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 0x9cbeb14ec371153e82f1023f500c616d3b4eba8d30ebb28af6e29b3428c62fc7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b409eb52-ca10-4975-a529-9884911dc723.json and https://artists.proofprofile.net/proofs/artist/b409eb52-ca10-4975-a529-9884911dc723.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 0xef2b7d5eb9491e2e526bc1b4b6c0f2f35c1ed1b27566a84640ea9b25e4da6262. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:47:58Z), 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/FRX452422621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c12a0141f16d7dc01e65c8efb9d81b7a0d02246a424e33fb1bb7a52b7b99019. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/FRX452422636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddf380d426e9d0ea7d7174b45e2163262a30fdb0a39c5c3c28e89fb14c17003. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/DGA0Q2318288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafafcdbd6e164a1ae31864febaf093571162ce15151f185ff7808c23e5c089e7. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GXBAV2414127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1821271aa0aa00155c86a8f0d2912856a361b123ff97f315166b009f492eddf9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GXBAV2430401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea922e219d58977feb73801c1d0717ad6bc0cac2a24632fb79f324d9f65bd086. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SGB502436965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18adc7fa87f0f3a5844b1ce0964c4c70deb1bb1fb6fe2d11496736855d923846. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SGW502422143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26e3c93e21ff5bba5354bb5baf88275467f61a497263d4ac9fa69e7c8cb601e. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/SGW502242935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d2f264ddcc8548bb2cddbf9885fbbaddaf270e082c14c8bcafdceb047b8dbf. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GXBAV2591733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd396c2f89a63cedaaf5a6cc30f9ab4d9c1f7bccc844f790eee9c4456d2c28a7c. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/FR2X42520886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ed8de5ac2a2e63fe96314eb0267f18f245d796271d7a38a251543f2c0cc47f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX282568952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc800ed4b09c8c201d79536f11b64db894655e055cf31023b266eb2f947458ec3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX452551149.