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 0x24536af1f7e4e5def91bd863176d32663d950dbefc54507809c56c01e5cdfa89. 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/07c2fb64-25c9-4242-bdcf-dfe511187c56.json and https://artists.proofprofile.net/proofs/artist/07c2fb64-25c9-4242-bdcf-dfe511187c56.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 0x00387f027885983e098b2af385cc94ec31ac35c4ece49192218fe36e4c97ad13. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZES82216748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a564fb91c34363ce3b8c086b76b617db64c5002a2abbff56148343d0f2b9b2d. 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/QZNWT2201681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f2b8db76df0c739fd2879dfcce4e0b3928a134f43bfdb90b4487f51103e110. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZNWZ2252739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa998a24a38b33970750a590d57245bf72ec20936db9ed010bf7d733ecbb649a9. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZNWZ2252740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764d1d6aac8d8ce318e205f56bed90f313173cbe67bd6237b977253469ac0c8c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZNWZ2252741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7dcf267952c41d6ec4b346656939033818c9f2e22e37fc6424201ff85c90ed. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZNWZ2252742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4b75fe4e55134b95dc5cb07a70dd66faa04905a35ca354cf1256bd77efd2fb. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNWW2373889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2179cb97ba6b5f5d15a4bec57ffb00a2407c37c7093fdf3c3dacc13f84681f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTAY2339895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6657a1c967b0877859eacad8a1f5e11098fd82540bebdf76101f35fbaae30817. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZTAT2325931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2998d5370b9bdb03a5a30e933e3dc595a4baec38a11bcd574f446a0e82258fa. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:38:05Z), 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/QZWFL2388099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329aca25f3025441f3a85b01d93b8c7c77bbdaa6960f4f8a9c36ff9663d5ad37. 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/AUGBT2418233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb80fa50b2e3ebd0b225292748043b72318cabe98343e19ac3af0fc90552e592. 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/QZHN62438211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf97585c6fba85a6ae76a551238d1399fe675ca538f3159bbd7237f965ef6b6. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:51:44Z), 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/AUGBT2545506.