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 0x4ff378bee39173ba9ea9c2ea388e02daeacc4387a6b513961192c36eda1e1c2f. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15a85759-16a9-4b90-97fa-9e20c203ab27.json and https://artists.proofprofile.net/proofs/artist/15a85759-16a9-4b90-97fa-9e20c203ab27.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
我爱你最真你伤我最深 (国粤双语版)
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 0x2152abe74d90a77929cf2fc0939b658c187af2b6a3bcc2a782a5d3153f9fc24b. 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/HKG732278035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11b9f02dc158edcbfc479d410af8de4e6faa29471a32985d3a709912faf4719. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/HKG732278042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ff3b760bd32cf64479591d58967935f4cc8062bd1aa71ef5a5d57eb43fa108. 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/HKG732258173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ef23ceee1a93f79eb11b92d9c81aece9e095b7cd967b498e47c3c746db6d96. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/HKG732258339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71846ed18f11703c9bf1fa1b84731f0dc121230c699e63fb296cc896578171fc. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/HKG732258319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fb8021f32ea5f80fd9662b0b093dfc8e808d65a2a412210ee31ab9cdec3ead. 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/HKG732258291.
暗里着迷+言不由衷 (深情国粤对唱版)
暗里着迷+言不由衷 - 深情国粤对唱版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907957efa349cac04cafd6fcc50a2af4cd05e249a6a0f16dd57b83480ee190d5. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/HKG732259149.
暗里着迷 言不由衷 (深情国粤对唱版)
暗里着迷 言不由衷 - 深情国粤双语版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e25d7b259a07de6005c8b334a75f759cbbf5c4f3990cff481e36013912413cf. 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/HKG732258297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0c1d8eee6d35bf77f23b18a78a286a37696f496de0b2900de1cff061c7ccea. 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/HKG732258429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e96a9c6fd13801d55a40ec149c9054c6bb55674d0d0bab164fd57976b9ef98. 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/HKG732258430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd98ca339b92bc324b65ff53f458ed953bd41b28e96267178b0fe3f61b17d993. 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/HKG732258238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85720a684df72e4ffe3e39be9420cd302cc2ddc1647b38db83896c5ee1e05e7. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/HKG732259151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d9c7b747f59a69c7b302328fd7298dc1e352ff794a4c892809faaac86f6d6d. 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/HKG732258399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402859c244f03c2c8566fd41bf61c13090b3ebf63cd195c5f82cc8f8fc8e65b6. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/HKG732258401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ce3b1444b45601aed4957e42746b0531fe991f0c3450c25a7fe57a085d1f00. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/HKG732258197.