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 0x3635beb26ff4f5427ddc2afb441adea4ad5456d348f786250f48163dec08265e. 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/31680f4d-562d-4935-a807-49aa8697636c.json and https://artists.proofprofile.net/proofs/artist/31680f4d-562d-4935-a807-49aa8697636c.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 0x0becbfc5b61ce33e4672b8ca9c169858e921bba3f3e76a35270f8565c1bf950c. 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/DER412100177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c355c46fa77ca07ff207f5de5fb7576b2ee9e70d3b183e48b7a53266d0edd90. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/DER412100179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa984349723c6f0d18e13cda91801d3162607d2c3ac93af903a5862d3ca894e30. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DER412100182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056b6df00e0de1bbdf6c957012540159a07f351f5752f9b0f5879d1420a59e9e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DER412100176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d7143b001b7f4f40b3e8d16221f6609595dd5b73e8924530dd2bc2e87c96c3. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/DEOV42500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf457bb44e69373789ee45de7118999ae23b0a4cad01b205f69806a25b4b59489. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEOV42500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d7143b001b7f4f40b3e8d16221f6609595dd5b73e8924530dd2bc2e87c96c3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:29:17Z), 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/DEOV42500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002c2e343370be2b5f7e1293c9cb076e2bb335812f56e8d0e92e09cc6fde5bc6. 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/DEOV42500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf457bb44e69373789ee45de7118999ae23b0a4cad01b205f69806a25b4b59489. 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/DEOV42500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c966a5717d90047a5a4bf960281e8831a0d0604d0c7a4ae4388475a343f7653. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/DEOV42500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe219cb389c14eba36ac785192b5f0bd7ed3929b779030b79e9e0375443f61c8b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DEOV42500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3975ad695cd4796e99e0dda9b08be929057dd424f33288d7d8bb6ba800b40d70. 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/DEOV42500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456eabd9b5aaddbbb36c443967c0bea7bc1f0a4fb2a580b1edacedcdfb2c3cb0. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:37:16Z), 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/DEOV42500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9087bd96297252f18585684fcfefe7fc62540a3ece610b4e94d5b056ab85b02. 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/DEOV42500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3f8d56c53697822d4765357481600d59897a2c34cf2deefa45c74fcab99f4c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEOV42500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9c97f39a68964f4f5f9ffbde93bab2191f022a0ef0657724f2e034c73646ae. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEA892000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e73b2f1aa4ce954d7073adb76d1ede4fa09cb5756e13c0793afe8990972ea5. 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/DEA892000059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbf895ada7585e2037b2729fdb62c5c485a8bad1a6c437e9e10ce3febb69d75. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/DEA892000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b9791c18890453d2b14c1bb41e7172464de0c38aeb2b685a9f14b75f75cb11. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEA892000062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a2cb217c95730286df4c06c69308e15f4514cc1649aca21932925ef5a134c9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEA892000066.