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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504b38a330c24a0e26855e052b1d22d82831477b3ca1df6c76873064ed7ebc36. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9eb2c604-42a4-44dc-b808-7a99edf9e098.json and https://artists.proofprofile.net/proofs/artist/9eb2c604-42a4-44dc-b808-7a99edf9e098.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8527e07c97e29549b5865287b59af304934f6d5a11cc8a0f1037dec8a0f9a3. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBTZZ1300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6441fed9fd9cf2fd069a821b2745090744aef2817d82c6011a2d81fdf80fa1f. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBTZZ1300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518afdd083f7360b7c0d2b2afdfa9457a013280ecbdbc9c39c3e0c8b1355e59b. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/CA5KR2472063.
Palace Of Memory Where Nostalgia Is Fear
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b7705536963195bdbb98c7283802c76c4e183d9f4acc72d71012d4be978e5d. 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/GBKQU2216992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81226d608efd57836a64bbe496149abc433eb08e3ab85d0a965be3f471592da. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/DEMM41501050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8301716751ced9bd24b35f0e13dd562bb879c8138db7dee4e3ee6040d50f110d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEMM41501051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20795a9416c8e1dc4c647eadd2d7ee8e65722724fe42d93f8d494283d0007ec3. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/DEMM41501052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa233eaba0927fa49aaa1ef9f0523cb992fce4a9c326ff16ae7e3446d5c59c807. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DEMM41501053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0573b0d65ab8c9a7343e625c82ae7fa75f1a4108efe3964db1f583da22556e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEMM41501054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe7147097c0f8964d311f0d13821f3e3d151e6f450e384326f12245882e23a0. 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/DEMM41501055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb764076653b6ea4b98d30ee5b856cbc6b5b6d3291b78c7720bb38b67370d21. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DEMM41501056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7751567690e9ff9d88989ea35b3486c5136d6626ba930634efdf84298fc389d. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/DEMM41501061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e93b99d82c6ca5b4e2cdddfb2fe74daece3c34f88ee18038890326596bd4885. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/NL8KA2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd0466fd24f7fe1c3894a4744eb0d718e9be36f1b8071c7020c17213e22fdf2. 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/DEMM41901181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ff011637c193c23899e7e8703f2e2690b3cb2a93d319fe0fba79dd7f8b7357. 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/DEMM41901182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc9b9370f155cd124b14eb039f0b6cc29689e99e7e2bc9483aff9371ec4095c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEMM41901183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4603ce235fb3d7ca17de5d0726565a702edb7730121465514214e052ab026e. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/DEMM41901184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fc8db86d4d699e2f993686947a861341371bcf0fc0e17d66413b0fbe49e2c6. 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/DEMM41301303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33597454823d8bcba43b247eac8e1b68fd51f147629a9b135d8595352baeeeb8. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEMM41301304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac36e5ca9e38908e571129ceee54793c57ee1edb001cb8008953b397d4b9a7f. Chain 2 (Bitcoin): anchored in block 960231 (2026-07-30T08:33:28Z), 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/DEMM41301305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf799cce3d75763ac47c792117ddac92a814476143e686593b628f1961d508ecb. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DEMM41301308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136e7e62ab5178cd5315dfccf67abcbd29ab467edec1f0d34c217f622ec163bc. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEMM41301309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9643ca676cd30d90ea599f63bf56ef44c0f6d0a4c8d03bde00cf36ac4d1c843c. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/DEMM41301317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3699c1e9535ef89554338d5bad09167965996815e9565c63548a0e9738508928. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/DEMM41301321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612c0889bd23494ba3c01cc07d31fbf89f54fb50ac65762f02e8124c18512e31. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/QM4TW2505910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea108612b68dac5260303384451d4a72ffc10e9d0fb6b8fd0f9d173bee2b0a50. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QM4TW2505917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548fd8cc6782cbee21735668e6a02ea5207e2d41b87e9c4373962dfa5ab116eb. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QM4TW2505927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0b5ffa6464cd68d96e8de1b12a024510e3c86a20bf7775cd004bbc9c533599. 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/QM4TW2505938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c5a1996a9acbe3d6a483c966596106d20d8f9869ce94f1e14897f425c2b8f3. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QM4TW2505940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e41ca9a5bf1ae6c08048c926485da7f55f4209bd5476deb7e5f0579ed32748. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QM4TW2505923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039093757a87fc6d6fd145b559bfb0aa0045704c9eb2a1f6e43115f681dba79e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QM4TW2505953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188e5bb6684ef52c1dc59bf26cb491bc1c5b0b5d22d423b47dd2227300a3dcfa. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/QM4TW2505962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f844d8af25b50b5cf788807da77cfec5dd54a902dea75fe06a4bdcbbefc72d6. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QM4TW2505963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6269a44feb3065b50246ce908f48af88d048b010f1839f59b07a3733f0ae36. 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/QM4TW2505971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c864d0aa69adad109f5ba20178b8e192bc48a62378b47d74ebd47997cccd5a. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEMM41501130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc5e3c66efb5dffe1ee903141c1ab708ea88b822b6dfc2bec030dd285b5d851. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEMM41501136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505ed72ce31111c7df3ca70bc2c5b1103a77e422531a43bf1731b2687bd3b95c. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEMM41501138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30281157c5de8c52d7ded5a75c7ac8cb6fcf2cbe13033efbe66f8e095128b8f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEMM41501143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77aeb9d4e972b43af5ad776503eb096b91b497366b6c9473c5350b3b9a0eb3e. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBCFB1700038.