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 0x941ae712388b5ca316d6a69fadef5c742497654d2896fed1c6c2117dfa9d9aba. 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/1531e0e4-3f8e-4e1f-9f2c-1b171f9f3b88.json and https://artists.proofprofile.net/proofs/artist/1531e0e4-3f8e-4e1f-9f2c-1b171f9f3b88.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 0x5760b5f4de754709c91286163faba7e2e9971ea4c8a31a7212131938b6ef5c3b. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/HKD012210236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2237a512ad7fc41ed4c61c3ab83af6a9e3adfd97c105dfe8de214fe035cc652b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HKG732017750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fced2bda1ba40ddaf430e9c1c4a19e1c5690ff786f1f3a67243a0ce89df8da4. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/HKG732430981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7ebd7433a34c57257f293a34ebd8b9dc08a639b53b2651ccd8c6dd96bf0bca. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/HKG732029091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c558a00d36eddcff1d77c03ae2854ca9d0c7c482d2520d47b9f756e7619b63. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/HKD012209268.
失重催眠曲（阿爾法腦波音樂） - 完整版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58d334475174e04f257dd432b03848d32c64d1b97de84f10e72422f8c536bd2. 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/HKD012209081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe67db41af2a64889911bfc6b5beedda3a8f97123b797e73f514333236c2b43. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/HKD012209078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49028ffbe8fc6f05af6b0e3b92dc9afb5078ceb8de3263f8ea2d82ee520c761b. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/HKD012209083.
催眠曲5分鍾入睡（嬰兒安撫音樂） - 完整版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4abad0f8de4dc60748302ef2ba3b7e3c6d1a5952a1eccebee2bb66eed1b48e3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HKD012209080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417bed490f76f5364b11a9e92e5efb9a0d2c7a0b608f61adafcc74f8adb7c544. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZHN62263333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf815429973e9b729d525e4edbeac9141df96f1f92942229c4fc1573926791a. 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/QZHN42392354.
助眠音乐3分钟入睡 阿尔法波催眠曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81d6388fc44026b84c59ed5e7908c832cd1b8d91470a67e3ac5b017e8f9fd90. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZTAZ2295763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398075cb3761964b7aaea4c2cfd07bf123a10556d65381686b598b96a4c642f7. 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/QZHN42217063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0615acceffadb5449a9130c38dc9e440b6bcb661644bfde18692ae3ad4b20952. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/QZTAU2314140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe37e8dadadeeb652814d6551c66c950c0b5a8adc2179db1b3d816400566635f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/HKG731633638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f224846b8765a7e783e4fc65eab51aa3a8fafae773b9109edcbc003a759df64. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QZTB32378217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ccb2f1bfe383fc28fa01603f770a1fbe6dbe746f12a7c3728c037d033ff6a3. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZTB42305136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1846dec18627a79e0ad851b9139b1d2a2eb4dc784fad2013b7fc3f522fccf7. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZFZ72403567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f2d2beb3ce710a271eaacb2ef4f38fc8b578305a1aa9c7785b47266f1c6210. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/HKD012318013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8780fbcdf978ac50c1b21582d1c9fa2c4d8286400c5181d63f17ca232235ff2f. 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/HKD012318012.
婴儿哄睡神曲嘘嘘声白噪音+羊水声 宝宝催眠曲5分钟入睡
宝宝催眠曲·真人嘘声+子宫羊水声+胎心声
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08f290ef39e00cd07c0c03605c1faa48d7371b9f34296eb5fbeee4b5b6e641a. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/HKG732513471.
睡眠音乐 催眠曲5分钟入睡 阿尔法脑波音乐 助眠音乐3分钟入睡 重度失眠白噪音
睡眠音乐 催眠曲5分钟入睡（阿尔法脑波音乐）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24c8720be30f9eeae4eb96f5696f29c4a3490a27824b594efd7d471de7a006f. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/HKD012520940.