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 0x15af25f61ec57924a7cf4dd63a8d105753a865ed3b05548d3bc2da3b0e324142. 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/6a5956cd-7491-42eb-9d02-08128e7a9a5b.json and https://artists.proofprofile.net/proofs/artist/6a5956cd-7491-42eb-9d02-08128e7a9a5b.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 0x676d33c1417596e8c33dafbb1a519ce4b5e73aca03fd684541e43e687426e98e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR59R2202651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdd5948eb6821a7db42b211830f9bfa306adcb99c32db2d610ed5ffca627081. 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/FRX872152123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfad49c4731db3688d7bcd49cc60b383cbc8a8c63a71991ca720ad1081299fb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR10S2100725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d51b2569343f45d39765c19c015d0fecb334c5361e98ff266cb92b6ab0cb4a3. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/FR10S2100722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754fd25f064b34e914527a6389a5a516970d40d432aa4805b416c46769bc888c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FR10S2100720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6b37c77aced62163bf2dec32fd848f57fad56f1a1aa3e589f6f95ec912cf5b. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FR10S2100727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa574a8c406894f2d16485c3f41396ca04a10bfccbb6ba9ab454275a539823019. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR10S2100730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b3d63146702d6ffbc0596b5dfe3770ac0ae79892896235425d22467714e507. 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/FR96X2193570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb07c50397a83138f17951b6a56a37ebf89b1d26726998e0bec5b8266bd4aef. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FR96X2116969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74eba42a0067e129e455246e50b4b8ececfa5a88c37cbc73fecd670e71c76c38. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FR96X2130960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d32da3867489a50e1be617a6b918f88b5f11395b65deb9f0ab18842ac009256. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FRX452145641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd447758c68b64330576358f6798f438363ecc3c4aa116f9ae1b4861b91515a2a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DGA072113573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd106d1457e3f0831b22bdb56c1aca7a192c98436cb1ca78095ac001f32a1ca28. 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/DGA072113578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91709e9604591d101229e61dca4d5b7c9bec17ba04ad2c7f029ffb25bee65a5a. 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/FR2X42144434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdd5948eb6821a7db42b211830f9bfa306adcb99c32db2d610ed5ffca627081. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX872152123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676d33c1417596e8c33dafbb1a519ce4b5e73aca03fd684541e43e687426e98e. 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/FR59R2202651.
Anh nguyện chết vì em (feat. Star Online)
Người Quan Trọng Nhất (feat. Star Online)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53d20e23294c10247c7e0346a26d4b41e73a682922bf20e588648fef6f405a1. 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/DGA052005420.