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 0x02d62ecc15b1e6289d73ae6c7d8caff1a1d0077f3fbb30552b3e9c13a5018768. 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/e9cb1704-8edb-4ffe-8f22-2210f6039ae0.json and https://artists.proofprofile.net/proofs/artist/e9cb1704-8edb-4ffe-8f22-2210f6039ae0.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 0xfd86462a656f5a909f222aa7915b9f4b2bcf9e54bb05e9a7dd4d91b555ae1050. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/TWDL72400775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2805468f5c0c0586f785068edef5057fa80af306bb02da098a8db26bc0091834. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/TWDL72400793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e624b1f99348f4202ebc23dd25c4857703948d48ea59b7dc1bd013e59a17ddc. 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/TWDL72400797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024066f7d6c981bf177466392804fca625530a38a954fda92fa734aebae5bf84. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TWDL72400798.
一往深情 (網路劇《鬼吹燈之黃皮子墳》宣傳主題曲)
一往深情（《鬼吹灯之黄皮子坟》网络剧宣传主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f9e7df0d335360ec580d2a611bbc1fcbed0f09baea8c1b9ed5f1335ced088e. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QM6N21771017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cef78b6b1d8ba1857e6865389463b5262dafd7d41e41b0073346536e309df1. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/TWDL71701295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5af16d4feb6e05f0dc822fc2b96a70912a4f6ef100e53ca23c1c86941aa4112. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/TWDL71701299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c9b266c7dffc4def29db5393c36fae5939aa41d0fbfed44fdb970d073e486d. 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/TWDL71701303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ff15302e44f110526365fcf1b2698c0a60ae1ea22997080de473edd1612bf6. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TWDL71701304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12e441a50dec36e667d4ef37a5c46ff026752861461c83784c26a5944f9b810. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TWDL71701305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf219e959f67a4ba2d188fa881521d9a82e51619648c1de29c3a1cd75963a25bd. 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/TWDL71701306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9ed81fbb26160454ea289f08bf9b545b4f1d4381b561b59507a7b1cfe69bcc. 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/TWDL71702359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a7a481129d7309f1bae93f56eb9a18b572efc5cedf4af8198c79c74eefe0bd. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TWDL71702360.
我不知道2020（《了不起的儿科医生》电视剧主题曲）
我不知道2020 (《了不起的兒科醫生》電視劇主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12831308811da6f4e3252c05510b491b3a64321e2b21e2b7295b43237d0d0fdd. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/DGA0M2331692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858bd7473a30af1505d4409d10386b2e2a63b5588365deb33ae552e7efaebfca. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DGA0M2331693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b6bc1ad1384921660913dee7f97d8edc3f063b17010fa923907f173b9ec938. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/DGA0M2331697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67ea2b2fd855b3d6637f79b8d606c9e42a0ee19aa390066e0a56579852a371e. 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/HKG732147189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf07ed5abd9bb8622f083dd600533a3e212e30d2bb711d5b6a3b7f1a5722f90. 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/HKG732280334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c7b3b7285a9c47c0227ca564a7aa706d7b14abd49c517b205a7913447215d3. 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/HKG732280341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9022ae635a9777627a2d003222f6ac2bf012cbb6a3b943e2cb17e0b96964d25c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKG732359319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b7c37b16f4e51afb935f01309dc011be99e44e94e4f0eceefffe116807d9ae. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA0M2324078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ada7078080ae2104af9e6e001c0660a99ca93968ce77be6d0f7ed43ccf82cc. 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/DGA0M2301046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd340a62913b82edea69495bbcff66274bd8f9cce916ce49fc1b72496a45e439d. 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/DGA0M2324047.