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 0x5ede6efffc1216a1e20770611a531f0d55913d394465ed1040cc5a0ee8f026e5. 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/45477358-793c-4dcf-a897-82214703c89d.json and https://artists.proofprofile.net/proofs/artist/45477358-793c-4dcf-a897-82214703c89d.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 0xbd2db766f164b6153a33e550aa7692183ba58682914dd492a88a29f60a4da532. 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/QZ5AB2413621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e41bbcaee84e5038f904f8a83c3aefb0d5ada088df91df83747c1c1fbd462da. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/US7VG2496979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65e6cbaa0524446d1e837d1f09acd2accf1e45eaeb5059f25addc9801f0bb8c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZGLS2451850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605c949aed7281d3ac81362794b83afc8d7f3bd24f8d2025971d4678a742ae31. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/MX2832411645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7fff23e9e2d4b100cec2c0c90e5da58e60f37b62022cdd68b2ed6e99b6d542. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNJW2449416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e24ca0c732006e74963fdd74db7eca0818e2ead2f1fad78ac2ef307acd84946. 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/QZGLM2533259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260949307d353b640253f5b36445308b2079ad81ce83e5c1b8a9f84fca2b6bc9. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/SE6XY2528722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236285522668747af87e241098993dc7900926f9221aece270d1eebbafbb93cf. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/SE6XY2551932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9efdde99de14b54fc17ffd4df6856a01aa6e1603d083497b35ea9d07a47bac. 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/SE6XX2562014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95cf2357fe874afc28976b00b431a5522ca3293bc015c006226e422b089a94a. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:20:11Z), 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/SE6XW2534127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac8352b674244313c679206793d24192f3b198630478c51f991b8b133a5dcae. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:50:34Z), 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/SE6XW2513839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0331adcfb92939ca29e420cb209d8a925bf9264e2d237ddcd15747756bf15102. 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/SE6XW2547191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6237e7df7815573d49508a155933df13a5b03950221364ac59e1c1a99390335. 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/SE6XW2570686.