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 0xebdc7960c687764d3a420f27e26e25e3054dc5189541578dcc99c9782a0e35f2. 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/7c0ea54a-50fa-4562-a5ec-520c7705b1e4.json and https://artists.proofprofile.net/proofs/artist/7c0ea54a-50fa-4562-a5ec-520c7705b1e4.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 0xbf80630dbb18b58337a31ac5653051843c836f5cdd73be99aa06aec2c8304ee3. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:32:15Z), 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/QZK6N2134932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6734a8e458ea60185cd8853c673039b4c91ddacf66168b6cf8fb7ccb8d8081. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:36:43Z), 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/QZK6G2103504.
Anh không lười chỉ là không còn viết được
Anh cố níu lấy nhưng sao em không ở lại ?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f638945fb1d70e4ee12362368ec2551cbb72a2cc217611d509ccd1a37cbfc3. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZHN82256856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22839907c261dad364455377054af3e4b300cbb51acb7ba6af6d895570eb7598. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZTBC2322171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffe54f31b93f0b2d92445cb7b6ff8623841319d9522a43c3b95f0c2b1e78e7b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZWFE2325706.
bao nhiêu mùa cây thay lá, bấy nhiêu mùa thương em
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6026f5d8cb79f52e8fda387e235b9fbd8c5edd56dfbda84544260bc8118ff9a. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:29:23Z), 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/QZES92488775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1589f6aca8c1851150904da07510b5356eb7dc69a870c90f65196236ed610e82. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:21:09Z), 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/VNA0M1940744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b689dc4d71c242299139de6ca363eeb4c8d4e7de041050bf6ff4f3b17e90a7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZWFV2567167.