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 0x61a1c8bee37ff664c2fc3c1c95b121c8f593e40f8ab8f37306c452e1378973d0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2f4197f-b750-4d55-8dc4-8750c0ad3a58.json and https://artists.proofprofile.net/proofs/artist/f2f4197f-b750-4d55-8dc4-8750c0ad3a58.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
鋼琴曲大全2019 - 輕音樂和鋼琴曲為了學習和集中注意力
起床聽鋼琴 - 早上適合聽的輕音樂和鋼琴曲
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 0xd96dc0daf735160764158cd1056610057e160b9aad1a2fea2a3789cff0b6509d. 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/ITO101930728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f95d11a4d0e7585786e7cfa35614425766dfd9e7322a1fee87440d3d60a4586. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ITO101930729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480221c8a1d9ef8d17aaadd08883705026c34339d97c65758e05efaadfdebb2a. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:00:14Z), 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/ITO101930733.
睡眠好音樂: 嬰兒搖籃曲入睡，寶寶睡眠
早上鋼琴音樂: 早上最適合聽的輕音樂, 咖啡廳鋼琴背景音樂
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed98c4b72a20066c46f19975ff3a47c02a2da17335e03357a76b0d7b3b35e43. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITO102070574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea62be01072cbbdd46e07ec7576e5ebb228c61ea278689b2ae32087ddc874a64. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:35:08Z), 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/ITO102070576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea97530390c99830e66bc5b31737202c7ff6a92fca3bf13824ff6092f8a9acfd. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:33:45Z), 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/ITO102070578.
放鬆的鋼琴音樂 – 為了在家放鬆的背景音樂，適合放鬆、休息、看書、學習、安靜睡眠的純音樂
溫柔的鋼琴曲: 放鬆鋼琴音樂，優雅餐廳的鋼琴背景音樂，酒店大廳、舒適咖啡廳的鋼琴背景音樂
春季鋼琴曲 - 14首非常柔和的鋼琴歌曲，適合早餐、閱讀、休息、學習的悅耳音樂
好聽的鋼琴曲: 輕音樂為了休息，看書，學習，勵志的歌曲