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 0x92b75f11d53b0a3d549fb3a6477b4ea44825e1a0eb613c53ad5b15031b236ea3. 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/d19d9ffb-8490-42b0-bc94-433d08e6d634.json and https://artists.proofprofile.net/proofs/artist/d19d9ffb-8490-42b0-bc94-433d08e6d634.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 0x21279dbfe473bc31ac3d416c36a2190d5fcf594d5d27d4ddc9f7418f48228be8. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/HUA611402844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88a5183bb1a5cc9024b84909a229d8d2d6a491cf48baa915b94f011f55e22a0. 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/HUA611402847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a40ecee772bb4ab08406ab3b5d681109f7d724d912c62fa9d9e29808478cda. 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/HUA611402849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ce3477af63ac6005f1293552ac4e0f7ddafa88575664871dab9db362aed448. 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/HUA611402852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8535e7fbbe88fe8ba1fc1a02ebe229f9988b4a82c747f64662df02910434e0d0. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/HUA611402856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d086e0d502f1e12e8d4b7476eec1a0c9459d09835e15968cdd2ffb9cc8bf60. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/HUA611402857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bba95de5ad37ac826ee993112f2b59bf4c8e56d9b337b35035e367180ee4f7. 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/HUA611402865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee5c57dc8623bd69fb4b2d6374c32b80a5a469aeea4be67f475f76c54acfc01. 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/HUA611601335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544d7d19f2976d42a35b5c9a02fc9b5864aa26de792ed522f5b48bfcfe289615. 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/HUA611601338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4746d7be978738a33197bf6adbeafbc4266c71b4c858e6669cb43b3621dcb53. 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/HUA611604374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c1c11bb93b1c427f33d882a84a5d5a1a2d051a7075f5d85747f61eb1ead4da. Chain 2 (Bitcoin): anchored in block 957579 (2026-07-11T14:35:38Z), 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/HUA611902463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2face1f587c712ece6729791b8336d2c7b148502c5ae5f05d367d329749e668. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/HUA611902466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0845d19eb16aad7dfd7ddee94e1f9284a729aac6992605a65a5f35cbc1a296d. 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/HUA611902467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21410eaef119e2e172224e8409c550353c36c54c47e5aea9d195c7ffb767c454. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/HUA611902471.
Szerelemnek rózsafája (Ez a világ amilyen nagy)
Tilos csillagon (Ez a világ amilyen nagy)
Lehetetlen bakancslista (Ez a világ amilyen nagy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706d3fd847ab6daac25a08b45ce5e09b90cc9c34539ead2250fb9b6558f5c0ce. 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/HUA612201803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb9b7575bd5fda340713afdf9ccf8266f02fa424f1ac9302a8ce71128c9a36d. 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/HUA612201799.
Falu végén kurta kocsma (Ez a világ amilyen nagy)
Túl ötven erdőn (Ez a világ amilyen nagy)
Szerelemnek rózsafája - Ez a világ amilyen nagy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0dfd919e3a6965c6752afcfc1f2de4d307823b75d000a57f9efbb6e57aca099. 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/HUA612201797.
Örökkön örökké - Ez a világ amilyen nagy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad1ad2d4060a056581922afc2af8a28745374e0eac05242b9f4a1c5dee57761. 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/HUA612400242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb9b7575bd5fda340713afdf9ccf8266f02fa424f1ac9302a8ce71128c9a36d. 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/HUA612201799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224a3208e1b41e3602564b322e877bd7a4c08188bb150c2eec8ce4af708034b9. 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/HUA612201800.
Lehetetlen bakancslista - Ez a világ amilyen nagy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4b29c6d5381d5ef0e9c621fdd99e2d5c8f76ad016976ae5cd8eab2cb455995. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HUA612201801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3b12d3c7942b12d649779c71f7891ee722451ddaa5d7cc7116bb9d898bbff0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/HUA612303939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706d3fd847ab6daac25a08b45ce5e09b90cc9c34539ead2250fb9b6558f5c0ce. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HUA612201803.
Túl ötven erdőn - Ez a világ amilyen nagy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7965c3be4a395d5672acf3bd91ce521a196f739460cd680e0eaef8dab720a105. 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/HUA612400240.
Falu végén kurta kocsma - Ez a világ amilyen nagy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244ee1d967b7e2922f6aa5772a5a99629f57817249931a4a99da246a636ea719. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/HUA612201805.
Ha nem vagy ellenállás - Ez a világ amilyen nagy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064073e46aee0e65af14489d5f6b98e16c21a925c319d6b5d24261fd2a421e59. 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/HUA612400244.
Tilos csillagon - Ez a világ amilyen nagy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa568c7e90fc5e0c357a2ce8773a3df541ae93377fc43ec7d8ef8e508344fe18. 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/HUA612201807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42838d94139317c4c97bbd303c4c2c13d00a887766d4717a1b8d73e77e612951. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/HUA612502091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd3a3d180117ce6161ba26a96bff412e5b1e105c6383f54be7a9cf12deb79d6. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/HUA612502093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35daf4498c98d0652cabc5503fece34544c39e4d1c581662ea9fe830ce820eb2. 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/HUA612502840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bb153e017edbc1bcdf3b56dda7068df81f4c3d877872630c24513bf7877676. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/HUA612503075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742ca44e4fd35df44abc2a70521f3c597bebfa8f80530cb2921c283eb8177c12. 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/HUA612503414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfebae16288656e59cea6e236edbbe7dcae4cff785a058d28db163f4c83bdc8ca. 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/HUA612503484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e498c3357d9fb1ce1a35903943642cbf5af32164827660b957194e68f37520. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/HUA612503607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273276dcb84d8266679b19018e894120f026870218cd205a47b3a2d405f28494. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/HUA612503795.