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 0x2b85c46d15b289e0a4d0baf106e8a7ca3cd13b101f337e2a4a8401267087107d. 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/09110c8f-c62c-4e70-b4ca-94da8a1ce9dd.json and https://artists.proofprofile.net/proofs/artist/09110c8f-c62c-4e70-b4ca-94da8a1ce9dd.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 → 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 0x6cc0379bad96dad1dd6c88abb15ebfc6285cb06405c8d61eb27b929b0c7bc977. 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/IND862204555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef39a9e2bd38701fd92371cfbaa42312758cb06805aca721ba9afe90fbfd5898. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:07:02Z), 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/IND862400216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9678f66c283bf55b829e7cffa61d7635195585fb2e98fe900f16f3976676973c. 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/IND862400240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e6acfacc1e6f95895b4651c7800f0e6ddb09a61dabbb729374b11a95acfd7a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FR2X42451883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0170c193197ea59fab4f6eea00c132ed40703ed1daf125b00dbf2ac3e42d90e5. 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/INS7A2134635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1cc50852efb9ced8c69175f3ec1648509f74490f8b077b5f521040306830f4. 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/IND862500131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256d096d33f917e3ebab77e0fd6ad85ca0ff173f6cd8fce946fb35d6699a8d51. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FR10S2584439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fc39c070c0d0b8d07576a4513bc94e543f9e7491d0ca2717d61295b5b3ae7a. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/INM402501317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42af2f65a740e9e43ebc00ae113190c8cae0ee735dc01809ef7895e688abb72. 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/INN242518189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750eefe09a043bd6cfc21e5c292d56a492d6d4dc668b9471e44416862917fe8b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/INL232503474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecdd9e3fc4d659cf6e7a9a58a218bcaccf30ea26686a8c2a062115a7cde91a2. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/INM402501502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25ea71d3b4c6e2ca94e814d8301001bfe2c9efec7cd2b1266ff58fa7a4dc280. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FRX452562966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852c38c9b5e2ff4bd0b387ec1ef74caca18a4a61e9117aabff11dd97d9d9c001. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/INM402502235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64151f697f94509b7630558ab41d568ea92eb9bd008e33aeafd2f6d620c333da. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/INM402502779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4c56b5a5a28afa6044bf42ba1ab3045fca413677d464f27abcf4c1c34c586f. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/INE182581567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc26cdc2309d13285037b13bb798a5c5f597b72c0eaca8df604e6adcf19fc8f3. 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/INM402503090.