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 0xc9f70bd520f2c6c91036c09c65d3693ca7bbb816621a328c38ae9aa3125c28fd. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0168c4e-6fbc-453e-a14a-86172dcab31b.json and https://artists.proofprofile.net/proofs/artist/f0168c4e-6fbc-453e-a14a-86172dcab31b.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 0x799b77976f1fa447d0f3f3dac0966011b13a0eca4ff58eb4424505bcbaf74429. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/TWT952300061.
時間慢且行 (台視八點檔《生生世世》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb0d0047c7f069221bf06d91db3f7495f73c596d467453b00ebed87e0fdbfcc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TWT952300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea80e4524e6b86d2c7462b5e181628aaac2247f335fa1c9038f604e7b3d4511. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/TWT952400062.
滿滿攏是你身影的城市 (feat. 曹雅雯) [三立戲劇「戲說台灣」片頭曲]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1cbe60f7bf8d47613970e853654114c19de5330e74a5714cb4eb938c465e8a. 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/TWT952400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba0a3e47ec5a699042f7ab7911f1a1a71ef968e520f4289d51d34d5f6e9f0a6. 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/TWT952400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4a1d92b9423b36035883e5263ea15fa0fa5ed5b29fad87d4ee8d2521e9aeb1. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/TWT952400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d11e92926d3c0272ede94fd7837601d08b4a712c8d661bf32b8387bc4586ce. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/TWT952400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2345a9407b4217accef9f2a905ea7d7cc0e861057023aaacc903a079acdda5ff. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/TWT952400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b06546c5829abad1cdba6ab642834872e1f375f71f60466f9c846053b2a1f1d. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/TWT952400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29ad8a8f3b08fe21be97e06a7b6d6bf7c73cd0691a8931b05deb396de8678d5. 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/TWT952400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb4a6ce7903e6ff7cee2c34a44c2837c256f0f9c73e81df99078e10f78c3277. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TWT952500041.
莎喲娜拉心愛的再會啦 (台視八點檔《寶島西米樂》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ca645aba2d6eadc7b23153a11c575f71ee76b39a8f9b3c1f030583f1ea6aab. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TWT952500042.