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 0x127e7701f24cd476a86b2e76ef4b7e141609754daf1bec5f781821cf8134f171. 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/3b8cfd77-1ba6-402e-b49f-79068ded3dab.json and https://artists.proofprofile.net/proofs/artist/3b8cfd77-1ba6-402e-b49f-79068ded3dab.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 0xb894f6dfb6987485a53ad5a21c4b479643402025fbeeb62a1668dd6f76d016b1. 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/RUA1D2432988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b2eff2d4b0cd3ebfeae36b215b8e8f45eb5c9135d782bc65c5b28315622a55. 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/DGA092480675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c83c7ee7a85a3d5d9a4e693909b783082f44dedcf384f8663e8f49929db0637. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:18:55Z), 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/FR96X2591077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4de74f3ba6f042c40828b27f5aae7c6afab44332e6634f01d6671a11560bb6. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/FRX282531017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9e95d964c42f9e1cd1305fa1b964a07c3c6ae3227c8a8ff78039bae841ddda. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRX282593346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e826f81402b4ba40075cd06ea2f510cec49bb0bf0a11751852cfef574082b4. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/FRX282593347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358114d161fa5e6baf29c225d35e8dabcf00b3eae65e67722ed1efb26e8efe90. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FRX282593348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae64c866ee707d2622d7e90e3bb4bab50c4d22ff8429673f7a07bfee4ba252f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:02:12Z), 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/FRX282593349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f388f46d8c67735d09ebb9154285c5b93a447409fb3e5f87b7b3e973c423976. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:02:43Z), 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/FRX282593350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cd64b389427b361c12e79e45a9d46f9e8219087f25539dc592db09d0f45299. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:36:30Z), 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/FRX282593351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c83c7ee7a85a3d5d9a4e693909b783082f44dedcf384f8663e8f49929db0637. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FR96X2591077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59fa4591cec57032497a2fab20ee537af20578eb7dce09c1d050a7950429136c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:03:42Z), 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/FRX282593353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66a5b0827fcaabaad8fc4b3ad9ca8b39a1d0f974687494826cc37ce955158e7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FRX282593354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11dfb2f7221f24b59b2d75c5db3ae28f23cb6295b8bf1cad89983b31fa2611ee. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRX282593355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b74b19b4edf125c5980adaeb0ddf8ddbc3ca65c05aef574f05c96b04e25ec7. 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/RUA1D2404064.