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 0xb190a99a034c64719cb7785021ab3fd28c7412044347d22212676ff02712846a. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/83769d07-b615-4f25-91ff-1183399bfd04.json and https://artists.proofprofile.net/proofs/artist/83769d07-b615-4f25-91ff-1183399bfd04.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 0xf10d0b503d27b6e2354bc8f97b890862c87289085ee57776060b952f57e34cb1. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/ITILM2501003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9db2f93771fc09050e31171a9f2267424979a0ef66aba78bc04403ee04e086. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:45:05Z), 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/ITILM2501019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc236ea8b8281bbe30d0601180aad5e0d7ec39087a3f1a5b9b39acc39f3266f1. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:30:02Z), 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/ITILM2501021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0247cdf9d987aa05549dbc8de5ba66a18e597a3df0eae95d2fca74a0372a2d6c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:25:27Z), 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/QZQAY2529661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6f145cfd7ff68e0dee9fd7b2c6559b2e1d87d39fceafe0d3c19c565188110e. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T14:52:28Z), 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/QZQAY2563752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba80940ee83fec442c18c1bd5cfbf287edfd5a77988038fb0d95a2ebf79edb4. 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/QZS7J2543294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889890a25ffa13df57a1f5e9b99f729a38d17c15e6be5781a8e10cc48f5cc39f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTLA2528426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493d9d86c791feef26ba3089a9907b7b0ad9d8fd5d286c577b9c707736544bbc. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZQAY2598379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a555617c408c19cb3779bb3f15b33706ae6267ed142456c37d5f4f3c0db712. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZQAY2581851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd191a4bc45a7775e300694898bfc6a7a8583769d7eee3dfe3e101e80ca5d5d5. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:33:59Z), 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/QZQAY2573847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a893d5e5a75f3dd17cab28f4b321dc48243211a741e40266e2f82b3fc60c565. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/QZQAY2586869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda134abeedcfbcbefd7a7806175a53e976f4fc295acb997f3e9c9b1dac391b9. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:55:15Z), 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/QZSYP2599911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8a07363f6b39a2194b88380f2feffa600780348a53dd2d956bc8dfeb0d6187. 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/QZSYP2588956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1380338ea79e8c0e906efb93ac609d85ef12549175216762affe85d4accf5fce. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:56:01Z), 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/QZQAY2588260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57320fd5f5626d848c54c95730d98ae74f68caac867bb679ada29ad1a403bdf4. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T21:02:03Z), 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/QZQAY2536327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f2e1fc26711fd0164c0c6104b9bfd54fcee5e2ec9f072eb73c2eeb5caf453a. 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/QZQAY2556226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f51afeaec5c92d8d912d2efebb9753df7cce0cae518d573a78845829158759. 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/QZQAY2590063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415145c8280ac89865f0e5220ac11a8b55d0c56c8e8709b0298db65a4b3c1795. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:45:41Z), 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/QZTLA2525240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fc12156e6761d01323d840b4653a36ef968b17fd6868a9c2ddd1965c7f8392. 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/QZQAY2540344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f49711dff2b6d7e50bed9f864cbbe65f0f0171fd619d9ed5d4a9df77b2da784. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:56:35Z), 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/QZTLA2566353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8e36432ad6ed2d6eef6493538a4ba589a114883b354b8c503a7842d9a75c11. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:24:30Z), 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/QZTLA2501116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948d45965e8fdcae1e2c757b308dbbc4e34752d3a63dbbf763de3f5858a2853e. 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/QZS7J2522739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ce47fdb83be05f3ee30c2cac6197ea65859b40d37b61fcd56f54b0206d2292. 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/QZSYP2565330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fc6228de6c7285b1bc3cd6ebabb7799b9aba9df5c6a7b42c2e29461380b683. 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/QZTLA2596737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0495b7dd74c787fea2915c90175f55758dbaab35bb18bec4530766e9b5abb2f. 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/QZTLA2591362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7970b0cbb53c4ef134960b56820226a7d12b91b96485cbbfe26a59c4199b17. 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/QZS7J2539149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e7fe2891213fc170955e6291dc27c63bab8b2687d4410bbba2530e4a4fec57. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZS7J2551446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3146bf5c07af39368dfccf6fab70567728281a3ef21fed965017765b987cb05e. 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/QZS7J2540668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7d9105b327260124153d19df6fdc2d4a2b57cd4c418d7137cd244bb7e368aa. 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/QZS7J2567770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b7ed6366f7b3f78b6f0288d2cad33412463cea1bf8777533376987926acee6. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZS7J2535829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd260b8ba51497045a4feb8ad7820d917cc17477c0d377b286bc161e1015e235e. 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/QZS7J2534507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3747ba4b3f026e78b9bca8bbb1c62e75f7ce2bb5830431d3dd89b1ecf215c940. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZS7J2566050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1caeec772fc138fabdfb2791b5cc94d2a01286426bcf0bf37af4cae0951f46eb. 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/QZS7J2529372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050d3101809b068c6592bf703a640f37787a3359e5476f22e86304110845c023. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T14:00:54Z), 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/QZS7J2557746.