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 0xb645cf5cdc1e6622db610b5e45a290bac99734a3faf30cc13b2f4ae15c91af08. 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/cc88a8ea-f7eb-4c69-9177-b0cfc43407de.json and https://artists.proofprofile.net/proofs/artist/cc88a8ea-f7eb-4c69-9177-b0cfc43407de.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 0x6a1f73465de20c283eb16283be2f6637bc0df841ba39289bff1feffc6395144c. 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/DGA092472799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387a79add193af3c0ea6e51939081992a3df4d321875f587db604113885ab7d3. 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/HKC992524497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1541216c3d9788cd5982d541f9b0de4394b26d57ff0b1c0e3ad0c95fc3570826. 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/HKD012382349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d18b9cff0d29fa39b5c3396028c9ecb66fd87b0842f6cc9e3623e6c81470cb7. 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/FR10S2577127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae53e4ce4db03aba3e51b2d640269655f6f0e89b15f500bb302169283512dc6. 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/HKC992725088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3105569895e7df6bd3169682ea4d22c415577a0346e13a3aa6d7260603f9ff. 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/HKC992725510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751df79ae6c3e243a01c85ad967a07a2dd5f270d10d9132c1f59da22e0a5d272. 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/FR2X42525044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20778f0668efcf36df6bc561f8c0a688dc56ff4858bd66f8d26021a9791ae198. 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/FR10S2500532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16781fb476326a52d2673ea8340c51342cb358111e2dc5730d90113349ce2bda. 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/HKC992725141.
思念如风已入冬 (陪我过个冬 格雷西西西版)
思念如风已入冬 - 陪我过个冬 格雷西西西版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7abb2daffac0514181ed0c2c9323a7e5d2c6f60ac71bfb47522f528493d8d3. 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/DGA0S2485547.
思念如风已入冬 - 陪我过个冬 DJ 九零版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e6910e2e10cd0ea36856fe8ced2eafe655cbb6f9693d0d7a5fc15652ef5119. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DGA0S2485549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd814be7e88e0ead0e13d901f15834923ee96e8b5cf6659a6bc71300eb25d7382. 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/HKC992724141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb742d83aeca2650a548c22032087ddd31a0d74b94d3ba2f515bbdc0ad521b2db. 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/FRX282348021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a569a5fc58d9f483ea0e0a81d4221a29c4d59a2d51aa39508cf80cb5eb6bdc5. 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/FR96X2384311.