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 0x5999099e178c5aa05a73a6c6f2ac3015fdb4934132554ef9bde2415d7ffbafa4. 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/ba200b4d-72da-4daf-b89f-2235034c2ee9.json and https://artists.proofprofile.net/proofs/artist/ba200b4d-72da-4daf-b89f-2235034c2ee9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x07df5310673409b69fedf889e2e6b5564c00bb55e6f6f6c33b8e07a6db4b9984. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/UKZVC2200480.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a9798de72d8d3781d0af28f490356b15f164272c1ee10d8712c6cf23cd31b1. Chain 2 (Bitcoin): anchored in block 958660 (2026-07-19T04:21:53Z), 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/UK6821749568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ba5f3b333fd0bf9ab28760aabac123f23613f40a5f8d450f4d7816423e1719. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:11:21Z), 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/UK6821728471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0a239d4f442ff54c70424ecf24dec26f9ea0f6db0683d90a2bb583d42c86b8. 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/UK6821745006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8977a3553e7085a3755c6a62745e1e32e73c2d4e5edcf0e6061e2e4ce29eb98d. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/UK6821738780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e6df505f94531d503b812b5da00fc6012ede908b79feb718f7d10be0fd33a9. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/UK6821749600.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca77df8ce62409a80305f6fe7823ef9425af2294a9441d83a86219ece7d5533. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:53:50Z), 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/UK6821749448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb495e05beb2a619a055b82dd1fb3952ea11ee2685df67dc22308e94dd477bb7. 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/AUGBT2227755.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8899943af802c6d0032852878254b348fe560a89aacdf872249d08e5fc32916. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:02:41Z), 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/GBPS85156344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d31d7c81a8cc405b698c5342b9aeb21eb3cd7b7fa9cdb0dffdf5c8e5416866. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GBPS85459666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fa67ecd15146ee6d00949fc3bf81c825b536c2f8cf3dc214bf894ee9778af0. 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/GBPS85286423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca483a73881ffb2e3d5872f5d6dda52899ad705c5cd931c0d8adf2e342341ae. 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/GBPS84998199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37bc1cea55aeb37ec10a9e99024b1c1e1089ac0a2eb2d0c2860d3508b411183f. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T16:05:56Z), 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/DEUE12594474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bb7273b4caa00f33f462b1731621a7b81f71077c45370fb8c4b1078383a91a. 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/DEUE12599363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2af464ac17a04f86b6c7d2daa39228307c7b4597ce73f860d342795aa6c625. 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/DEXN92591132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba07ab15f1520262d98d145f2acf8a4cf63d4ed5f57cb589ba14e77127e95a1e. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/DEXN92591126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50dd8e7f7d5becb571d61b4abd29581e8eae74ee9efcf090bbb878ec318df402. 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/DEXO12522600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae5d8ba714f9b254d3a419d95e5cb08951c2dc4662827dbc7b6cc2ae5a448bc. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/DEXO12533081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ac0dfb74d8fde14d000797e2a46ff4f98eef991f16b70ee8c4fe0c72a68f9f. 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/DEXO12557031.