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 0xa1c1229f4e035f2cdc1e74aa88ac50394d5b894e5748719dc5b3435cbaf9b6fa. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea4bdf4f-3489-41b2-a125-f351c3e66aee.json and https://artists.proofprofile.net/proofs/artist/ea4bdf4f-3489-41b2-a125-f351c3e66aee.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 0x3c60fe7a553d5e0b8f73c169930c84b8466a490006b643f4a40c4b4924619f43. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEPI82431543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aabb95d186d951a3941082cffcd4af8409478a8c220df4bc9992e57ae9976e0. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:20:06Z), 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/DEPI82431839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb0bd2bb346d4ff79df549b333f6dd9c1180e325b164aa633e7206025ea8576. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DEPI82432005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb71fe735a5b4b188e6e6715adbe0a0d2a3c4c1c196a4707ff0631e74af68fdd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEPI82432317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe840549e4d37c6aff95d725f959cf2ba8270aa85039206ed20b817bcfd33744a. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:59:17Z), 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/DEPI82431891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286761811d8ccec85bc14041a08827e898bb7b3c2e36ac31dc87e07c719ef95b. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-21T22:56:27Z), 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/DEPI82433063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43244c6855c7af8dda8a205f5385b210c6cc1b6a22549408f4ec285f90d4a675. 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/DEPI82433422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d98f49ec4596007cbffa4409368b828ec501f59c3a687c51a6bfce310a63335. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DEPI82433418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56151b8779e0f47afc0f0b4f2a28836d79e74e1b13617b2a47181e6d03685d7e. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:10:40Z), 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/DEPI82433262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e824ec0675a73b1b4f8f66cc6f110c7cd75f99c294dbb0f7568400370b734d. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:03:24Z), 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/DEPI82433395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a652fbf39d87e92b39f5bfdf13baeb54332ff48c7bba15be14aeb2a857c6a67. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEPI82433412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf20655ada49e8725962976a620857accdfa7b8d7f97115f73b7d07df9e7380. 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/DEPI82433626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b448f7ddc40688f96e1098ee2a913f15980b0924af2f2c1f45a572f68b9687a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:03:03Z), 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/DEPI82433624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024a1de6309d7f371620e3c55b423e2f4806ee2eb426cc44057fa22184d9aacb. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:45:41Z), 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/DEPI82433640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7218ce8184807a211155556621c09d489aa4e021df15a684b040b75847ebffb2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEPI82433637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc9a17cfe73d7b8e286342b1ff1f86c78068d611b9a2113134387e20a9e8afd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEPI82434756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46c8f7cfd70b64345d598aa73976547bfc5455521c3e2fd0202e37513801484. 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/DEPI82434766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3520346bf404be53392ed903c92e8486c344dc7de88a78fc6448440565b700. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/DEPI82434763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde898755550dbb0e370c4c61b0b35d3a07b8ddb4703463044a68d480a8cc5b95. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/DEPI82434332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2604335b0c5126ab507e229ac59bb0b19ff1cf08f81ec2ce443dc96c294c1de9. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:11:44Z), 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/DEPI82434754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb8baecff58fbccfd82ce483eec701e10605374297a67e0bfd8308272c71633. 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/DEPI82435035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a56259aea1ce27d0dd92ba2db39e06a439ad5d62d1a596085dd8fbcb12da83. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:00:44Z), 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/DEPI82435034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6370829914e27eac94c4b3fbf32cd2dd1cedc3f83e85408e200015e16fae2a8. 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/DEPI82435031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c2dab6e40769d22f7dd0a91e76fc0b37c495096bbac33112d12c2262968058. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:49:04Z), 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/DEPI82435036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce078e9a752fdab759cdbe2f23272bf483eac41b6a6f4271d6a9fa245d25f601. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:35:17Z), 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/DEPI82435033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb2cedc3164edd0684f3cb84e65f860c29fce96a9c8aa4579ad8ccc65793206. 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/DEPI82435032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee402d38dadde8a44836991665c14975a511fe7f3b3ed6680df853ec8010d4d. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DEPI82435030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511e026279614a20f9122e496a2701f8a8d9f58a007f4267d940d0aef85d13d3. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DEPI82435094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9584bca4c01428852df7fb9877b0df2dd839febedff14b579e83664209af3aa0. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/DEPI82435093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3967e759f3ea268b548a36c8edf2f1221d7782816f9f1e132f9debb7ca952ff. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T16:07:13Z), 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/DEPI82435092.