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 0xba5380fdf5a14b32a0aa636dd9ca5c364dfdd6fed3fd6aaad312552add00fdc6. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f70273f3-2640-4f7a-ace0-ec05d7d6f947.json and https://artists.proofprofile.net/proofs/artist/f70273f3-2640-4f7a-ace0-ec05d7d6f947.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Purcelușul Ghiță - Se Salvează de Crăciun
Crenguță de Brad Înghețat - Colind de Crăciun
Anul Nou - Urări Muzicale și Mesaje de Sărbătoare
Zilele Săptămânii - Cântec Educativ pentru Copii
Meseriile (Cantec Educativ pentru Copii)
La Săniuș - Cântec de Iarnă pentru Copii
Albă ca Zăpada - Muzică și Poveste pentru Copii
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 0x04d6aad3913c3ddc988e944fc0179c502dd2c74ab0c460a3d011c09ace7a3b37. 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/QZTAS2598247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60874d3036db4c1487155b5dc32434f52c473b0db6957920e56d4ac505e1bba7. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QZTB72502101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce2abbe850c2e160acd35b101254374e980e37dade53a4b173190c96b558217. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZTB72503955.
Tanti Olga din Moldova (Hora Gospodinei)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2b3a0d423be66f0ba9372bbdd293033db07d352eac94a41488fcb6253bc4f3. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/QZTB72540168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48134f2c5858103fb85cdaa8bb6a9ffa7f8109bc0b1f707d3ff54edad04885c0. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZWFT2552878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21af5aabc297b73bb051ababbc6b16bbad6ab88cf0c4fc22d98b9497c51b8619. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QT3F62510654.
Hai la Masă, Copilași! - Ciorbă și Papanași
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53c922666b6a12f1d338d74ddc47f2073f50d5adace093a3da9a1d3d2c04ebb. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QZZ7R2542946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f8b49530654a81d88911fde4682f3af29fb69ad2895210a1c229495b1f9d39. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QT3FA2514440.