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 0x449286e5e9e8e99782262a92c88be40c52e2fc426475b4b96c5f962cba6c5c3d. 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/aeb1f28c-b6f8-4174-a3ef-693af0ed27f3.json and https://artists.proofprofile.net/proofs/artist/aeb1f28c-b6f8-4174-a3ef-693af0ed27f3.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 0xf276dba2e24a2e2be797c7c620f6b8ff7b579a054707e9ff8be46f04009f4302. 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/HUB519600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758c626fffafeb39889e1fee16751eb2ec6c6918b91c6887189d86e8d414f3a4. 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/HUB519600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e5573bbd81611330b52179411f7d75e1f6e8027240388fb1e67ef0f6814d3e. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/HUB519600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296a00817ebda986c2dee16ae89ed170da9fa2d514cb973b589dc59788a30f0a. 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/FR2X42218680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb55211ef14abd64df64d2c921f432993fa22e715f6167358e488cf060e5055f. 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/FR2X42218682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cd3d56d65a5b125f4757866d5a611eb2e741b427845df30f9ed27307cec9a7. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/HUB519600046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85277b3a875bace64a8ef320f0a49a048e4d7e903b4c14f166c3aad3cb0dba6. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/HUB519600048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa930327912d68c9d31d51d1db0bbdffa077a107a583eeb5eb84763bc5ed89505. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/HUB519700035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27469781aef77db01dfc8c75f79b83e6bc1008f44ae49f1dfd4d9cd31b39784. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/HUB519700036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f4cb92eb97121acf88204878d62a942f4fc37691734f2d6db4f9872a2f9999. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/HUB519700037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3193ee4b1464e34bf9ad9fd92bdd1bf77674393d147d4084484c9ce83a766f19. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/HUB519700038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cde15763d9416d8be60b8d7a0153dfa59821061872edf142ebada2fa9d0851d. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/HUB519700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf410e9b41a48125007a2892dbd0d173971ed5a978562c51a1804636d6b193e2. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/HUB519700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c9891c44d969a071d07a97ad35e4bfcf2ef2d80105968949002612afa3af10. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/HUB519700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fc174cbdefe49a1adeaeec4d0ad71a189ebdaddea5dc99deca5a58d4156162. 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/HUB519700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc0a71f7b000ac8c75dbc52f3d9073ec23f3c006333a9247bc80a939fd21910. 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/HUB519700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f752bfe2d9d19d97035d96d8cbbe69b2f44b25974fc17636dad098339e2681. Chain 2 (Bitcoin): anchored in block 957565 (2026-07-11T12:18:39Z), 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/HUB519700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11031916990b15ab7bc5a7858c5519506e92ad567b4206bf9e2fa619b4d2be9d. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/HUB519700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179d0c8997db8c3c2d40b4e81b28bbc6e221b05bbb509a09df264f05653e5f38. 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/HUB519700023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22c01b3f5fd98bea3cb5a83896b2d30a01f50e1919eee6df31e59ddd9d5b3de. 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/HUB510000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa5974a62e645d7fd588297ad93c678f67c20b8a7a0aa3a9d14f2713d4adeea. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/HUB510000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524c3d56231c09f3e1b617b6c85e3a0198f62a48fea95d8b819a6b2052bb6e4e. 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/HUB510000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46ba7800715676fe682e0e4292b98124be66fbe4b92a226d1541b9994fd5323. 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/HUB510000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa73c0536635bd1eb7ca95298133839132b45dfe985d2ae5fecf68d41f66f1e7. 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/HUB510600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56d1871fed6c00299833e62f6a3d36553192a2010d76b284f7f3830b1362d37. 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/HUB510600010.
Greatest Hits No. 3 - El kell, hogy engedj
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c0faf1c9b1830f4d14a9d03cdeb3d57d0c82f627e9aa840a15f2fc1a27956f. 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/HUA257123301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4860754911460c692e6a9dcad4f50fab4d57a06241e4e7bb948e6bbcd73164b1. 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/HUA257123303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf038cc5996f39b851fe266110c6e676bb64fdb07a29ca8b39d5409e0941a600f. 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/HUA257123306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c8fa54bfe247300d0664ee00528567a59ca9aa3c1f22ed2e0bac596c22f55b. 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/HUA257123312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682d1e1dab9d6745c1b3962b4575b23d1adde5059c85b5fb36afad3dc8a56fe5. 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/HUA257123319.
Demjén: Greatest Hits No.3, El kell, hogy engedj
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117e4f2de8a440984463e8c905385c5e74ddc2a6475fbaf40d9ca3a8e87e0a8e. 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/HUB511000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ae91ffbb50e1fe127d43a53453d24e7f14b7b9f653be3e69e1c653dfde3cb2. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/HUB511300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2141b70ae7e695d81f28a06ec59a206c8f49395ec7c6fecd46bc069ffcc5d1d9. 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/HUB519600055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac01d0a565e83f0b777116609449ac3949781f5670217ef2efed57e60baf508. 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/HUB519600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6338ad316362ca8e6ff3bc84225ed02582df90eb23f481974afec45bad65260f. 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/HUB511800010.
Ha a zene útján jársz (feat. Bobby Kimball, Charlie, Demjén Ferenc, Jack Bruce, Somló Tamás, Zorán & Joshua Kadison)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22756a218d25d6ae632158a5b6b34aba5d6fe95997e27ee137b7e6a3b138ca6b. 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/HUMAG2200390.
Játssz tovább! (feat. Charlie, Demjén Ferenc, Somló Tamás & Zorán)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e4de50320aa05c3a3dff70d472bab3afb3377247bbcef957db9dad32b9868e. 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/HUMAG2200393.
Csak álmod legyen még (feat. Bobby Kimball, Charlie, Demjén Ferenc, Jack Bruce, Somló Tamás, Zorán, David Clayton-Thomas, Ian Anderson & Cserháti Zsuzsa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e198e4d4592647145f76492afd3adcce8d3aa1024fa5d3e47db8aff94cbf9a. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/HUMAG2200401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00d9723757a6b5a8293a2792d250cdb679cb7fcb7eed3e3eab36ec5e4a35690. 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/HUA0Y1800085.