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 0xb571e3029313a695cebe51b2600c7b8bc42564a1dc0c4efdc0e00a208d4c2831. 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/5dc66b29-cf52-4674-bc37-5572d04598f8.json and https://artists.proofprofile.net/proofs/artist/5dc66b29-cf52-4674-bc37-5572d04598f8.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 0x917591f8ca72c19d8fa0cca6aba76ca2030fcb2bdd7bf8c79a352c16b51f7d2c. 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/QZK3Q2400258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1087b5fdf927de30434a9fe16080ef53522328a9f5d913226adf417af5457a3b. 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/QZK3Q2400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd4519c0241bc0d7d2478f65fdfbdd2a790a66eb324436f9d52711207f367be. 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/QZK3Q2400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb314f34adffc7c480e0167210bb6c4bb755b53cc82198cdb25046397addda32a. 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/QZK3Q2400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f0d2981987ca640722ff4c17f2a2367a1c9c43ce841695fd038abc41b76714. 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/QZK3Q2400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5391b1109e09162092547d91eab7ad3db3bda1e3d8db39e62959a22d27deff58. 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/QZK3Q2400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24df6c123a071ba7fe6d10a93b72a11836c48a0502b5e40d245a4377b299e67c. 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/QZK3Q2400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98446a588adff7f1bfc2a99d15a2dc14b966c6f5d083ff075804018aec901de. 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/QZK3Q2400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73dc5c39b3cadd92c908bee5afac4c9a7b26a4924d28a4cd50774ed21b9dc46b. 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/QZK3Q2400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1632a7631612188bd06cb27cff779c2ffe7f2fc7e57bc267af0bb12d6542f8b0. 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/QZK3Q2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c7c3fe11b65e1a46075a715f3d20b75eee82df7fcea1410ca5ef7d83d778cf. 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/QZK3Q2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84e607bce3ee8b4486a1047fef84de4e8f66eb49f9a8cf367649109a289081a. 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/QZK3Q2300598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe732274e6ab4bc649f973d6d8d47f648a632a448376b7c3bc9314e36ceb3cce0. 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/QZK3Q2300597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6410e7829924eb36a724037db5c17f321d421bff33bd108f447111fc248439. 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/QZK3Q2300540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d7b23f20e9de4c5a7649dcd38a34dfff962c0df97a2c31476f6501a0f7ad14. 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/TCAHM2397374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5048929fa4e77c49c388e06327ac90f3cb42215be725b5078ba8d1d9a4dcc1. 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/TCAHL2332771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abe416a43caaed230d3000fde28e75e63eb6535873cb098cad9893c376a5c5e. 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/TCAHK2345026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23fb51d886252263a7868a079d74192cc2331da009f99f2d22b36e5aecd620a. 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/TCAHI2357005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2528f87ed5742c9b6d9641eccd7e99ff468d9ed22e32ed60e189c3d7982f8e3. 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/TCAHI2356875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2388ce8d0baae7d266aabd429fd24cf2d4156534b3e35c7ac0c29b46b6e23870. 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/TCAHD2354758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b37662a297ed27f9f878f5512aa2f87a16b0e200370e2818254913b958b0da8. 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/TCAHC2375759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdd31fe7b93b5dea644445eb1dc97bdaac9ca3be58761151d03924085f62b27. 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/TCAHB2381023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad6713f912efae81a8e8001b75eaa85a7d69dee6497c4c38c1f40c3bedf9b4a. 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/TCAHA2360341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892fc6da8a32c0742ca2649c55b722f17ec31bca5bc174f97cf8902af8b1e292. 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/TCAGZ2392596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bce16e494f509b3d6e4ab87205ed03228265953c47215d6492fb2f795cdada9. 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/TCAGY2348166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5743f1d0e4adb1bb2be25880bbd2739e448f2ce2beba2ab44df548decb276150. 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/TCAGX2369192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dc807568d7dc8a4f9ce7a24c6bf4195cbd80773514cd700e5dea02fc70b2d4. 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/TCAGX2369147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77177da6a3059fe0df98ec1458f15e1067b7f62a912e38cdfaca41b58271ea1a. 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/TCAGU2321370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d98482b15189f435eb35bfa686d0ffeb1cbf40a479a3039499e8a20a557162. 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/TCAGS2227053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45bec421eb8cc0fd088c88b149e8d1465abc3b368d8eee889afe2a20ee1fe6b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAGQ2264735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38f3f49a73e83c7d7b421197296fa9b56c6662e3ef96439b19178e763d9510f. 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/TCAGQ2204559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d771c96f76ae48211250b930f676bd351a8b6828dbee39b12862bf1a5a6c44f. 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/TCAGO2235268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b0e3eee95a3deb03987bf1dae346b0d8ee3b1cbacdad65a8d6276268bc9a2d. 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/TCAGN2222871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93e82607046ff87870b63d3df2f64c134e7a8ba6587d8f1ced338bfb45452f9. 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/TCAGJ2252097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f001ef8c4fb398691a361ead30e0372b8c45327757048ebe1b99e486cf859d4. 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/TCAGK2280970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c845ccd4c2af5205e6c655758771aafa15414375d11b3dc51802ad4b80c4cd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAGJ2271181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6a3daaf3bf3e26dcab442f165c8cbea379ac1c7c0ac2a244d0b836ff9b0954. 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/TCAGI2234236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081a4847c3d8a65d42298e2616927d8f2b72ef7605158947b8513fb1c49f2844. 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/TCAGH2242106.