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 0x9f46459ee40ade52d29fc050ea2cfde5dd6e1456c22d21f4462ff1cab6e33c8a. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3aaad679-2991-40f3-a557-89fc57687076.json and https://artists.proofprofile.net/proofs/artist/3aaad679-2991-40f3-a557-89fc57687076.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8020ae6abe9a0eab5cbd0af2e0c1810fb24c834e491777c2d04585fc48d847. 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/CNZ842200318.
有你在身旁 (影視劇《燦爛的轉身》主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4badbbb134fcbd39ba732127840bea5876df75358daf42f550f5d3ef5790b3. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/CNZ842200314.
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 0x64e9fea54eb62dbfdce5d08eb834a28752fad856af8586dd62a63a7b92548c5f. 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/TWU711804773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc524580ba6cd537c1d13a278e5e2228bd28f3fba164e2f393b8e4418f8955338. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TWU711804774.
雪落下的聲音 (電視劇《延禧攻略》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bed2d8017d2f79e79fa8401e47e0e46c68342fc8b02bd06fafd1ad3ecb82169. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TWU711804775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fee6b356d82e1b9ce1ba834876352e2e058e0afe43d5866affbed0cf17850d9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TWU711804776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5c2d9f5e04cff7bac696f854a47cdd5cc8b063d5dced43b03a2a29c6e919b9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TWU711804777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3ffcead52c0832a98ccc51725419f30d39511ff6727744c0d168d615d425bb. 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/TWU711804779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b06a892f7eb08aeec0dfaa301eb70a7695e86c45482905817a664ea796a7003. 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/TWU711804783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34bf19e40af84fcad291e7c423666b73630eb05ddcb7b2f9c665317436635b5. 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/TWU711804784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f33d8534983d7fc0083a5b0e257e16931c0b482fb6a3e6fb59b22937e7890e5. 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/TWU711804786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d494fa6bfd1ba82366aca820b70236cc230d79b4ea2fc74d38dd69bbb62ca8e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TWU711804787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca1a5e9298185475016ddda905896449855e8cdbaf77637575612dfc4e542fc. 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/TWU711804789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410a977e216495be8117ddfce1c6c6ad69326114066b4e73184e77b2fd21a700. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/TWU711804790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d117b8083b18a5fb2eaf3c5c2e2f7ec52fcd960e81a7103853e27107111dbd5. 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/TWU711804792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae73d75562714eab50983a4ea9f4e50bb6cdca3af38ef80eccfa28626310c0f0. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TWU711804793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfdada03cb7256e4a3702951e21b3b6bff0ae17d6ff9a99291a1c8944a4d298. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TWU711804796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10d884ddff763b3f05df6a8d17040873458075dc1c58605bba978e7fa38d28b. 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/TWU711804803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f331a9f35da9e53b154c4b87ebccfc397d385f9d8cf7ac02ad24ce6f0912a5. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/TWU711804804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195d19c07608f37dd91cead9a1b077051049cac5d4e4ee1e25c08652165aa11f. 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/TWU711804805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e2afb4993740792cd2a2af388d8d90600da57bb7e86c004c4db6c9a674a900. 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/TWU711804807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda8641520f01cdae75c501303c52d0be3feab2253cb86cecf28036425f249ab. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/TWU711804810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4793accc7f3ce232281a889eb8e42080df427a9c6204e6ff593c372860d97f. 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/TWU711804812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0bcd9388dec11ceef1ab930e80a0de14b2149833875bf38562bfd0d00d8048. 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/TWU711804813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618715f886099fa7e72c4442cd0af95613064e72ed551846a49cae15cc1586f1. 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/TWU711804818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa7468f0eea1ba10c173d3b8d65828576eec4aab22242247d49680064a5c7db. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TWU711804821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c1bc53a304f3dab8d6efd03479bb7921bdf246f3e131a072766bf7b2d182b1. 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/TWU711804822.