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 0x174e52ea43ad65a16970bccd877503a66f43a077fd79e77e5f5486b79834a780. 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/b9fb0ac1-62c7-449e-9be0-db3ef21db1ec.json and https://artists.proofprofile.net/proofs/artist/b9fb0ac1-62c7-449e-9be0-db3ef21db1ec.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40976508b43ce2b536fcd60db106642a2cf40a243a0d0120ca576e052dacb2ca. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZTAT2220529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3058c14de66a3cb82ce99edf6905466811d64515bdc8bf8ce3b7e00125d70cb. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTAU2259553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8d11264715429d79d857d00799df18cd2152f65e9519b1e080a6377ff0b65c. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZTAX2206308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdc0252effebf6fdbff7dfde8a4cf488c8f70e168a70516277ef6a09e38e647. 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/QZNWS2361547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67bbdebe60824cafd3b39ab7f35fb23a071f26d06fe8a1ac2433024b4b39808c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:06:45Z), 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/QZNWZ2340032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0ff8872ee67494d16b9b1d80498ee56ab9e8df5101ce94a29059a3fff62c4f. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:37:55Z), 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/QZTAX2383325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ed1431d2e3916c883c653952c09f86a8a1dec2ecde11eadbb3533b4ef0fe1d. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZWFQ2352905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6f47b188d2549c228a149b1c99a393ed464b103e5161d4f95f46a657449940. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZDA52493790.
V 5 hodin se probudim a vyrazim do práce
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e456bbac8c8b91196d6a666d20450493179bd96348a84a6b13eeb9a82138d71. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:58:58Z), 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/QT3F22455905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2752fa69d47c8a47703d39e77ece5f320f80b4b7013fc2df52d54e881a0f1a49. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZWFM2324768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8eb45d553264793b839fdf438519673c75b70bcc863820b45d79af0fd5c1300. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QT3F22455906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff8035c0b0db54d3b548a39b2ff3f3f41454080db37ea901c9119ea3154369a. 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/QT3F22455907.