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 0x15c1985af60604c90eee96d278a2bbccb4c2d47a2e01e9eb88f8913c5fd80f58. 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/806c4fb2-f3dd-44e1-83ad-50f606a0cebe.json and https://artists.proofprofile.net/proofs/artist/806c4fb2-f3dd-44e1-83ad-50f606a0cebe.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 0x81052f111b8447cb72843770e9d3764b6325e9fa8532b7950670db3dbdea2980. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US38Y2436184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8156949e749011a95a4412480834c1bd53055252249e377eba0585663b1a42d8. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/US38Y2436388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ab554981359c79d2d35bbb03d179f514233abe53775a9b9dc6c00c56a842fe. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:12:37Z), 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/US38Y2503288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5b3459004c6a3f824e9bde5ce930299c879418acfebf73a3da9a7a1baf2b0a. 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/US38Y2519810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b92731618eacd7044542b38e9ce8732aacfbb6a7bd080a79ee67d4bce6c2a3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US38Y2523454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a4730b619bfcf88f41075429639f01e6c0a8a3089e26b081a91dda6b48fae9. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/US38Y2523539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5743c0b64230d1b905954d0f963f94b2fb8acee827d0ff245ec1ea2860180df6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:04:30Z), 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/US38Y2544684.
Còn Yêu Còn Thương Còn Chờ (Lofi Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f33c1a5016a4f956ad39901eb4a7922c595a2887e9c2764a98d31bf0052289. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:55:28Z), 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/VNA1M2406580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc29035fd9143e5e27b7dd9c7dea7c71d61b8d2052c32c9c0888368cbc2b5bc. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:46:55Z), 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/QMFMF2515553.
Đừng yêu một người như (AM x LUNY Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514e2567eff948aaebb4a4b1f2ef345cce4796ce7cc43cb336fd31508510cd04. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/VNA0D2401395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d01e335a30a113d955a22521abc1637cf884a5527861278aeb4b4a3c9d3bee. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR59R2347782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7cf264fe06682367f1a4eb5f823702a44c1c408d337241c887b77f9d287a05. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/VNA0M1811403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f31174bdf45828649eddb20f69b2cc39afd1f44292ebfcb18e37a2805b4eddc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SGUM72000282.
Áo Cưới (Original Soundtrack From "Cuộc Hành Quyết Của Yêu Nữ")
Cuộc Hành Quyết Của Yêu Nữ (Original Soundtrack From "Cuộc Hành Quyết Của Yêu Nữ")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c052936ffecc990adc32887ffd3e5f6541dec9edae5b0dd184ee2da0730939. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/US38Y2436030.
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 0x94b0cc92c6d18903c70b5a476f982fbd0a75eda25a19f1f13fb0c259b2f8e64c. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/VNA1M2400938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f11dc539ec19eb73b7868e0f079c28c90a2d66904d3950fbf230bb4f8f88e1. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/SGUM72100002.