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 0x7d9193a36d48370a1588a5821430677415822ec6a389726b76fbc464719064a1. Chain 2 (Bitcoin): anchored in block 953970 (2026-06-16T16:09:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/29f5db77-4f5a-4dec-90fc-c156ce5dc46f.json and https://artists.proofprofile.net/proofs/artist/29f5db77-4f5a-4dec-90fc-c156ce5dc46f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lesz, lesz, lesz (A 12 legszebb magyar irredenta dal)
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 0xff3ef15332ea544a54511ad6f136533718e11072eace415c0d106358dfe8f443. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HUCE82200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38351f936169f8f5031c34ffe763b7aacec447c7eed29cea31535bbea987600b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HUCE82200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8380c7508e0315f28c161b299528bb5dea2545b1e59199230646dc7b7cbe8260. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/HUCE82200011.
Földlakó (Kardos-Horváth János Dalai Kisebbeknek És Nagyobbaknak)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3711ebd3b34c2a78a5f2d2770908d969a8ff113127b27b473337684e65f74108. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HUA500900501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a5fc15719ae744f3d4c4abbeac464ae3361fca2427f1f2d30215f80b7ff117. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HUA500900507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab3a2a3331316245943b4e663c6f72952874e2a9ee67ebf1df246755ec32eaa. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HUA500900510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e9b5e21e0ff25f4bf7d2d752bd559d9eac1bbaf868a06b41038368952cb0e5. 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/HUA500900502.
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 0x472cb3002c062830ef074516a117c3a662001da96a90857c459edba93bd661ff. 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/HUA500900503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ba0256c3b58a145d522123fca8ee1513b9a24ca696355fb607642e0e56b1b7. 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/HUA500900514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08891d90d3c8f30f710d652362fb420391157514021b3a80188c7f910ac38a2f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HUA501500565.
A Trabantfejű Nő Utolsó Dala A Szerelemről
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a0bcf7933c4f37144ecfcb4547a02e4eac10d4c1669ca199e47260454e4f9a. 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/HUA501500566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a57f5ee1971f675b4c67263d9d53327864db419ee66f669e7a95f07e129c28. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HUA501500567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3def8e061930aa561e21abe2db9f54397a4ce15c0c2f19a82f22fe66b7db74. 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/HUA501500568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf867c3b7db803a72e427bd8d381650fb6ffd75fd91ab49d8a6d9e85867db7173. 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/HUA501500569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c97f7a7d738fa1211c3618b3bf66dbd2a3e59233da04c2a1fe60034946c521. 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/HUA501500570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2495277d6b1c9fb1f766e042ef517b0056046809291672287762c205ff7f71. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HUA501500571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84eea8ad6f0a3d785603eff2ea89549f9b5a32602462083efdbf8f8a25c20f4. 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/HUA501500572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fa8f63df0d7eb720f70e021a0aeab4050f38f23214758828443552b670a673. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/HUA501500574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7756a90bce5582d0ba43877675e26c6a3cfd80e82e55f0ffafb5be722aaa4ac. 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/HUA501500575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf624878353216b7b633005a87dd0e21395b75ad8bba6d690497b1562a5ab7b25. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HUA501500576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e59ab5a742f0b7c7bc7fcdd8e2cf31b4608a03f3e69f80a2a7cd967502ee37. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HUA501500577.
Van Egy Ország - Tűzoltózenekaros Verzió
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc9f43b727c15f4f639780bf0c10dc71a5596857d70a0b3be78a0d851e79146. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HUA501500578.