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 0x5aff0b2ec4df5e8b020ca47c80cf148117948c81599cbd9da648c123effdece6. 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/72eea20c-59fb-4767-a8b7-23e9930ebe3c.json and https://artists.proofprofile.net/proofs/artist/72eea20c-59fb-4767-a8b7-23e9930ebe3c.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 0xf1d692062a9fd8f2e2f8e3424c6d2b940a242cd00116d176a9855874b34f0ac6. 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/TWC811104001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521bafd385b6a2c5ff2092821669e78a0b482a1d736cfdaaa9f08396ddb1ca01. 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/TWC811104002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bddfb703de5ebfcbe80708b701606f0a313757e491004eb17fd2218884d8832. 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/TWC811104003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d651e1ef4e34e7d93d83d9475d1a7be227b87e939ac4c406d730c5ad9f6a1d5. 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/TWC811104004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb223e4c279472fe968084cf561fc7b11cadb4a9aee659f077eb471cf568f704c. 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/TWC811104005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd5443ee792ff0ece085e744e1ee3393c920362acf83d5cb49c852738b1fdc3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TWC811104006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f78d0488eb7b10d09924435135de03597e6865bad324e181affe1739130b51. 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/TWC811104007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709294f04666d3c0eb0532a97a1f2ee71ff73b73de77225a61be6eed75a4529a. 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/TWC811104008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf330056671b419877d1eab011f0743c4cb0b47764ef34836538a8dbd4c1ef8d8. 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/TWC811104009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53b0608888174a132cb7a3ec384e1b4a2013e50fe47045b321a5735f7f96636. 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/TWC811104010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c5fadf1812a97a2113f8305ba1562bc80d5dcd7f3d787c1b2d2c1abd1c6b09. 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/TWC811104011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d1eceea76c02de1c19f932983fa6dfe66bc04c384efdff594d701f1b25b34c. 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/TWC811104012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c5a48165d6cbcd156c4e5ef7a15bcf1d774344861ccbc9399aab6dc6799daa. 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/TWC811403001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a579ecf9fa86711698ab70e3660be569f8896ae404bf186054795db9f97c78c. 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/TWC811403003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eebe671f5b893252e63726532da34c2c27f9d969d008054d0b207c8918d2254. 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/TWC811403005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7d78c4c9e6c1eeb243f49dcabf8b37f76e2a6c61542b9c4c144217ff9a8fdc. 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/TWC811403007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f25087f83ddf5dd342e976812cfbf8589b6d3c5326fcea8f98bb3eb4071fb7. 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/TWC811403008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8a92306dba9e31bdc9759b2647f833542a60751cdcb2b8f2731da7f74a2a30. 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/TWC811103001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16207d8c3f53dc5932e49d89747553e072d3d789b72e8fc56c963fe9eb220b7f. 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/TWC811103002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e53ef96d6379410a2eea67ebd607a970dc85dc505a021184832901ab7813c08. 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/TWC811103003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d45a0cf5ab410ed7fe646baa5eb281956ea01134a87821c26073167b771a48. 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/TWC811103004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6429a0ff2694ddf5a60c59412f20fd5ddd37b4e4eb9f8fc85fae8bdbae4c628. 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/TWC811103006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6baf7c2670d659b4917e361a74448736b7c6d278e6a8bf08860df1efb34004c7. 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/TWC811103010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84722779348230cc7ecee8a5cda2b190da27ac6e635114c7c2b1909c66bba93f. 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/TWC811103011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8b92b77d3b8e0f8146365ffce8b6891a0c3f1f6b2fcae12d831c572f833c2c. 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/TWC811103012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38832b2012cb9aacd9ba3d53ea2c810d84756fc5231fbe81ca8007c7590ce814. 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/TWC830308001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769c2198c3f3dc8b0641a58a1b58fd35f72d9ff302da0e14bb49c3482e6818bb. 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/TWC830308007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c768e85f24d05ff0e46a0718c8c0c73afa14321583c4b3ef7363dbb81b99468. 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/TWC811504001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19cc75719c749275e55988ce353bb1e234437aa46043f64fc00e29b0019a33e. 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/TWC811504006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e98ba410d0cb7d83c2c2f5b0fd722070c98eea3fe44d1539dc1eb8c2d188c52. 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/TWC810506008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9f7d53b88a52131c69187fe5a2d72426434683ce45d7669f1c4afa99456340. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:04:42Z), 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/TWC810505001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28e15796556a955c68ae366b2d86fd1aa85909a2c167076c1c9f3a715cbac7a. 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/TWC810505007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8259130713cae9475edb127071e872297012ccd7e430534f66d16231c1ef8703. 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/TWC810505011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5a13caac7bc5bc3c62783c852a086f661d865efea2be332cdb92ed83761dc1. 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/TWC830218006.
智冠超炫電玩配樂(19): 那些年我們一起追的遊戲 電玩配樂主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee348463879bd01bac7b2b965f8104c69436ccdaa79a3e2f8f33e11bb7d968a. 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/TWC810706009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75151993a00453a92c74654cea7a3d24a6d55d72ebfd5c2724b96dc0c252c7ae. 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/TWC831406008.