thumb|Musical notation of "Le Réveil" from French military rules book published July, 29 1884 "Reveille" ( , ), called in French "Le Réveil" is a bugle call, trumpet call, drum, fife-and-drum or pipe
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df806cc937db751f0860f4b083fdb466dce8d07ea2cde936eb5d25ff46dcd9c. 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/7bb1ea5c-748e-48f7-998c-7d60e574931f.json and https://artists.proofprofile.net/proofs/artist/7bb1ea5c-748e-48f7-998c-7d60e574931f.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9be0a0ec0fd2b613db0f4b532de5d6fd0cee018d3cfc6db0570c4bcd0f6f5e. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/AEA0D2256892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b8c54da088e955e04f88c8b2c4c2286f65a53c1112f582d382b9af3c749832. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:16:12Z), 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/AEA0D2256894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de363d0aedc561e8921124949d33ad630c37b7fed07d15036185a5a17570493. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USEE19900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef46620bda193a66e188ec4ac4dceeede127470ff7ba899fe2749f0737deaa04. 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/USEE19900073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f60db701659f34ce635c296185861e280f39e0427cad30353cc7f246ee9fe0. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/USEE19900075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76d4d6cfadceacb91effa5a977e6bfd0835f6804bd38b98312fa4145c3b528f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USEE19900074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7710027cf9f7154d09b19f38736a1d2264c265618cae860676699854471980. 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/USEE19900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea643715e5243ca5c84336d00a2acc1e1100219d987ec3a3e54997c254584932. 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/USEE19900076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d64f31c96788c0bb869df5d07357914ebb28da10ea3f93c012c807bb399d327. 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/USEE19900064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e586f1a6c1fa99183c9e468e063b48a16e3185ba9d95f771b2cc861d29b62a6. 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/USEE19900077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f8ed4662c9e30cfcf74ce3a01f572bd0a55bcbafe6ebe32d6f57cbdffa7236. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/USEE19900078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd752ad769836f066dc47858a4b016002e7bc617fe4cc6e9e08164cfe696681. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM4TX2558902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1940bcfa25ad34d39e599792242ee36264f7fedf9e22f8c175a0e87380da91. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TX2558903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3ef108d6d835c84a517ee223cb67c465beba12937eb6d0b5e3988f275644f9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM4TX2558904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea162a7548c349e3c60c81c771bd8e0d954f15b87a9e9636141beffd578af66d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM4TX2558905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a45f14275a9aae3a2b434286bb33a66e44778d4f95904f42ffe763164522b3b. 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/QM4TX2558906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7a34ebd06850a0878c5764a062c1912dcd3841ce6995cbb62844de6c3a355c. 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/QM4TX2558907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a83dcf384c04b8df7b71e1566ad36ddaf5359062cfe82f73d61e69382703ea6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM4TX2558908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8836b41e782604284c5d71de088a5651aaf05c5f25d73633367470ecaa4f01. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM4TX2558909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b477dfaaa5f3ca42bc05000d3e9f2adeb1db0a688508d841fc7d1514c2cd4dc. 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/QM4TX2558910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c88505c7a8b2493cc7ec2351fb15af1260d6fbc88f89856da20e1364d7e15a7. 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/QM4TX2558911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb824c0df484438487789a2e64954b4c5a1e0b99ff53af2465ecc5b80b02a6b76. 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/QM4TX2558912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429c141ef0996bbbf9fda0b61ef8526600daeeb8c29ae968f9a30d8ffe822a14. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM4TX2558913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fd758b12b368863debb52e9f91343b5335dd4b3d28feebced9b151058226eb. 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/QM4TX2558914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee38b025cadb6ecedd2373de61e44178206a41fdc810eed7d7917277c6ee96d. 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/QM4TX2558916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde032fed4d2fb296eacc0c53ff8822bac8bf66c4a038a90f2f3fb5bf452b2dd. 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/GX5MX2482253.