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 0xf1be38ead7ad51c7b04c54f3d2476f131442e2cece41cea6935bc6053230ea94. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba6f90db-f58b-4469-b316-c915b79255ef.json and https://artists.proofprofile.net/proofs/artist/ba6f90db-f58b-4469-b316-c915b79255ef.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hy Vọng Quá Hóa Đau Lòng (DUCK Remix) [Version 2]
Hy Vọng Quá Hoá Đau Lòng (HM Remix) [Version 2]
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 0xb061aea9d25bebef9cafd80ce1567aa925be2fdcbd02773b72c97f3c5958ed89. 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/QZGLM2564127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefccdce357c31e53809cfaa0723a0e6997fed0d7b3ffe96d43ce9643ab74c0f. 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/QZGLM2568490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae66599dc20b53eafa808d2da27db813cdba2fa6bf4abdb52d87c935b87ba40b. 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/QZGLM2564133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1142b3acd664b3083f5bfa37afe73a2883cd2dd3b8cc8b12c81570a6aa9f55c. 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/US38Y2508312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38a66d2a713184dc6f1592b82d98b3f254d549ca719bc2025730ec6df9d76e7. 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/GXESV2494475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f46d0ab3bf796eb13f304318cbbb47e34e9f0677b84e65945e0b9d0f593691. 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/VNA1M2401888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ab2280b0e587f0060c4dfa5ec6c200125c71ef1712a2024b3fba073686a944. 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/VNA1M2401887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc018e5496acefd85db715f54871a21e8375ff605d2d33916de65999da99e912. 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/VNA1M2401886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c6e8f8dae6af9db4497a158e2d087dea4dd01cf604c1afb53f68188798fedd. 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/VNA1M2401885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4643256ae0d9ceb20035644806aba3757c566d9d5fe266a9f997c9fefb3ccac4. 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/VNA1M2401732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f2a2619e940f46dbdd482bfd546cccff53f3d446d80cf129203fa4a59fe915. 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/QZYHM2372476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2fba2e43ef374ffb21e47ccd93348845b85f8fb4d01ca87a058b6a3f350a15. 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/VNA1M2291513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49474fc263823afd7f2a396d2c02f569e749ec59d03ca351dc6994b18ad6586e. 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/QZYHM2372539.