"Bird of Pray" is a song by Ukrainian alternative rock band Ziferblat. It was written by band members Valentyn Leshchynskyi, Daniel Leshchynskyi and Fedir Khodakov, with production credited to Ziferbl
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 0x95750514ed7596f0e41904d19b61c8625b48f44769c41383d7c01be7c1c8524b. 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/49869911-8573-498d-ae8b-909fd51c4449.json and https://artists.proofprofile.net/proofs/artist/49869911-8573-498d-ae8b-909fd51c4449.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 0x3f263b2cc6f6290efc8cdc3b8ffa12db3954064a2d4e11d49e27dddab26a847b. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DEY340401517.
Ai to Shu - Grief and Sorrow [from Naruto]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8eba2fdebc10c9debcae0a6775c6ffc8375d60ab20346afe3ad6c42020a09c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEY340402142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeded19f2be92fe39f9cbac43e1754f8be4712ec49167bbb0b7846eef937cb5c1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEY340402143.
Ai to Hi – Sadness and Sorrow [from Naruto] - Short Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc078ce680b2716280d295a1272dd629383547e286b969008a39987eabc9edc. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:31:26Z), 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/DEY340402144.
Kodoku – Loneliness [from Naruto Shippuuden]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb859ed54cd8d61001e225dbc8f6def245982310fc081e41300194af6f921e9b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEY340402150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0163398e63aaa7c93138faaa2355c86898c3b789abe5a8948fc9d103b265d75a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEY340402344.
Samidare (From "Naruto Shippuuden") - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf978f49bf1aeab33a9d2a41aee777bd5c9bfdcc430afededdf637359dceb87b8. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/DEY340403988.
Sadness and Sorrow (From "Naruto") - Long Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9995f01c6cfd831fce6ad5af1bb4f40396cdb2997cf071b4fbca1c04f77d0f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEY340403991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359a09ebf7f3fbf4033b01a8ff58d67cf1d267aedacbd5cd0d12e47c49c986ce. 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/DEY340406909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3912adf54c6c7638a76137e528111b553eb65aca94c2560bc2d255f34f25dd. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEY340406910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35242acb3f71127a01c941a498dd6478969aef5228dc092984e867066c61d270. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEY340406913.