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 0xc61680e3d68ef1966fb316e5a51d6eb43cf6201f6e653b3ae1216173e47c6034. 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/cf778c69-d3a9-442c-8111-89cf29ba73c1.json and https://artists.proofprofile.net/proofs/artist/cf778c69-d3a9-442c-8111-89cf29ba73c1.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 0x14f8db27e798089c9c90d97d884e22e58afa0e181d1f5aa6298ae07200b41ae1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMTND2000169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c3af5762bd142a9478b2b7a830649831ccb36fb6fd4db698aa1c902fc7187e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:46:46Z), 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/QZTLA2460526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8eb24cf9461e4821d07e5d1c78b6ab78397094cc8412dab7e5f597be8fe1961. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-22T05:35:13Z), 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/QZQAY2488528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b1d5866a78fd5221d2fb068edc441b8af205c824bced7071747847fce80bba. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTLA2447928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6301227813684e4c7f86bb44062bf4e057ad378ca61cbea177fd7dcccc106d43. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QM6MZ2219970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b26f4bc824168ea7b4641105a63b59dadbd0da2768afaddd0631a8f4cf4527. 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/QM6MZ2252683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd155b3f25a78e316038dd67de58ccbb39ba67aaed566121cff3ffe72d2af0012. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM4TW2263930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e377f9663f13e397a89d0ed8ebf520158ff5df18376f93c810d0492d964b009. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TW2260876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0074df54f8265a022f48a5555cb87d7932f5fa0ac158fc29dc0d88d33075932d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM4TW2263931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacab8b49ac1a7ba7a8b8588fd25bc37a92c2c914e146b54760e378359e6ca9d5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM4TW2263932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5affb82c88ee994f1960eeec95e9951415d33a3dbe56fe59aa0af0aca4c860f5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM4TW2263935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c41368440cfcc592fd20bd56e0da0f1fcb3cef64d054fe2ae7a89860711072e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM4TW2263940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d22b6cd8d128f0dba0a0a6f7ac4b17bbadb51a94620ac4d64c3dbfad42db16. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QMDA62155220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c2ba1b633e1ad04dbdfc87b3841cd05d8e56396c3f5afe84a80f98fcb9f253. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QZWFF2489339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c3af5762bd142a9478b2b7a830649831ccb36fb6fd4db698aa1c902fc7187e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTLA2460526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8eb24cf9461e4821d07e5d1c78b6ab78397094cc8412dab7e5f597be8fe1961. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZQAY2488528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe736ef3ba442249d5d64ec4dd54a341cf6043d9c92c868808a2770e51ae18e08. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/USCGH2419651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307b7b7d8333a3d81c146748ad498ac5654bc5f66cba6f9097824e51576c2ac5. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZTB42317765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae74c8a36077d6a9a3a957e220772cfdbadfbf6630ee45220de219a51a22943b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZS7J2324602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fc61733f9661452a667ab8d04671cbd5b0ff02630faa29c9943863819f5e6e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAHA2349503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd83de34f2ccde447ec905cf5e050f99f00613f9b7fb3121ed4104716b0cf55. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6H2270288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fab5119a029556ca703858ab3b11fc6a3b5ace1d1bad3b7d53724bee0272088. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM6N22271569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6301227813684e4c7f86bb44062bf4e057ad378ca61cbea177fd7dcccc106d43. 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/QM6MZ2219970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e913c3a66856deac19648960c94df46fe1c7cbe1466693e4ef4708f45d57cb2. 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/QZMBZ2200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e377f9663f13e397a89d0ed8ebf520158ff5df18376f93c810d0492d964b009. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM4TW2260876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d22b6cd8d128f0dba0a0a6f7ac4b17bbadb51a94620ac4d64c3dbfad42db16. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMDA62155220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4246f363a26e615c9b11e2f47d782e52702785a04fa4ede2b27f16adf49abaa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMBZ92184558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043e9728210c7aa1d67116b4ded5f9dae84580e4af864aface7f481abe260b34. 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/QM4TW2112991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178abf73920e07198a23f5f4826e0640abc818173624ce7797d8da2d68c080e6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMFMF2037357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2854281663ff2dc478bafcfb7fbc1d7c86bdb7bc05e76174147ae1123f7bdf. 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/QMBZ92035681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9534ac9544b2b5945c4d96b70db17473890ae626673d0bf8af977ae823fe58b3. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/QMBZ92019534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3381d4e2dedc29d24f555e6e6d20f530cae953498717685d1b44c865dc298291. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QMGR32055265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fc07b8f0cef0a8a0e4cb53b68a59cc00d246bbd0b13b4b61609c39bf277a3b. 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/QM4TX2459141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a2c8fac8bca48a20c8e82aeb66ba4993f71d8e4fe4ec2038125f290a22bb4b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM82100691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f8db27e798089c9c90d97d884e22e58afa0e181d1f5aa6298ae07200b41ae1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMTND2000169.