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 0xf647a1d09cf379487aade0da1bc53a1918d5af00eec0da48032fa7bd5a39040f. 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/afd5d613-ed1a-41af-869d-95373cb5292f.json and https://artists.proofprofile.net/proofs/artist/afd5d613-ed1a-41af-869d-95373cb5292f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Send Me Another Day (Cho Anh Ngày Tháng Nóng) [Remastered]
Xin Hạnh Phúc Cho Em (Adieu, Sois Heureuse) [Remastered]
Xin Hạnh Phúc Cho Em (Adieu, Sois Heureuse) - Remastered
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 0xd2cea48847b69f29d1edfe108a17476e615661f9616e67209492a732f83107ac. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:03:03Z), 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/QM9SX2401530.
Em Đã Dối Anh (Et Tu Danses Avec Lui) [Remastered]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41de702808e637c6de93b5c218d7dfdbaf77ff701e5a816201d64a74062a1db9. 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/QM9SX2401538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd58800927e0d67acde2c14572e439ce506b4870b286e9406250070a2386565. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/VNA0F1700224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddb54a0ae5c598435ba5c9de75a8d1f521dfdb45b3326296a3ac09f48173f78. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZGCD1801389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbed9bc54475781c708b884d20bbd7c4878ae2b2d81edb9b1a6a2a8ebea9228. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZGCD1801390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5079ea52945014a36f51deb8d8e60df9e99871244834e6c700732a109985477. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:55:21Z), 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/QZGCD1801391.
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 0xabb45c33789488aa3e0f0cc974a2ee1fc41a9c7283bfbff210efd55272c0f539. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZGCD1801388.
Trizzie Phương Trinh Phương Trinh - Trung Hành - Still of the nite
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80b6ebcd3025f386de28a818d8f391d7bae5a312c67a5df358f91a3e5f5418f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/VNA0F1735838.
Hải Âu 11 - Mây trắng 4 (tình ca cho em)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcabb26f55cc69ebc654c3feaba9380fb941e78587ac52f776d2524135126658. 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/USJ3V1230061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41de702808e637c6de93b5c218d7dfdbaf77ff701e5a816201d64a74062a1db9. 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/QM9SX2401538.
Liên Khúc Mùa Đông Của Anh, Trên đỉnh mùa đông
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515c75b2a7b0d96eb622cdfc28c469d654eaac3f5399a482729a5bcdd283b9e5. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZGCD1807533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224b2464fd9adf2955b88d0cc8ebeabaaa1cd439e6c929863c536cff143d7d3b. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:05:45Z), 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/USJ3V1230074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3dd8652d0f2a3e99ac6ac5ea68d6b1fecd32a5e6d4e619af5d45acdce336ff. 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/USJ3V1230071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05bb0f5ffa0fc89a99bfe17132a5e29ea2f94bc1e8d513fe79a3eb51ab3a9012. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USJ3V1230066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f28acb476813135e1b2af554997e21af1f35665c41eb911814c4a863286e3b. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZGCD1807484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759f0d09a487333a7f2b2851ec9903578e1843be7d7fbd9e92fd495cea08d223. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZGCD1801500.