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 0x3f1b659fddb7eda73f4717104f4f97f36e16e5b0ab658996ceec5e720411ee1b. 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/0d41547a-fc3a-4405-a59d-4b030bf56d55.json and https://artists.proofprofile.net/proofs/artist/0d41547a-fc3a-4405-a59d-4b030bf56d55.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 0x34c03144a22568ca7c9aba5c4f8bcc64b4c751e9412bf8f93248519728f234e5. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/TCAGB2211186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853e833f7a79dc88a63dc7dbf48b6f8c4530af9e38839a1045b21dcab5756929. 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/TCAGB2211213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14df11f9929473eb9eeafaba05cff1fa53216f6e7003c3724de107586681cac8. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/TCAGB2233444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45349132f4612f6c169bdd1f3f75d920a9176d77b38d4c983b1dd3641f57477a. 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/TCAGB2211250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe05637197db799f581503575b408838cfcdbdd6bed61291363b130af2a439f. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/TCAGR2241538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a50f0b89112d138d3ef31abcae288932e08c5df2568d48f1814a2207f8ea96. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCAGR2241576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547111dbf6041cba7668a25164f26e74dc1925b5872891e12e641dfd66af6ef1. 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/TCAGR2241633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bff58be28290e507cd82423a11bbbdb85326793882466d5dc277f934834d947. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/TCAGR2241680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf91931dac9104582409f0ae1a50d83dcc1c0c08ef0d8a0a7aa5cebb55257e0d. 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/TCAHN2358220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec6cd76fc323b062f4a0d8f415a7c6288a4a58c0ed237b45d9c2a5d4f88953f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:49:07Z), 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/TCAHN2358306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf952bd7e4a23feeaddb849a510b1bb4590cc8fe738d89ed44639978d187d9dc2. 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/TCAHN2358533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f082ae6136008bfacabe906ff4146e005d77ebeaf7fec0ad50cb1cf6bdc800b. 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/TCAIA2441240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24df50c963f5f8ce78983c598b93d7213f2ad89fd770fbe1a4f786d690547a83. 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/TCAJC2468890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812bfd63fc2982619daae1fc1e4b5e48851240c1580e7acce8d23310f7bfca4b. 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/TCAJD2582792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae72b8729753b004b5d60a34917b2fb09e8a467782f3e9ffe147d7d28e98a7d. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/TCAJD2582808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf285016cd2a73685dd9bcab9cbb6b25ef21677260b6fc804ea2475a2b136361. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:25:42Z), 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/TCAJD2582820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cc01d4565ad970251f183ef7bfb8d2c379239c35a80d91c48bb7a68478acd0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAJD2582846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1865e0304297ae6566c59ca9e48facbc6c457d0458954face76206f94cd5c9. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/TCAJD2582863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e22c1336f89085cecfee8d36938be3ffcecfe315b0675e99db65d3177844852. 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/TCAJD2582935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2a830135a10876334a984ccc8e23f90b7405b0879907eb35953ab56aa9eba6. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:41:10Z), 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/TCAJD2583010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2b88e4306044747452001edb3952a4fbecdfa8d7c65c51c62d9a2af297587f. 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/TCAJD2583018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd117a166f956fec5f2cc1bbcd18b0ae0b176b805c8a9a88c0c6f4173c2482b76. 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/TCAJD2583079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1a49658ff32235f5f371227204faae4377cb93d1c0079b0877a51cf41fb5cf. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZS7J2507008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fcf8f6f5e94cdcf56d5c01e41e3b13b728a09148ebf9ccfaf4113d76ec7bdf. 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/TCAJJ2545012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61472c1809c6f8e17ad9ac9a6f17338a983b019f190deb8de19e29ee29e4dab. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:40Z), 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/QZTB52578918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7beaabf0b43e418de54debcb004737080be2dbcb0f1e8577ac825f5bf16b3ee5. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZWFL2534143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d28b490d50a77175f9a1f5643cace3a5a64e17d92e1b537807b85097d23dddd. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:12:32Z), 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/QZWFQ2585938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc993ef395e9cf1a7a6f90c5ea5278cd62ac7cd62412b850142584a9a0bc2c030. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:40:58Z), 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/QT3EX2539385.