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 0xfe0ffe43f61277e63720f22340711fe59ae614c5c7c5d0f7b3bfcf09f9cc514b. 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/5d9b2b06-192c-4fa1-95f3-a7d182381f35.json and https://artists.proofprofile.net/proofs/artist/5d9b2b06-192c-4fa1-95f3-a7d182381f35.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 0x5f4279952bab51614e6d9ac16c775b167e732fa913523e44e70214c0f2a05fc8. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:29:13Z), 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/FRX452095645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aad1f80652ae68d12167f2dbb2641d2070e6d7c3ee708fd65605313d9b0a22c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRX201920875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ddfb1fa4feecab6406ea60939a82ff7b17fe78471b04c95fa00d3bf5185bab. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/RUA1D2050127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb693adabc970013431641a7261558ad6ac34f2144e87e27574d4e3a32be1bedb. 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/RUA1D2121710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d14da352bf09669d63cd0fc333fefa9b5b34ee7b3d4a95187784a6dc750cc37. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX452095520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b92bd23e3203a2e9f66b736c23ecebede182a84f120fc1a023dff094d5232c. 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/RUA1D2317176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7db549bd61dca9efb2dc864e008c07171994b2f8125b50592e7c1266adf6a2. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:08:59Z), 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/RUA1D2468046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf78e12c36301a8431386c4ab9e9aaafd1e5fe05398726b2122ced67252d3fa. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:28:40Z), 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/RUAH62401918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90870b3fdda2e50e04b28c1e1354def580f3ab5ce932331e685845a25146816b. 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/RUAH62420671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cfece6cd19b7f258246ac43b9daa4ed888297322d699a69b46a9f2b38cd8bb. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/RUAH62421937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdb0354ea06cbd9fde97a71decb549e3b0ad644c4978de1bbb9ffab17093539. 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/RUAGW2501943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cecc5b8b7f3e3fbab016d2292bf94a01a5bfce1fa7ac4ca4be58ae6398d39a2. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/RUAGT2448768.