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 0x3c04feba79140730f737c95863df6a5ec4ab423e03a9e6caa8d86921cef4f9d6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00a26cda-39f2-40c4-af52-64f64d115194.json and https://artists.proofprofile.net/proofs/artist/00a26cda-39f2-40c4-af52-64f64d115194.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 0xa80cf7ed714a70432a239f184c09ceac89ecf3b81d80ddf19af30801177d1c0d. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:52:50Z), 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/US4XQ0510026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6202110c19f82491e401870c473b910cd76d71378e4a5d3e5cceeb167d2993af. 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/US4XQ0510027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f8ca4f2d1ec8bc221c3a19d8218bdc9293451d4ad6ec348809207f6054ab06. 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/US4XQ9010098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd43e11629cc0d99f3dd34e82ead3707e7739a75e8261b2f79d986cfd5c12be3. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/US4XQ9010102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f5c57d4722773e35c397b2bcd2bc234b3c3fea893ffaf5b70a6908c13b0bf0. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:20:02Z), 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/US4XQ9010121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51409612d5f728354f38110283ce5f49b6db36806bfebf0243a8b90fc22950b7. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/US4XQ9010122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709f360db898e008077b11484f03b78ee90bf025bf68488ab5981679c957ebb3. 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/US4XQ9010127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a76e951d60c7e4d1e981ff9a4175e34cde137b53d793646fc12e76bd022fb2. 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/USHOM9201018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148f355767bc6864213db0dbd39390579a814d0a9721072c7e140a0edb77ccc6. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:04:29Z), 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/US4XQ0510011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79862c6020be42ca94ca95545297225f5195d50c646b6dac5242716a66bf3071. 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/US4XQ0510070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1959eeea687e8d5e03813ffff0c6f973b65d5685c33dba2081369c158e3d0a02. 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/QMDA71307977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5d45bee8cc93c4d2fc9511ce187f39a4dc3a93e8a342f8e1bb60c496d47973. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QMDA71307978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf645c16c2faae7d7edf1157088e82f02d77bfe8884bc8d545ddd43c7d7dad8b4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US4XQ0510075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb38de218b5464c144f7c21b8d797aa019004a42f0962f05dda1d35a2604bfa. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/US4XQ0510073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dee057d4f3310e1235caa74866feb4cf83af9daabc20ebbedfb297174d48d5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:54:21Z), 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/US6AB0900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f09288647e1a9b9076ba46efb9bc0cb2de9dacf86f6593cef20f8b94abf42bd. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/US6AB0900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8a98a39426d61a319feab28baa42594ea2117800941c784facd8d2a4913b03. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:17:25Z), 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/US6AB1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5c4505592afaa8939b9949a86bcfc109634eb624e5a389710e3c5769d0b04f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US6AB1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e9676daa9d63ae9d9c0496cc2a652c54dd2604a210f54c9aecfec984a6bcab. 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/US6AB1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655d7c0e64d9cbcea70c3e1f26fc4e16dc531b3047df56af7b00f4e6e58b0ea8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/US6AB1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6549a53729c765a625a9f1df28418161a1c7fcdbb9b6d6f6d2e08c52b4107f0. 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/US6AB1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461d04580d2da18a3c0d545eb02f67e624fbefd2832fb19e16603f5fb4c44b62. 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/US6AB1600010.