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 0xbca88b134b2a941eb040d0578c6014e069f09e32a7dd400495d3c059ae8e3eb7. 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/43dfd0c3-136e-48c2-8b1e-2b078204c856.json and https://artists.proofprofile.net/proofs/artist/43dfd0c3-136e-48c2-8b1e-2b078204c856.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 0x67bc67acca1232744aa3e6fb5e3c5855ae25d7aaaecc8c923726d6138d8eeb04. 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/HUC591500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec058eec2921feaa035eca126f3020eb97599ac85602ca24957b36bcc538768. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/HUC591500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2afae1ba55d932acbeda1c7733c6d447ee6f1df56bd5c34d428550a5d82ef9. 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/HUC591500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7735ec546f7be6b64de7b5e375d415dff37a209f6727d90cfe6bb5e9b2200367. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/HUC591500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92c248f36df5cd4c06db94eb4386d07e4df4a756704c3a848bdf7a68ffcfc2b. 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/HUB351200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034b18872c7307fafc92f4606cdf2da1e916e3c1a3749030be64ef72ee4c1879. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/HUB351200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3829fc3fe5975b2dde5d3f5456ac12623cd657a23fce67654dda21641e844a4. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/HUB351200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a26e9255b4ec323e2e00f0ba2ee21cb7be94b23998e2498fb62ad6e8ba2b2a5. 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/HUB351200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2b5d0fda340cd1bd26d2b7ab5f8cca8c4deb4f4a8807cede7393f4f53f3198. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/HUB351200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3e08c8ae47d74150b02245ced6e18312e4ec3cfaf50dc791b2d1ec87bca0fe. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/HUB351200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42539b6d0b7b72fe9c1551c0a6a8f1b4bf956732af2c2f65f5acf7a03676847a. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/HUB351200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc73cbe4caafc83bb506bb04c96729291cc39242dd69f7fc815936bb1917bfa7. 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/HUB351200050.
Ezer Évnek Egy Reménye (Dalok Szimfonikus Kísérettel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c40bc56a16c2343ab92bbc8ab08361dc532405e78831d0e75689f9e8d65e593. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/HUC591400489.
Tizenöt Év Gondolatban És Dalban (Jubileumi Kiadás)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db9a7876fa80eff274ed217b166dfd163b13a04f315d4751caa7f9744216d2e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/HUC591400700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c75ed39f6dfda1b47f16aa21fffa67991a0fb30a874ac7953a9bd60f228381b. 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/HUC591400703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa73f66d9ea4354498e514f54240149bc22ba8b29236dff1c832ef20bdf19b4. 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/HUC591400711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34123cb8a5ed1b54d597727f9760b384929584af3deba72e6994d465c5fd7853. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/HUC591500379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d93d596a9841f93cdfc73de1626d01bde90b1f88c184ac8086264152b88a3f6. 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/HUC591500380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd03d75c738a5b4a95b420dc02a24399a9c6b667023353ca2d907319c50a50b. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/HUC591500384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c6992e24b8463d804793484da4acd4de9503de79a3e45eb55ad5c5d95411fd. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/HUC591500385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2055f383c72f81d3aaab1f198018b0e6281f3d16ff27e0e5e8cfb473ab54f8. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/HUC591700195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3e3b9a6161ee50ea4ceb88fd6b68f3fb33d9c823eb9cadf305ba5fb56e1ab9. 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/HUC591700196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66df5be6eddc1718f9dd11eca82b05e4906c2f708ebda43f16907f1347e725c5. 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/HUC591700197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cd325cc45c71402c9f38a8287b666add9f0a23480d429dccbc3087137518cc. 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/HUC591700198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527e49d2c5e666f6d7cd9a1c50a3450b79c5bea7036642d7da0e92b3f914f2e0. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/HUC591700199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0c5bc0f842887a1a7cc7798b8dc2a40dd0a94d1636a31e6588a870e4282225. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/HUC591700201.
Egy vérből valók vagyunk (Jubileumi akusztikus koncert)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf5a689639a2c33ebe73a59adf2a60329df1a2b93089cadb65ac6e390eb18b6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/HUC592200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b06ebd62bbc0b35c0bb69ee22db39aaeefb3c73fb528bd6de2c12b29eccd35. 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/HUC592200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7200485b5dc0502fc989bb2d60cf55d1435a4a6927bcd885be714ff4bb7c27. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/HUC592200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54e7d6ec9b0f08371c3ec1e98f53bdd036fbdf83104f06506285a5618350fdd. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/HUC592200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30174db38b0a20f27d0193e3778a932c5c6a92d9c7c75e66221cd291d91c0533. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/HUC592200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1722ca45696767899611a76cba2ef86915bb355c3a2cdebddd6ae9bdb466e682. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/HUC592000226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc200f0287562c9923e28aa06509981208ceb69ef45b206fdf5efaf498df07370. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/HUC592400212.