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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd7ca14800dcce02b2669424d3eeca77f974d70f65a0dddc2df17e66b7156cb. 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/CZA167200447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2636eacfcb46d2e7366c9333da2209cd02dfb22a12cc87f9fa08de77f9b9772b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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 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 0x031288f86cbe3f19e1cff26d36ed710e20c657c52156dc8fe501baa0220382f6. 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/CZA167000432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990ff9f2e3a6397db8caeb78bf764aca4d89a336f62897db7255217f0c4944b0. 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/CZA167300386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dbc920a77cc0dc9393e80c973e7f4508b91cda49b715c84e11085f287fa166. 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/CZA167000453.
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 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/CZA161205426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8708ee8d62744664c5e2ef2a8f3dd3e1cfddc8168521d84937c3d84b98be4bfd. 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/CZA167500500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32c8ce58843adadcb1df578dbd2623a3003b152184e932da5c61908dde79759. 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/CZA167100410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8896f93fc0ee7cd837eb0a6453ff04332fe5255ab1bd457690d96d36b7bfe640. 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/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 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/CZA167000432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4db67b66938232b75d1dbfd3a5ca8317ec5da0ccfdbf5d4179b98d4d3f4403f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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 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 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 0x82d00db7a7fa71dee2b9e601ad2071a1b402ea080b970109f1f78b6f2fb335f3. 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/CZA167800415.