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 0x2866f0bc0b578e95aad79377c9ece29723b7b68fec4b38eb0670f5ae47154717. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60a27d85-de90-451c-a5e6-7dcb7abc23b2.json and https://artists.proofprofile.net/proofs/artist/60a27d85-de90-451c-a5e6-7dcb7abc23b2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Best Of Martha & Tena (To Nejlepší Z Let 1969-1982)
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 0x8cd7ca14800dcce02b2669424d3eeca77f974d70f65a0dddc2df17e66b7156cb. 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/CZA167200447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2636eacfcb46d2e7366c9333da2209cd02dfb22a12cc87f9fa08de77f9b9772b. 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/CZA167400398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc65be51e0b4d76af4e3cf27d0340e3335d5fa962d3279bb6dcb5e6df927cd1c. 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/CZA167300399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91afc14dc61e7e748817da7c47eb93ad2d6ea932eef80cd609c9bead9dcb7b4a. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/CZA167300388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8708ee8d62744664c5e2ef2a8f3dd3e1cfddc8168521d84937c3d84b98be4bfd. 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/CZA167500500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ca36253733745da590f51a45154df358e301a3b76b027b14fa462f1e5d6516. 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/CZA168000458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bbeb504fda2bb4ad938e4531e6fa4000b49ddcf9422b4d9e37455de10bac03. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CZA167500499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031288f86cbe3f19e1cff26d36ed710e20c657c52156dc8fe501baa0220382f6. 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/CZA167000432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc65be51e0b4d76af4e3cf27d0340e3335d5fa962d3279bb6dcb5e6df927cd1c. 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/CZA167300399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990ff9f2e3a6397db8caeb78bf764aca4d89a336f62897db7255217f0c4944b0. 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/CZA167300386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dbc920a77cc0dc9393e80c973e7f4508b91cda49b715c84e11085f287fa166. 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/CZA167000453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0804cced28e284f7342dfa23a2fb4b83f0fc34e838b8a787aabbff806f9f8a79. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/CZA167100415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe6ae5bba8791bc8f2a53ed38cdc37438e73fee12b1d95ec4329a452db2460a. 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/CZA167500505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114afb2648ad18695ed999f56613d24f5777f24b62dae21750e2f9f51115c984. 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/CZA161205426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8708ee8d62744664c5e2ef2a8f3dd3e1cfddc8168521d84937c3d84b98be4bfd. 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/CZA167500500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd652df01a73eb3d2940b5e18132bb41d5fd0dc18f5b38e3dada3aa64ee1ca84. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/CZA168800553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91afc14dc61e7e748817da7c47eb93ad2d6ea932eef80cd609c9bead9dcb7b4a. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CZA167300388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32c8ce58843adadcb1df578dbd2623a3003b152184e932da5c61908dde79759. 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/CZA167100410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8896f93fc0ee7cd837eb0a6453ff04332fe5255ab1bd457690d96d36b7bfe640. 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/CZA168300562.
Jednou spolu půjdem světem (písně z LP Hrej dál, Modré království, Ať se múzy poperou)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd7ca14800dcce02b2669424d3eeca77f974d70f65a0dddc2df17e66b7156cb. 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/CZA167200447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031288f86cbe3f19e1cff26d36ed710e20c657c52156dc8fe501baa0220382f6. 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/CZA167000432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4db67b66938232b75d1dbfd3a5ca8317ec5da0ccfdbf5d4179b98d4d3f4403f. 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/CZA167200443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc292e0bd0ba9a51260fa9f0a1090d7c79d43d74c03f26e1af8689e2af253cd34. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/CZA167300400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaebd92ce437a9c8a341e4fe753ddf7ab5091dbe69145477c2029462cf297134. 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/CZA167300401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe6ae5bba8791bc8f2a53ed38cdc37438e73fee12b1d95ec4329a452db2460a. 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/CZA167500505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5d733cdd92a1234dddb37e111fc5f9842c71faf7e8fc07fbb453f97ca10a23. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/CZA167300387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8896f93fc0ee7cd837eb0a6453ff04332fe5255ab1bd457690d96d36b7bfe640. 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/CZA168300562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd652df01a73eb3d2940b5e18132bb41d5fd0dc18f5b38e3dada3aa64ee1ca84. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CZA168800553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d00db7a7fa71dee2b9e601ad2071a1b402ea080b970109f1f78b6f2fb335f3. 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/CZA167800415.