dětský pěvecký sbor mateřských škol v Chlumci u Chabařovic
{"copyright_id":"0x82e2e0742e61fbb8305224c24c5b78567954e344a73d5eb886c03a5a33db6aa4","name":"dětský pěvecký sbor mateřských škol v Chlumci u Chabařovic","registered_at":"2026-06-11T18:07:48Z","symbol":"NIM0086452","token_address":"0xa20b6b0d2ed5f2a3b6f41eeaaa8e8e4f01a2b0e9","type":"artist","uuid":"41f872f8-e120-449e-b755-aa4ff1771592"}
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 0x82e2e0742e61fbb8305224c24c5b78567954e344a73d5eb886c03a5a33db6aa4. 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/41f872f8-e120-449e-b755-aa4ff1771592.json and https://artists.proofprofile.net/proofs/artist/41f872f8-e120-449e-b755-aa4ff1771592.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 0x988baab46525cd4a09a89163bd0eac0330feaa43514ef7902b4f438d508da541. 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/CZA162000813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8a717a51ec0d506d8c517eaf5d88dfd19c7e904fdd0d3932396872a14cc9cf. 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/CZA162000814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0486f3967ac49bd208d1fac92b68925ddfdc01d4934bf6282a7511b79c250f. 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/CZA162000815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9e7a55fac5792f91ea762be05c35e92c8462420c08fbc16ae94e4285c9529c. 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/CZA162000816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6939e7c6f17583c3fbcf9faab4b563aba0916cfbe1c962ea305cf5850bf6c767. 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/CZA162000817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ff54c8a6b4a576d35f3d6d9d70d6937909f1042bfe3176b1076b53c0b1a10d. 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/CZA162000818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60164a8a6fb22c475f062079fcc42d24443a4ee8629f7ddc8e9d564ee4732051. 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/CZA162000820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06999668548fabdd2668b923d40861f6afaef70ac30d7f028ed5aff54a8e3cfa. 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/CZA162000821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24548df7cc5b3e63d74990bcf4aef40d18d7bfb6937be954274e1a470895db76. 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/CZA162000822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede742da37b7153b526c3960694773b8ee12164308476f83ead14b1fec1ed0ee. 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/CZA162000823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039dcee59f4ef634cddc3102156b12b51fbbeb7a6b9dadcb989da20609c53bf4. 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/CZA162000824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe475b0064f91d9f991ff3cff0f26369adb63d75bfea209f56f553d20ed0d817c. 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/CZA162000825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51b155bdd0cbb506af27b514ff9ef668f6d75608c0de6bac3530dcfef7d0ae2. 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/CZA162000826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5145687f4f776a8d1554cb8db7895dd29f461b4192ca97bab8023d8dffedf7d2. 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/CZA162000827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfff61277935bd4a5d87f6a717fd7cfbf48737cd05f3ea1df09fdf06195d0c70. 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/CZA162000828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90a35a0ff4593872877ce803c232dc37b452bd70d57f7ffca1dc877f9b9e712. 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/CZA162000829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c78641df9e05fa37d58c0d518e71ac6ab85a58259fee440f875cde18694d4e4. 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/CZA162000830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96d44bc6dc7fd0cb1d63ab4d4db1e33e23ec36a3b321df92c226387117fe5d1. 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/CZA162000831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7fd09fcade30b504c8326b1716b16679fb072d47f25991b452af4e7a994e31. 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/CZA162000832.