1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x22d610412989167362394d6198917ddfe32cd1472955dbf542e2e01d9a8c50bd. 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/545a21d7-f4c4-4e9b-90f4-8d742632605c.json and https://artists.proofprofile.net/proofs/artist/545a21d7-f4c4-4e9b-90f4-8d742632605c.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 → block OTSBitcoinBlock must exist at that height 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 0xed54f1128a2e6671c42fccedc9b09c2e5df836eeb98c6c62943cdafe257e4753. 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/US4KC1028201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd59ebd6027f9304c498907d98870e890a7306c2ed1f09f880189138fa623d2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US4KC1028202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb51e5bc6e08308e4224a4bd51ac0bc7c59fa6f63047cb2514272f46376e72c. 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/US4KC1028203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6deb77d695e277b5059ceb5f79e039c66cf8493224a77fe46dcb93dec29f78. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US4KC1028204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385795147ad8314b5c3df6eb689f3c5f9c72ba9285e16fd8a3ce30a7e44b6bab. 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/US4KC1028205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa102c6621c6da0693ebf35989127b477c86d4944b1a8e093a5ddb0c567f961af. 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/US4KC1028206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdd28fd7bf828536c01d85fb8a8ed60818feb5b6e02915083612ba6fee50959. 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/US4KC1028207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6968c629d06c6fa23969226f17030da11d5a8900d6bf3ba41df784fe455d9a. 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/US4KC1028208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe032ddace9e84a78e104429bb605722f7e1f8d8422be3b423b2ed9a57f9ec5c6. 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/US4KC1028209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc486a724203e196c7278af046f92d75d8977b811ebd4cb429bc0a4a4ea24c263. 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/US4KC1028210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f8c52904cc31e9115e6dc396e997d3dcd90b4944acf693e0192da67d8bf19b. 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/US4KC2433501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18485fe02b3e4dc5bbfcb25f5d830d9ddde88bf72d4c09008b6a7dc5c01c0360. 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/US4KC2433502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dd232893aefe0d7e72a412b17ef2a341f9da00c7f71dcca893ace7cc0a12f9. 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/US4KC2433503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b0b4bb6a519f75335e5080660e9230f51f0456853bf95342e1b4bf40c02740. 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/US4KC2433504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e666a0245fb70f80f73d5398ef0ed65bf86206bd9f8366fe3bfaecd14a9062. 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/US4KC2433505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3a2a6a1c0b28c754570c040c55abc7e6d5a3d5856fe512094382792bf7a987. 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/US4KC2433506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebe365bf27d7b1f66bbbc05861e2ee9d06b8fa67afc986df2147c83f00a122b. 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/US4KC2433507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff845a986fe4fc25a1a381ad4cb2b96ad84ac35bf95655a25e40e796bf76668. 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/US4KC2433508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80b7fb23016d1211610d7e89e57a1f0699d1159d28e4c2b25ac336d10fbbfe5. 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/US4KC2433509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca26101588cf270f7ca9ee5e641c4bcce261f52c2c30c088ce3b0b0a484f58b. 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/US4KC2433401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103975bc7a8440254de1f21fcae2efc0faae0a4903639ef98ced05315eccddbb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US4KC2433402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0339145e094e00d57c2cadb42bf440c73573032087a1d819fcbd78bd24949c0. 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/US4KC2433403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515c5c90c768b90ab56dd631099534a4aec831d1d4511efb47301eff096164b1. 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/US4KC2433404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2c485f69fd510ac2c07084606160e077b7052c8411c4c440c954a0d0c07eb1. 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/US4KC2433405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba8482ebf2e09a433f7c1d97856107de204c94f586d07dc27a29452c635cda9. 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/US4KC2433406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b916af1f0504a0ad7183ec6d4bc0d07ace53b1d76cb2b11aa1bae6cfddff34d. 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/US4KC2433407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9f3925218c0699ec44178f286dd9c157f7d7640a9aa2ef92d38beb96fa5f47. 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/US4KC2433408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6599b7d82459f1d7feb5bb876b4255c7e232ef1f0afaa41cb8116257716b8e89. 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/US4KC2433409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874d2c74c7b0ed199cd426cd3eb08e992c728e77d366a08c4c0d79dd7abf56e5. 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/US4KC2433410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12cfe0a23101782a01e8ab64b01243028777f5de13b20046d05ae76aedb6894c. 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/US4KC2433411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a619550e5635dbda8caa9710210f3087513cfe7cdeb70fb4fe17a35cfeb180. 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/US4KC2433412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29671c1eb8d037605c2dfc83a9b333abfd7398b167cac4e7dc1d05bdd15ae2a2. 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/US4KC2433413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8c4eea3d32695d06477f8b9121015a0786682ccb91d8edddec8c5d8c19ad12. 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/US4KC2433414.