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 0x01fe37d3574d81a36f8f63ae266fc3d026f44a227639b1c4e655ce959e0b9702. 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/4842b577-4d4b-417a-9d74-193c3f87e8f1.json and https://artists.proofprofile.net/proofs/artist/4842b577-4d4b-417a-9d74-193c3f87e8f1.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 0x639d576977e5ebb4825067457c0533041c1014b41506587b447254ee02472ad5. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/CAHQJ1896752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26383f62d4146afa197ef7cc79f749c5b3b02102a9da5719214d6887e3fb8b3f. 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/CAHQJ1896740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa594dfa1655b2d3dbe5e5275b1c024b263361cd22e268fc0d90b3086ca5dc1f5. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/CAHQJ1896749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9efcee18d284e96e1475422016cd8a5df931bb67a7b00652b180cccde55a955. 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/CAHQJ1896743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655aab6dca63b55e844e506fdaf8df587b2ca378513e562f95eec9712f776b0a. 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/CAHQJ1896750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6873887211caf6bc2f5f25051e2a44d673df63a00a1e515685c4e58ba2ef8305. 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/CAHQJ1896754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bef228b4b9651ff4c4123cfbf1a1d0820bcc8e3cc8da02382f5d9c0d1aedb3. 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/CAHQJ1896747.
Frere Jaques/Are You Sleeping? (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff94c3998f982afc210d0f3b3dd99f14b84e13e69d8eff5543f7c8f04e4714f. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:53:03Z), 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/CAHQJ1896742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f805decb47fb3c97d9a1a7c3b2a9ff48b7dd218ab3fe6cd57984576b22c98e0. 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/CAHQJ1896745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a02fb8102e6717a67bed9cb8002e9be8799b62cdb0d72f489db52b7ecf6612. 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/CAGOO1996152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b17c752f144998195a6d4e3addaaaaaa6fd8d7ab75c8b96baa22b91e8b0e0cd. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CAENV2008670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2f60e87971f91e04a65fe7b700cfb5992118a242b937bd5fe111b5d22e8caf. 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/CAENV2008678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c21817867a3f52191f23c7f3603a3ace3c6bd1c9e27b91359735d2a4b69135. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/CAENV2008707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d80699e451f79ee18ddd3bebe31954ed1951d3e6835dbc762054552d51f3fd. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/CAENV2008713.
London Bridge Is Falling Down (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2c633e8f8861ce4da150224687899fd5e581d3a1d8da6c0472c8d33735795b. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/CAENV2008677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64cfc504f0695916a0e1365c8df3e33362542a2868eed51161d7c45e2ddc1a72. 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/CAGOO2025894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26663bf087c68b8dec1c8dc6210cb8eb374616cd6187dde2d81bdd5d4387c0f2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:56:14Z), 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/CAGOO2025895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7332fce2e87ba558c648a90f97a35827dbb59f9be178a55643648b9edc82b077. 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/CAGOO2025899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae927537105a1e81c3bb5e6fede4f15f4ca0f512051b30a8ee0425dbcd764857. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:33:37Z), 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/CAGOO2025912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a07eed54f0cf638949c35d27104cdb14282a938d0b1f49b6191987e57d9779. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CAGOO2025893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8b64412a9dba288926d8fe1f66f102d0149af9dd9a0f7cef7831253a4ce85f. 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/CAGOO2025891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d99eb6f92e2efa085225dd11fc7711b1a72560bee48f702ba271d440c1d3b94. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/CAHQJ2137264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d0e5b0dbb72dac07dcce6420d9a9ea86c3411937a7f414b38b5ebf7bbca819. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:26:25Z), 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/CAHQJ2137291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7e65488bd2750fd74288af0d3e8629e0edd015d4eb697a105cc01f28877e52. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/CAHQJ2137262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc65b08721a1165d45e5569bcecc9f35192d80c041b3ef990d0d9b9f42e0be06. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:34:49Z), 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/CAHQJ2137265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6166c5f8b12ae0be9d4bca03baf61b33c13a53e26936b1c053629174f64ae34c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/CAHQJ2137285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8826b3000c07eabb4e1495e978ce0a8c51e4670593684d00fe308f1722639092. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/CAGOO2104988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d885dfbd5613093c61ed3644bb1035e266f12d603cf5c602fef98e1312ed10c. 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/CAGOO2104707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fc645190af5786c7c19beebf5ba998f56933a417bf4821e79f55eb8bda9589. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:22:43Z), 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/CAGOO2104715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d10def2e813b8df5417720853ec524536829c02735a00c9310e725684760bc. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/CAGOO2105004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d961fe082332d39a36fe90a252a9a691371f328ff8fedebe67d915e3cd02dbe. 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/CAGOO2104724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142de1ba8da219eb6d50729731b711bb197868d684f768ad44e72555428e528e. 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/CAGOO2105000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcac1db16b3cef0d4f87f3f50794e0db0cd099c10152f06003c13296cfa759e7. 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/CAHQJ1896755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57869c7e122ceb58ad43af699c1b67f85fb343b7f05dd5102eabb5c33ed07f5e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CAHQJ2243722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac14b859045f1771b320f9adfb4d0a9cb027fa42cfb611ebeab5b6bceaa620f. 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/CAHQJ2243727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7eb062fdf74aabe3c65b826db4a1a5b705fcc40c114131ac9a11d988a183dcc. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/CAHQJ2243731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac24f4ac035f92cc59f8e37324c1c03286d642c7469b11566c2e3650ab38c013. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/CAHQJ2243728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2450aa276e948d2737ad1e3f955f7056e070582363345d5745a7ae42bea105. 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/CACWV2356742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea08d3ca79b210e0ec869f356cbe552b1152307b0fbfd54fa346f59700b5cd6c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CACWV2356744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc44e5d613775b359099fcd1ce4ff97fb803bc69fe242c64eed6d7368dcc0413. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBPS85135125.