399366. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:27:02Z), 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/TCAHO2328200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35968c3cefb43dfd2de4a75040150583fbbd12ee622fae74a22e1f3cebed01bc. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAHO2390849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08af9b6f88594eb8b78eb0735e711479541b82b098cd6c866d48ebf8b1399d46. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/TCAHP2377885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ebc8643f6e5229502e00fa12cf431effbadf952ac67c8907d24ed9b867b787. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:51:39Z), 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/TCAHQ2382324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9d910505ec2ef7f289a9c0c81c2d612c54b1d1694164b5a0fb372d6ea9218b. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAHR2363496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1f047ae5e789f0195c2491f27eee98fdac4ccd74d457c1101b4b9eec92f3fc. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:29:34Z), 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/TCAHT2458956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177b05f30b8960fc1a354bf4f7668c2f692619017d32630af5cb959b0ddc247e. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/TCAHT2468042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b914d91d75de731054c50db6c9ef909cd70f223e611f89c561bc9c0d72bf76. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCAHU2432154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbf783a651e7abb5d8b6ad8465477debbf98d24d48b4e5f4e7f4055e37c472e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/TCAHU2445728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be6798afb6c896d93ddfb85fc7b2d966f673692aeb742ea7b8e9a7c9daf4527. 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/TCAHU2480676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69dbda539c714e6c3ab27a8fec9ce43d9ee2f2eaa2e90f4f55519563e0f4c5a. 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/TCAHW2403274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6a5621ceed286a94eb58d7a27b7b49a847104d649864aa71a98e456af3820f. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:33:32Z), 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/TCAHX2410379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22e71279c03eb6bc2f4cd76e7b6a2762e5209b9da2b7eef8018e07cd18ff832. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAHX2410397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3dc4dc725bf081a5a790d3d7ced05a464165c9e5e2bf5b8cbc4d671273f1b7. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/TCAHX2410401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5792f27c922936e8a5dea585788c7030e28a3eb71843db45577a5a21694a6d00. 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/TCAHY2477371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6060589729257186a686a6e9b25040047021255a8186020e67d001633f9f64d9. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:01:33Z), 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/TCAIA2411451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b6b04cf7c4c2cbe18b5bdde83c60ed695ec523549c581aba505962f7ff5415. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:54:03Z), 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/TCAIA2491009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac35b66f877829e0b5cebd6b165857f29f5e4602180a256910f879cd6583038e. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/TCAIC2477634.