1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x28309bd7e98a7bd33949ba4ef6907c3e29dfff4bf4d683f94ac5fc9c9770e7f3. 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/f9fff45e-facc-44cf-8b26-d48b909f7676.json and https://artists.proofprofile.net/proofs/artist/f9fff45e-facc-44cf-8b26-d48b909f7676.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 → block OTSBitcoinBlock must exist at that height 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 0x2e4490d962d8a737d6d650d56a488f20ada9f1a87ee8ba4c692bd3108e0ab34a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USE830989211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81478902791b58f01dcc8c6a8195c70bf8f469c596bd0af7c0d1044fb4757232. 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/USE830989217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5447c2dc1147d28e4a4ebd8642c78d1e1e9e20b0516ceb9f64e7adf6e6878259. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:56:40Z), 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/USE831588107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30ffe3c29d6f20cb3f5f4b1bcc075760f0e6e2ba09a30e2ef082c423c85a1c0. 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/USE831588104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadb96b8eb41b870b11be24169aac2bf3a7753cdb26eba58fd6c38a5b38c153b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USE831588101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7d10f91ead30f26fc6223e152a7ba1317cd6335ac50e305aaa88162e5a4ff4. 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/USE831588102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259d841777af7c58ac22e9fc5d6fb74c22201425ab7b7ce0865537c0b1ce6995. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZ22B2066589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf596f3feb9da0c271282a6c93ee49cfacc660199bd64ec74afad9c487fd7e5da. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZGWW1952211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d79e60750f05e99661f3fd971d2477656aa35aea265ebe347efea0993d1bd0a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZGWW1952212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311bf8f90189a889f5915e7fd9796f31f669c0c184b332a7d9dc320330776ed0. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZGWW1952214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0774c74f4930921b577572ca8fd2f31cc1016745db827263ae2e8d8bb1254b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZGWW2102101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb199223e8837c542d953a984b299177eb8d0adf13399ac38ad00a8ae73c597a2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZGWW2102103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67324034d8a13f7edb97334a129a40c23f3890d33ce4d642c2b6f3e5a43f2073. 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/QZGWW2102106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04048ba73307c842a636b85ea43940dbda8cb55be651848397a8df1e72977b64. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZGWX2191741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ea7e792b93437b5db6a60ee286d0f4c4bb5d3e4b7cc5471ad055e8f06cff2f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZPJ32161718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf784aba2dacb4ce814f56bc702d5aeb6bf4c9c60a2991363e026c0e954a492b1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZPJ32173325.