Guang may refer to: Guang (vessel), an ancient Chinese drinking vessel Guang people, ethnic group of northern Ghana Guang languages, languages spoken by the Guang people Guangzhou, city in Guangdo
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 0xc7e06b7b7a62e1da1a871c7991f35e8a66e3233fb0f3b8b2c283e7467c36b94a. 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/ac47110a-a452-4ffd-ae9d-43a733454a94.json and https://artists.proofprofile.net/proofs/artist/ac47110a-a452-4ffd-ae9d-43a733454a94.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 0x751ccf540d37bbe04f1d83994e76c8280f6f90ae10752292db5ecbd848ca2ded. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZYHM2374638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62d99dbdd61e297f82004545b704e479e0ecc5389b689e204fa06c105840d8f. 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/QZYHM2367422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04822d93858d521550981aa6d2ab0c2d50a137c0a50c1c1086d762639c325eaf. 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/QZYHM2372001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3b0b4d57a13fb6cb2b8b0de35dfddf85ec40441a2a0a3117388afef1775e71. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QZYHM2371693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68faffae5acaff5f17995ead518d13fdcef2e5d02f11b95f7bdd50e58fd29764. 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/QZYHM2370500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f520aa99ca36b78b2b1484b7daa5c6ff135f10826d0b2f962b07481e4ca356. 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/QZYHM2373834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743993ba1afde8f64f881a359a8e7c0da7d553777a597c5e48f6eb3301f217c3. 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/QZYHM2371134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2f7b403ae522d0109f02b2957ac69017110de62cbdc8e61405e953925fb74d. 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/QZYHM2369433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08fc7d232cd4887a8c532c96446146df3d164a3e23e84ee72070ed6c974dd5b. 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/VNA2F2401459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06197fddd919f4dc69a42d8439769c355f7b48893049a5a27bd24bab2a31a58f. 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/QZYHM2412709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070f912186adb628b8750d94afec70a4702467f1ce622328b7278284183ac728. 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/QZYHM2418368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13012455980c4a1302aaf2390bbc8fddce134bb838c58fd7edf459ddfd777a4c. 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/QZYHM2417475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05a6349ea75f5868c7a9054f3549f31c94992318b69d1b1a6e15e0bdeaa6e63. 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/QZYHM2418381.
Không Muốn Yêu Lại Càng Say Đắm (House Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e7e916cbc3cb21e3b948c6bd8687201c64a882c1ee738179039a8c167b3634. 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/QZYHM2419052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e655182cd10262ee1cf3f44eacc836f1e0d57a95ef5639bee31c5f4a7b1381d. 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/QZYHM2419768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa191bec25a694286335002972a7027d6c0f77ee429624e948a5124565535f9ad. 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/QZYHM2401991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb69f3cce60ee80a570d52f1579831a15e9fb3915375b0ef1dbbe9146dee0f0. 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/VNA2F2401460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf32e4cfff946ec6beb539b0532d33c242679e2835266f8168b45ff9fb900dcb. 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/QZWBE2388153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba03ebbedef0663e34d1f59dd99f9c7dcbb901f784e0c7c52e581d7679b8d528. 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/QZWBE2334561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7618efc790ab3df1ccfe925ed16410a443f182fc2d5ff18c2a1b5765787b36. 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/QZWBE2362451.