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 0xc0baf0a0d8d326c0844db354171e7abe132ce2296c8815a7b97623acc6127d03. 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/25f86f25-d500-431b-b96a-3456f21f5695.json and https://artists.proofprofile.net/proofs/artist/25f86f25-d500-431b-b96a-3456f21f5695.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
鋼琴童謠 睡眠兒歌搖籃曲 寶寶胎音入眠
寶寶睡眠音樂 卡林巴拇指琴 放鬆助眠雨夜
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 0x2087127953e99ff6757f5568ca43d027db75f6668eee5274e9c9df168b5a0f89. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TWAA72300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6550a147162f859907e5190d68b6fc531a3414d6f699d17f8a44c6f686e6ca. 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/TWAA72300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73688e9b168aa72e21cfdc9f30516f17326bf00d0e76604f45edc97aff760fc9. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TWAA72300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4039c92d8fecced78b4308da385112791b2db5d407e36812ee49708b5668a3. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:55:21Z), 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/TWAA72300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8a6cb9c3ca078b28c0cc2c455dcba4b71622b8757ef81a2bb99f744b9bb13c. 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/TWAA72300017.
寶寶睡眠音樂 睡眠拇指琴 兒歌助眠音樂盒
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb532d9316e51da167095bebbb3b17e81bb8ddb7c7b9f29e315775e68666615. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TWAA72200889.
艾爾加: 愛的禮讚，作品12 (卡林巴拇指琴版)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eba3d63609dcbf193f72e4231784fe910dcdb4d26778e6cfec98f309fc275a2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TWAA72200893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0674d32aa9a10654abf671d783c01c1faec73bc6c9ae096fa8e5407664a64dc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TWAA72200896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ceca94fed55c0c0be475a7a926c9b9497b6767013cff5136e14375ebc9c2d7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TWAA72200897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f5561c2c9927369585be30072cc51e7c4588404679a2d641238fc8f9b110aa. 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/TWAA72200898.
芭達潔芙絲卡: 少女的祈禱 (卡林巴拇指琴版)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635a25b0cd32768756c8f9a0b4073081a5767ce3fa54b3d2ac853ee35ed8f50a. 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/TWAA72200902.
宮崎駿音樂盒 寶寶助眠胎教 水晶鋼琴古典童謠
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0eb8444f5e5c5640115076dd9715e33cfb0fd476170e3999acb00b9cfbe5ea2. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:41:18Z), 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/TWAA72200746.