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 0xf7c7a94ea46fa493bccd84752a4e7a2001a0f18e7a321a3090a8b95fb0efcf0a. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6fb0bb51-c26e-44b2-8c44-67b6e448b3fe.json and https://artists.proofprofile.net/proofs/artist/6fb0bb51-c26e-44b2-8c44-67b6e448b3fe.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03265eacc867bf066f36878c2670dbe976b0ad8c23e0d67f8fa57029a3f7efea. 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/TWX250701015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8f66192de2dd105cb7260f12e6574e97eea0516c1e160891aa0bc0a13597e4. 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/TWX250701016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3319c138f6fd766162e59446db5be6a2a57bc26ef37fce17e8e572b443d140e. 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/TWX250701022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf155a5dcdfeb5d51f77029bd6fc6c21d60f5122d58f95002875ef069bfa74f20. 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/TWX250701042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad71ef827f8bb30d382fc4ecf7f7f9f589ad219471ba5b3260ee2f737382fc1c. 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/TWX250701045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbed2e7204fa2b6ff960329710819456de80f02ca37765c0d77a80d8e9b3d4c4. 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/TWX250302018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997f23ea1ee6ba02d9e70a0dc00b53abcc7a3c8087a9110a6df229efd57e62b7. 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/TWX250302022.
仙劍奇俠傳《仙劍奇俠傳三外傳 問情篇》
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0db6353e35b77086449c93151554946e43ee0596f626461cdefcdb29843ae41. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TWX250402005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e6c79dfe570c0bf505753a6761cbc0602f5a910a3c0971249c71ad3257ccf3. 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/TWX250402014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffc5652a961d081a5696604d1184c28d2ad7b6eacfb4ad382ff91fa42fbca0b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TWX250701006.
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 0x5c6dac19b221d27206dc459e3fbe6ca5df3f2671f2e4336850d02ddaec5ee869. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/TWX250701013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28524958b1eea375360d793f400a88f1dfd9c03868e9090a3dcd0db7f0f894cf. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/TWX250701017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658ababba37a417608deed15dd4772881ef402c032c45124a459e2524aaf1364. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TWX250701020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec80635e0bec93caafcb654b92d35b3af7d5f3a19f96442aa9123a4184e5ab0. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TWX250701040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52ab3701f3fbaa0cd439af499d58b30d901d81dcbf4d5e28e64a97d704c1699. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/TWX250701043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e78b8f2672b1187501c416dc78c6f1f0cc1291581eced7080ccdcf25e9bcc44. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TWX250302019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec676a7b56340c0d1f071b739ac20313282469bec0140b23403b3b61dd6ce44. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/TWX250302020.