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 0xef30f17cc8e49298d504a24b6a61e82104a9ecbfbeaf744ad382aecad637f3e3. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab713d48-7805-4faf-b78c-993c68e99018.json and https://artists.proofprofile.net/proofs/artist/ab713d48-7805-4faf-b78c-993c68e99018.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 0xedccb49955f505db292680acf9d560b9b1a2ca8e78a2028735f03010cac1b6e0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/HUA181829401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb697706d7561b6e3e9ad7088f85c411b7bf55f3b9b8d5bc200bd5003a0ce9c64. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/HUA181829402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757031776350d5cece83f944dbea20011a499519106c6a5bbe64c99e6c362180. 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/HUA181829407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84993a7cf56fa85ad423ffab0316b1dffeafb0c4c1f329ad26037bb969082e75. 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/HUA181829408.
Mi Vagyunk A Grund! (Aréna koncert 2018. December 29.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fa3d5ac3f0b6219032360021c1eede3ecdc13a471e87a329f2da13df8a42ca. 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/HUA181932503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8dd0d4c311067effe55876d3fdf18aa184f2d69ed04606c0f7f73fd1016b1f. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/HUA181932504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb2e7a7584a17ba0d25d64820251625c1193c92df62c4bd442b548e90a7c760. 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/HUA181932506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ae61f5fbcc02d770c10c38cb511b0e21fc39c34542a5f048eb205a4e36b0c2. 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/HUA181932509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12178d5db43987fd1213ec9284a9206964fdcd83af8e65387395eaee98f024f3. 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/HUA181932510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97a7a9207955fd4a52f8f9ee01573e7e0dca718a8bbfdc2b37b4e29dcb4d78a. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/HUA181932511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46cc375edfb7046b62068b0c2f942a2068fea152ca879c42c5d9aae87bd4632. 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/HUA181932512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238ab914cf852db7d035b332eefc79da1f93b76374badb2b5b04187db7602653. 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/HUA181932513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ef9dad081997114ecfac4e9dd7d1fa5886cf5efbd209be72b5c7a1d847c2b3. 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/HAU181932514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d9b142d40fc0dc7edf83c658a238aaa45dc1e2a226301f61fc20aa9c905d8f. 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/HUA181932516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7075a544d272ae26d329dec28bfb53d5676e3bddf27251a66bd4ab3bffcf742e. 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/HUA181932519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb11a6aaacacdcccea2f72e55dba980c56c2f46295fae7e52f88d7a52a84dd81. 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/HUA181932520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63fbf3319c720fcc65f142b52d11c0358152b4007a33bba2b6707f3c8de1b71. 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/HUA181932523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90fb7edd8ee6a7310206d540c2722dbf209b3ae8a9cf6264df49f103976c251. 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/HUA182015201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11dafec2d2313340694698bf0a43b8e800a2d6ba3848fecb843c5b004c877673. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/HUA182448511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef83b974af140cd7cee6f99ad0a5fb214abf1056c4876973f10278b2824801a3. 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/HUA182448501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a70bb298eb4beac0fbc787f1adb74a2732e3124b9d5161dd0cdbe21d820303b. 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/HUA182448512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c9c693eae98974afef8e90202e33b3316112cc8ed22c6070c0619e2666dadb. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/HUA182448505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf08100cad73f1fe846f130c814ea15d12eb806752442446418dda49a301b4c2. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/HUA182448506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36afd064d2b037d626b6fa5daf9dbed065094d3ae6127240d6e13ddb82124f5. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/HUA182448503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8d104786d3d341184f094fcd1ce94149e97c439f44b09e41eb4d062d232ad8. Chain 2 (Bitcoin): anchored in block 960430 (2026-07-31T16:09:41Z), 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/HUA182448502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f1f1e31cf382c177bb4bbb9af306d45f5242df5f7ccd50b5c62da6ff20c403. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/HUA182448504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3d647672b72edfa6d8d94a0d0c4414264c710680f62b19742b1b0089fbe2d2. 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/HUA182448508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9792d38f343fe15c6bec38ddd0546145e6acc79698db33cc3f7a5d26668d3e5a. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/HUA182448509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d5a9dab2951f2d3b7a9e424826d839a303f47d6d7cd475875ce88de16b9bee. 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/HUA182448510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e029b13dd177d3d1f1b312fa65665c0df06acf044593c3fee6dfd5431ffd6ce. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/HUB881707112.