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 0x75ba453295309caf4ae1a3edc68bc3b7258544d76da0f51067efe92209f2844a. 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/457edc7b-202f-455b-8ac8-f80265b43b2e.json and https://artists.proofprofile.net/proofs/artist/457edc7b-202f-455b-8ac8-f80265b43b2e.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 0x2cc1f446d38d8d2fda394a703b9f66bbe8f6521ef7105ae20958e19df39d9474. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CHB242313475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc02c2c99f8cb039887768450f8484b3f60ff62f8311ec09933b99eb7c3f9355. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/CHB242313479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa6efcc625033dabc9aeff0a760513faec34facdecc1e8144780dbefdd57047. 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/CHB242313480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ed9e7de582c1323ddf8d295102b055d2d5d5aeda3b2208d2a37faf512eb4d4. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/CHB242313482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30711de24229f53d41a6b19abe754c48ef68210a5626dee26cb5d73c2143fb7b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CHB242313483.
Méditation pour la tranquillité d'esprit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc304371d72c550fa9b8ae593e46a48621f57b84c740108c326d25a1f413829. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/CHB242313484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e58ebd6b26a632b6c227d9f37306f7ba5a611ca5a3baa7d03d87dc8d2687389. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/CHB242313486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67d00ee438da4a42fa7e1b4d394af545b5b235db1afb078cca3a56292b10fbf. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/CHB242313488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d5b97af4dfd7f6c2f5f550859a946aebd56be6a759553c5713c8c991afbc35. 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/CHB242313489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa315f0c90c3fed3b079af612fdcf78f15e9ce41994b565867346b6c6daf1590b. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/CHB242313490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4cb84588e0cc7f001773c909394006a353601935779b9f0c19c585e1581beff. 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/CHB242313492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8623fa55f2d135185226668e5b958145ea7585ca41d46b2452ed5c5b72adab40. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/CHB242313494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0207a0fcebe411da1d6465741cc997227ca2e35439fbf97630e96853bd9b1a9. 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/CHB242313498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fa956f431bec626755bb0b88745521507ca8018d358d811c1fa5194bbca980. 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/CHB242313500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328c7592114f7540f3720c8b5cc833451f0a09a821f91adedc7498da73be2c2f. 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/CHB242313501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644ff0d9cf7840e0ba539f7bc32ff48245fd94a63178b3b4d198737232bbc09a. 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/CHB242313504.