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 0xb5d569ff8e46cef611e50aa9fdf478c4b78c9e651ec163df41137c74e5689054. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a31ac8cb-9864-4f30-8d53-26ce581c948f.json and https://artists.proofprofile.net/proofs/artist/a31ac8cb-9864-4f30-8d53-26ce581c948f.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 0x3b5071c2b00a16886de6496949ee49e91065e42f27e79ab563ed451a2249a164. 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/US5UL1329411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0090d04bf6884d2a15416c0895bd03e49f89cf4e0687f6b03d0ec591a6873c2. 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/US5UL0729444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4e9cd7877a14aee35e5ef5a65c06eac8b39c1a584ffbb147598ebbaa87ae88. 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/US5UL1216448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487045894d1c858dfdc45e857900747c9be992d38a63d911ea9830db7ef06ef8. 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/US5UL1003460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353e524907050a2c7447b3b9c7a62931c59c9ba387f50181fcfe44219a759c4a. 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/US5UL1310016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f898faab8881ab2bb496fffa1a9e92019dbe5982c518e99a3e2dff284c2afb. 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/US5UL1145959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475f77753e98e690017b27160db8104981423b50fb6d96182e6145c13ca56e61. 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/US5UL1442781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb6a8701199d95840531e4c5232ee9c2a3ebf65c418d0606cdd33dceb0c0744. 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/US5UL1216586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034eea2442640039e735282ad6b2bce9e277aff28b7d70136ad38dbfa7690efc. 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/USY2F1200905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7679b5ef50c4b06399e59267ab1df6f9c5a262aad8561f12932a2b3b5a0a8a. 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/US5UL1307085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d7e126042ddcfff8719fec49c2db3028e1afd1843f130ba874676e41652877. 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/US5UL1245972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c66afb54832245c63d67062e5f108ae96745338384e8f3266ca821e27b7841. 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/US5UL0668772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6bb2d72eea73630f3b052f44bc495213163cfb516870b4b895befb54144394. 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/US5UL1128699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39375b0a6c75db6c613601962a67646decc16ad7d757b2d2fe7726fdb86d70e. 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/US5UL1435131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51080debb33bc92b82d61db1a4b39434db07128723ff310507d291c37fe24792. 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/US5UL1346125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d7084bcb7f200729be3709ddd1b3cce9d79ab2bfe0822b876c56182994cc4c. 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/US5UL1205841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4dab9124c6a77e1af63cd604f19da44acd1187959ea54ff26118483aa4014f. 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/US5UL1502371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5744e886a6cf9ae3afa5e69e6ae7d7f42006d7bf533e907caa62012a8333a4. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/US5UL0907335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf990119ec4b348dc2dc67d212cc9bd9061d40f1f96171edb94cccaccd270e247. 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/US5UL0722552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6c3ce077b10f82c56f49f8938598e357eb1ee4472386f858a8a927ef957dfe. 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/US5UL1042660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb184ef4118f4d7cd78267f79391d0ec5c90ae79f0e1bd0bb5b131760e5f79bef. 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/US5UL1227815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2b6f62b6a99d859aff9f1ff63883696b0c099689aefdd450266e71015d942c. 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/US5UL1342303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c66afb54832245c63d67062e5f108ae96745338384e8f3266ca821e27b7841. 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/US5UL0668772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a75a9dc10b01d3b84d977efa271138588deef4f53a099908e23ba2a70b6674. 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/US5UL1504307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6c71636f5cb76ffaa442054561f7c5a7197500aa4011f72b03b7cd5b3493c5. 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/US5UL1108275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf801b41fb673c3edefb0b510d28b4a2c549192574ecad085b28d9aadd73004e. Chain 2 (Bitcoin): anchored in block 957212 (2026-07-08T18:33:44Z), 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/GBE8N1000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345cca5d555bcc9d034f3f94b23efd0e59f3022434bffe1332e8aa5a338e020f. 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/USHM20319750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d7e126042ddcfff8719fec49c2db3028e1afd1843f130ba874676e41652877. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/US5UL1245972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b2a11e84cf10ff26d509cd2d64af92845d20bc992d6c1bf83edd0fddd936cc. 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/US5UL1042236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc45def6186af23f208dd243905ca0d0b76416b8bbd470ba9023192b6307e21. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:56:07Z), 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/US5UL1426664.