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 0x77423246663848ab13ba13a73c8c2d7c74602ef8d6854b0a5fcb9d1c1c1b84b8. 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/7a955f24-6068-4543-b7b5-3d207960b8d6.json and https://artists.proofprofile.net/proofs/artist/7a955f24-6068-4543-b7b5-3d207960b8d6.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 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 0x2a15a8a2e0b248b658dd163a9f8d88c64f00b67cd1575d2654d42d59bfb50183. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR96X2076690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815a825bf1131e75df07d4da2c8f42480b560eb8959059899785f4a7842754e6. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZN882177352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1213f1ecde27ac2ce2dd005455f864cfa22c507b364ac1258727ddf0610f6cc9. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZN882246816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45f78211d9a950ed49e7cf15b0d63bee925cec7f52386e1dc5d23c84f59472d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZN882249555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e213022bab3d5f95cebe182ba89acd1a201c441da4b6b5c7c2d609a8858ba1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZN882269149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279e7e19e76510ac46d18f3be34e29ecf7ae56cda343bbb4b62e47a7754feb90. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/VNA2E2210162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd9b348f8601ac2493e7fba0bf14f05910755fb05f790b22ea3374065e15a67. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/VNA2E2313328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d1c78d1374a0438f55cf543b83b95cb1982964a1b6ab3a5d3517010e23b942. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DGA0M2376475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1716249d41d0e6daf236181bc7013a41370bad521d66c85f0e135619ef5152df. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZYHM2416230.
Kẻ Điên Tin Vào Tình Yêu (Bell Lofi Beat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4539ef05dcac8831ff2565f74ab773b1c9c36843d69183ad82f09bb44767b2e. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/US38Y2507971.
Kẻ Điên Tin Vào Tình Yêu (Zang x Lyz Remix Beat)
Kẻ Điên Tin Vào Tình Yêu (Zang x Lyz Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520a1fd50af2f599bbf6bc084c134ee65d132adb05a53901d720c22d541f80ef. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZN882264979.