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 0x4156aa7eb588dec5a7dde4e066fba320fcfa210ec11f0fb9027164a28ac009f6. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c11dd32-b24f-4122-ab1b-122aae778826.json and https://artists.proofprofile.net/proofs/artist/5c11dd32-b24f-4122-ab1b-122aae778826.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 0x0b22534545f136fb848464cfc7c0a6db676cffa20f8436b773757e72bbc1ce84. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:47:44Z), 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/TCAJU2515886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb6cf1f961a67c036120154abfc0102faec10dc32f4d3ac3c3e66a2c5c25f33. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAJW2505255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4632e93089b260ed31300858b61268c08965722dc6ae3876fe0772a22bf24b9f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCAJW2505258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295cfdb011fa17ae7c3294dab4df53b360a47c9d85c1556cc57615bedc1ef383. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCAJW2505659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0144c30b3a2ee1a5fb9bcdbba0eba42dc6f692f430b7a180ef03347698d5786f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCAJW2505668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f3179036c37a13550bacbdf67699d12ff1aa625c61d2aead86ec7ccec3d823. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/TCAJW2505669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce21a86846e0a7cbc389c955ecb4d2ce30e7ecf1cdb13fed2b80a00356d2fbb. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:10:47Z), 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/TCAJW2505671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997977d55df8937236e99437aad242471f918b6c8ee13e8e249d6c2d4d378e62. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/TCAJW2505674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0b7de4e6e3b64a49045cc1aa4c65e4e19eb5b6459aeeac371e5c51586ceb48. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJW2505680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29a552fcf3a927812de0107dbaa241f47bf2034f13052de299585023f7afa10. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJW2505683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767928e0257642a55b60040ed5ce51500edfe8dbc166ffa93aa1fa7c9b2cd17f. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:05:26Z), 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/TCAJW2505686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7f21d82cbf6be29147abda8cac5a959d491c639d98b71666c51c9347a868df. 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/TCAJW2505691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3502daf68be88b5828a0f33634459d61608cad0227228df4cb67264e48d2f632. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:31:34Z), 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/TCAJW2505696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ccc86a245e179c047941477f663b292b596f98fc544e709a15f8f22792c153c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCAJW2572468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e61572a192ed4686ed420d991116ce7334a9989a6446d830c36d0622f2b98a. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:09:51Z), 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/TCAJW2572470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e5b2341daa18e709087a50f5b4170859353f8aafba10ee9b454cd6737f0926. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAJW2572471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a2078d4116e3384771b5f8a3282033dea12285ed7043bec5b63c9536f368b8. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:12:04Z), 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/TCAJW2572474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ec99418d3fa54837791898a9ad46545062660c981e07fd7cc9793a286bd0a8. 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/TCAJW2572476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c138f206ca3cb17a37db2884059b2e05f684e1393258be09bde9aed66e3c4c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAJW2572477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e95013a1132b7fb8a37fdf285b0227773743483d8c21e8cb0bd1c9758764616. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAJW2572480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702f7aaa7943aff6554e62f41050cc4d2fefd57cc6acac4e93b0dd0ba975ab2c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJW2572484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61c7e1699c552c99710cdf8f1f7c0d15ae2076a7a717c308d93eb18cb214fb5. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/TCAJW2572488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44ea2db7435cfcc0ef5d3710ecd144e4d30fe60fe5422350efd1b1216479d63. 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/TCAJW2572489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573ecbc2a8942b1292e4ac377f87bee1f6f97ac347c74f101d2fd9208e16f4f7. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAJW2572491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8468c16382468e002a1cf0b85212e851d307930b5cdf3a4b601d19929b47d27a. 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/TCAJW2572493.