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 0xb1fcece9bc263700c0209cb1ec411cae7e629251bff8cc884675dd031369a783. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8fbaee10-801e-4e89-95d8-3ca887a7fc03.json and https://artists.proofprofile.net/proofs/artist/8fbaee10-801e-4e89-95d8-3ca887a7fc03.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 0x8b5124b757cf86268634b0cb2f0cf708cd109358666eb6d6164cbc687a88cd86. 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/FRX452124415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9722ce481d0d8d6469ed0a7d67476794411eb2e49a0f3cd4152c4b7b913a8137. 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/FRX452124416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4362dc1f8342512d7b5ac51f8f7cbecd80a3aba83e9c4617a483ea362fb791. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/FRX872308862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8516ee19c47d1dc3ef7fad88e59c5417d29a22781b4527c33b165d760fdf4518. 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/FRX282146514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b33c063ef93b1095e2fe5f46fb2824634bd7b4ac5b877d5e410d84a0045049. 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/IDUM72200255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b6b3004211866fac1864a889990602a6d252de4beadcc0070e9fce24898644. 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/FR2X42386213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3d884ab994b2fbf516bd291765aac86c65a388256608bb7a072c9b1a6a0a88. 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/FRX872308863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88358317f40675bdcad14e6cb23e877657435d6188e43a97f1357b760948ce9d. 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/FRX452323054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e61b80c1c5d91098852c8d4e56247ad86d8d6d7b90f941690340f75f0e33c07. 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/FRX872308865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b33c063ef93b1095e2fe5f46fb2824634bd7b4ac5b877d5e410d84a0045049. 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/IDUM72200255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffd6253ca71e955d55d5ca3ed75dcee9ff0348b96cdfb5c04ee423144877957. 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/FRX872102709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8516ee19c47d1dc3ef7fad88e59c5417d29a22781b4527c33b165d760fdf4518. 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/FRX282146514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7855f09b7d69316f6a6f18201bc841d330e98fbe098267d8d5d0305ca5e89ad7. 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/FR26V2013846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b84b4962e78c4f90c57e484020ec79405a89ed9908c24cd8f4454304afd5f1. 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/FR26V2013849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d40fb4ea304774a73eeb2b250801d0065111b7a2229da3f38d3223d07b0ebcb. 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/FR26V2013851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef2c39903c5f49147d48045d1b71811eb6b9ffb2f346831acb0d3ba34af2c83. 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/FR26V2013868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412ab337a8d7e0a6fcba2596af87f16cdd016188fb1660dc920a72a25886c29f. 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/FRX872007054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9ca82f348212ff1cb98905f4ba54d9fb5f6b888c8b3a668b7ca26453d86910. 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/FR96X2070520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa42f62412ce5dc0e2537a08386d237cce8abf9a4382bcaa473192737348e60. 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/FRX201986838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb129c1ecdb0a6802d47021c204569de60ea9c7057572c8b1f2594b8fd5cb31bc. 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/FR59R1919039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655e78bbdf626cef30c42d954b5470e59417eefead47338c3cabed67bd155b67. 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/FRX281947468.