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 0xef8f7a3747482ed26cd0f83b08d34c379597e533a8a1cbc2a5581c5cc4d7d7fa. 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/9fe59710-fb0b-4f20-a16f-3206389f5793.json and https://artists.proofprofile.net/proofs/artist/9fe59710-fb0b-4f20-a16f-3206389f5793.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 0x778d2f150629b8ca8880614faace660aa93907616e165bf8c707e8f60138700f. 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/QZHNB2478399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47ca1600dea85539581f02982ea8660a3408fdae0b1a06f35177c9fc889f1e3. 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/UKXN22461958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef15c9800263cd1f87f3d42b7e903cd2e5806ccea94af11e0920c9af7152639. 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/UKXN22400881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142a454d1cb1b9d0bd5804ba90f4c73cd176cc17c989ccc333bcb6c76c48a629. 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/GBLFP2370927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175c668c0c8e73dab4cbe2707584e8689564a9a266bfc28ca53ae8df4106e311. 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/GBLFP2359429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af9be352d749da3ae6b204bf278e1d91f74a01c247e430367023bef587c96eb. 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/GBLFP2331366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97c7b763be346d05f5722cfa07f79dcdd5233097adc17f46293479a1383da56. 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/UKXN22255913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b91e7c2e5970134b420b48ef982df3502b08ce698836bf2983405d635f00993. 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/GBLFP2240336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c9336d3b9a2a259bb1a2979bf4b4b75c357fdea5e33b3026241f0ea6ed19e2. 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/UKXN22119399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ac9fe92809b0626ac9cfce3f0be40756dc99c5e160ce7f173d065c0c92f06e. 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/GBLFP2240337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162e86ec26babe787f45fb5296fe13e568036f0137a8d9dd591b1bc0e6937418. 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/GBLFP2240338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb36fa9683c15a20e8f621a16b3bbb4a66157146d3f0f7a82f4af88629c50e8. 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/GBLFP2240339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa051299ee69ec565ff0b652a4317e6ddecfbbf7d9a527dccf393271e8df70f63. 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/GBLFP2240340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c9336d3b9a2a259bb1a2979bf4b4b75c357fdea5e33b3026241f0ea6ed19e2. 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/UKXN22119399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1f3869809fa5f997678ce86f61e1d1345839fcc9812fb6f832aeb0f3b0e000. 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/GBMA22148386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a1e22cc3e23857a116eed67d71188493b398f7ad8bd4a7214263561806d956. 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/GBLFP2149741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b4363e3b92d0a716f2fa6d0633deacc479de9fa9a7eb579177b62fa45b6027. 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/UKXN21931818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2664ba6c5042e7092bee0fb0712e4dc6cb73c728ebec2495238517481268add5. 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/UKXN22033443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0327f4d6a1415e59ab62d82dea1f070cfe216bf890e6d6cfd625f379bb7931f4. 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/UKXN21931815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa87372e17c674442ea3d6fda17800cf0cfaf58660f10d81e564be9d5bc2e3e6. 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/UKXN21931820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e187961b2d2e54701ab412fb48ae943b88cde01877820ce420130ecf8b9d46. 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/GBLFP2054346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f9897c03000514626aeaf53550c610437206624cbc01816b92f28e484b98db. 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/UKXN21933484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2664ba6c5042e7092bee0fb0712e4dc6cb73c728ebec2495238517481268add5. 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/UKXN22033443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e187961b2d2e54701ab412fb48ae943b88cde01877820ce420130ecf8b9d46. 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/GBLFP2054346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3820460fd9e550788f5d144a015c6288f3a92175bbc63c3f2c992d17609ca9b8. 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/UKXN22515371.