Andrei Valeryevich Pushkarev (; born 15 March 1985) is a former Russian professional footballer. Club career He played in the Russian Football National League for FC Petrotrest St. Petersburg in 2005
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 0xd10566986fac2e71992b6a130d1091444e3cb4b68e16b2b1459bbbaadb687601. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/506e892f-1766-4397-baf1-da995bb08e68.json and https://artists.proofprofile.net/proofs/artist/506e892f-1766-4397-baf1-da995bb08e68.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Herio Bichebo From Earth, This Is Your Son
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 0x3b2acf70ad5d2d70651834807b99d506951881e8eb6da0158c9f807c847ba0de. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEB331018801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629b195a46dcdba119ff823e0ad12adddfd7be9515ead239ccd59c2f2dd025cd. 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/DEB331018804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd968465eebb55b4bdd418703f14bc8ff18d964c80e7dac0334c43aec65d894a3. 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/DEB331018809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524d4ecb5c6c449cf3eddb2f683d433e8bb46ced182cafcde9d98db61deb7b69. 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/DEB331018813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271ce0c65588c7bd7d455be1f7e3eeed8a29a61970346cafc7e87ef30aafc4fc. 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/DEB331018814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc2a13bcd1ce87b1c03a510bbb24bde63bd71553e7556dd01206c9bfb953e45. 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/DEB331018815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc153f6a7f8a2fcf469dfb4aa2298b77f00979ccf4f7665a36c547893b7b1ea. 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/DEB331018817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f96d1b38c91a58a1f1447fc276f860a6207ed65299ed33393f0b9e043910bd1. 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/DEB331018818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bff1e65a08120721dd586c08ef70ff0c2bce222495536a812f3b4344302fa8. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DEB331018802.
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 0x799f0b6e30e13246c549a2c9bbb4de6c4cb56b935cb913d942adf4631b5b23fa. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEB331018803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46c1104bd070e50c426c98ea256cb717eb91374b68b95c8782cf64f27151094. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/DEB331018807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1b34177128974246de1e7964884232076e7342b87bd24aab9c690f7a981ded. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEB331018810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3848c519306eb77ca4d9df8730cf61939c68e689a44ea17f282fa3b2ce8aee. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/DEB331018811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c4e0e88d0695554157d30edac8651f8d655b86e2a99421c73cb0554720c509. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEB331018812.
Songs of Fate: Weinberg, Kuprevičius, Šerkšnytė, Jančevskis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9972a777dc616820cabcfc5165c1fd10800bcd976a12f8a0efe27a7f5c405def. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEB332274511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3b24492716c0a594aa67b449bc7a6dd73391490a490cf27de82cae3e73e191. 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/DEB332274503.
π = 3,14 for Two Double Basses, Percussion, and Recording
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33846c05a629f9adc25ac173bb667d51245270330a5d35c8743881e623b33538. 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/LVL152200823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9895dfeba166a315fecc91fdebe4fbc971e2ab43e84b8e5d054815dd7c5341. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/DEB332274501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9993bdc29f83f161acb33bb0963c35661d56487e81d0c649d5ab522085ff2b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/LVL152200819.
New Seasons - Glass, Pärt, Kancheli, Umebayashi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817b847d505fb2662b81fc9a17ecbad7a80426c85949fa2c03b6e4a25b464574. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEN961304990.