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 0x118da4e6a5a889b25bae762f3c145ee521c7a6dd2e1ebcaba226b79a94b27609. 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/5e092ea5-e5e1-4259-abb0-08ea6f4ba3a4.json and https://artists.proofprofile.net/proofs/artist/5e092ea5-e5e1-4259-abb0-08ea6f4ba3a4.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 0xd699f83e307f593aa5eb80952830f98440c6582677767487e07698ea5a141f6d. 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/SEVQF2200301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cbfcb973d49a2e99cba69fd92870c237e7e72668403c516e1014fe8e90941a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SEVQF2200302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cfe0cb20590b844abb37be80839ec9ad0e72638c1c0e9a8dbe0b3fef91dcdb. 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/SEVQF2300705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58b3acad409d0ba3fd108117784a5812419a0c93240efc585d879217b717d16. 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/SEVQF2300708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cfebd15f8f9fc128f4f882734706e53c041f16b30432b34df85c6e73abbb2e. 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/SE6XW2328654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cef7604d91eaba22fab5a01e4c436224a77c4f3495df728ee169addb1a67c37. 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/SEVQF2300701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8f055b85ccf630d46a1b479bef4b7598d17b022ce225bb7c194c795ce438e1. 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/SEVQF2000506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159f60620c8185b35655bf8c8a85a2c1e8c2e1a109410852f4bd7e65dc4d0fdc. 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/SEVQF2000505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cd128830d8ac72c93c159e83584bf757cdd3718764c9333366d87dc72dbbd6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SEVQF2000501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc076a636af19742aa8d9c98c5bb04e163fc0b2cb04b012e2454ce7e835ed579. 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/SEVQF2000502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4969b710f40a50cb0e925c112e9aec79dc7716f6973cd0c0e4632536fe0e2710. 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/SEVQF2000509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0453c0407be8874385bfabf21e7413a3ddb5640b44702c17e33f5f18224cc0ec. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SEVQF2000504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb27dabf34a5c0e0703df04461a1071c34319691e4864f8e6f39a68ad010eb8c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SEVQF2000507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb716ea08666dad15d828328d7fc01d3d3284ae0e58fc73ae1cec48a50ee2729d. 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/SEVQF1900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfa6c0ef207f301ae081ce95aa6c8e503f88053e1140d068f5b0a2154b39093. 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/SEVQF1900106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cc1123e885a33c31191fb22ba140061ac8500e270aeb3a14e4ca6a82e93db1. 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/SEVQF1900109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed906c08579600108fef23edceab824a6f5a19d4c2f2c0cbe067a9a2049d283. 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/SEVQF1900110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ed3a9647ab8bd88b5da39587e1d63929b97aa69cf92afbd2c7964a8d503a27. 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/SE6I32432020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9728de02449a4e5721cef38e47a611643c9487bf8a09f32d30c255fce7fea6. 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/SE6I32431145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b2ec977db301496b0f8bddb1e0f1c72eba594db7df6debcade230a98e3afeb. 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/SEVQF2400301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b3c6f0c88472f22011e7b3de534ef268c6bbddba98ea87b3a61f0751fba9bd. 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/SE6QE2219227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b797e7b1196628e4382b1e6e6a4bbf1ee48a1b655791ac849cc27158e1b4a36. 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/SEVQF2200303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cbfcb973d49a2e99cba69fd92870c237e7e72668403c516e1014fe8e90941a. 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/SEVQF2200302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce81462f04f2cffe1c55b07ac63b9d4ec9c50bb88ab755f3bba33e9e3f5f5814. 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/SEVQF2100701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62edc837a53212e0cdc7f77ddc59141aedbfae72dea94e53a48bf52f4d47b391. 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/SEVQF2100204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb000e5cb05a203e3be80f64c8e5e92c5aed4c17a21b36237ab4fff91e8d0596. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/SEVQF2100202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8df0fd8f5a33c52d200b7bf298f1123b83cf9191b3e6817c859769615c395fb. 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/SEBGA2001317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c796c0b023eed92a40b99878543a7d5494515b887c686dc45da1cdd683d2d8. 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/SE6QE2037025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721109bf9fe72f156ddff5153f9fe99407543a0bb280f9523ac9eb98aaa6c31b. 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/SE6QE2010339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8f055b85ccf630d46a1b479bef4b7598d17b022ce225bb7c194c795ce438e1. 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/SEVQF2000506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159f60620c8185b35655bf8c8a85a2c1e8c2e1a109410852f4bd7e65dc4d0fdc. 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/SEVQF2000505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0453c0407be8874385bfabf21e7413a3ddb5640b44702c17e33f5f18224cc0ec. 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/SEVQF2000504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1478908295bb4cc7119a852aed74d648217c60a15de915a24d357d7631deaf1. 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/SE6I32018895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc076a636af19742aa8d9c98c5bb04e163fc0b2cb04b012e2454ce7e835ed579. 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/SEVQF2000502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cd128830d8ac72c93c159e83584bf757cdd3718764c9333366d87dc72dbbd6. 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/SEVQF2000501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6c86db0b8416c6ca1d7fb1dfa94341bf51e246cc57282c772eaf612b4fc51d. 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/SE6A91811551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411de284898c600d448589216969d09f2e2e8886287b9b440dbc77a647e9131f. 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/SEBGA1700183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c84173e8252ae2ba42a230920677c280534c085580c1727f017d0cfae2d1e0. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SEUM71800230.