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 0x48c1197f6760af2a61af25be63355c375a4a407a0f14eb32ff3919fd1ce08d47. 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/9fdddb92-4726-4215-9bb5-531d8bf3e21d.json and https://artists.proofprofile.net/proofs/artist/9fdddb92-4726-4215-9bb5-531d8bf3e21d.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 0x364df905edcc5a5df38f0af09f2d6526c47d319ed6faefcf19e079620670b597. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:36:12Z), 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/QZZ7S2417239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c9bf739fafe0c9b53977f367eb4c636d154692adb99fa164ff9b787e2fcfe3. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:51:10Z), 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/QZZ7V2421640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fe0d424541f77008889633686a3e9a2ef7cf0f67eeed9ea9e15eac6fbcb537. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZZ7V2423491.
La historia de la tijera primeriza y su filo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc776c616024ae3b9644c43c912d95ae188360383021f917287a81b43f6856c. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QT3EX2454311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6103b9cb105661b022ceacfaa21a4ec31b3141db7fc25afd7221a07c7f6b7bb2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHN72560868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858eede3b30d50282166c3bb5d024b575f162def4d559645ac786fadec0a62c6. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZHN72560869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21afbce9e4df0224ac502c7414d833d06c3cd24860f69a5d1dfe3bae61a09ad3. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:51:21Z), 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/QZHN72560874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7773712cb506779b9271da148c3ba2b07766b0746ea10ea49b9714a06ec2656f. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZHN72559640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fc253e7b063de4dff45ac3221322e1afe41ed10391e8f49bd824820e746a92. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:53:08Z), 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/QZHN72562467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0770055eee128ae9629038ac7e65db2e44bac88df5aa96b5b012f5c27a685a. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZHN72562474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2afb473df4d65116893d176c2be3133b31158366bd734c6823770d6e3522a6. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZHN72560872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0561a4855890e6683afd929db4bcf456d036556a36691b0c961c61bb0298a38. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHN72560870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0463ae0a99dc4e7ca41e8b6ae0d6a4757acb4a72f3910442266f32a56dfc6022. 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/QZHN72562475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c2f28549600cd9345b15931852e1d82d654e02581fa322ddf7210c9211ab3e. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/QZHN72560867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fde09c85eedef3c0affb34d70917fd21f4e6828f64a6bf5390301412100b5f4. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QZK6Q2591714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a8967788a2b3ee854c9de95c0e016d698130112ff1dabcd3bb15c6b07b60c5. 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/QZK6N2504954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a612a638ff447eedde08c9030ab669f5cd6447f1b6a20fde094994d1f928d3. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZK6N2504966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bfa0465e9d78929ab046a23c2f94d50ded5eb19ef5f00bb1ee010ea5d11399a. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZK6N2504968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90965fb72670d9af4abafa5805d8a8f6e20b0b09d8cd2a36c2d5f599266f14aa. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZK6N2504962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8536b5bc36294f49b0274bd6e7875fe2cbad56e3d8e16edb978945d3a246d795. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZK6N2503368.
El astronauta tocando el piano en la luna
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4d772d8a6d51a19bb4077ed0e24aab09a5c1c7e36b212aebd12c3624e0d183. 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/QZMEN2558377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99130279f8caf2dd7628c2bc0b3255ca7140f7ff949c5ad04b4bf7632e3347a7. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-21T16:55:43Z), 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/QZNWQ2519748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9e09890b02096b0523962b109628adac3081ce2f8c0e303d289e5261eebf05. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZNWY2534993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c938abde3241e4fb6b79a95d9b5ff3123f15492b63ea7d07f2aba264b59ca81. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNWY2534996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c2062eab23e36b92e792a2a9990579733bd796210560a62b431dfa0c28acb8. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNWY2533567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe910d11fabff93a53800c658abc6d3825f2c8e9659da272bc512c0395b85d8b9. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:38:57Z), 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/QZNWY2534995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321430ac5abf69b27143d46a2f8bc11658d2266fc64a7eef38872f261065511c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNWZ2557871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2f3641680e1221fcc400995bdfca0ce5b9fb323dd9808deb1dad3365515653. 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/QZNWZ2561319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633a24b1475aeae2c49df36b00c96a3a2b6a7fc9e9b3510fc16c803cd8db1035. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:58:49Z), 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/QZNWZ2561274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4a3d2300eb22ea62d049dc520749427491fc2258ed416523f52a089002b63f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNWZ2561290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d7403d82f8ae7fa1acb77329c90af6c0575665f8875b17ac1832527d423358. 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/QZNWZ2561332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaaa413a3433ee05e371c1d56d66975fe55aca56f6714f2cc26e72929329cb1b. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:02:00Z), 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/QZNWZ2561301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7284e3e841b4d8c4be67b2fd88e6e4d1c72090467554eba587406c8fc7a8ef4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNWZ2561302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bde7dff3fae60c16c9cd5fa965cc65554849da0ddea647a9ecdb61fd893ee0a. 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/QZNWZ2557806.