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 0x1cc4b72cec528a3a74fa3b9207e2cfa4fe25596c5498a8882a824e5954c7fa7b. 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/2a0c38bb-6d2e-4b29-aa2c-1ae03cd747f8.json and https://artists.proofprofile.net/proofs/artist/2a0c38bb-6d2e-4b29-aa2c-1ae03cd747f8.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 0xad71c7f65eac48c286e46443e0808b6564d488082f531b76feb4518ad2432e10. 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/TWBS51601001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fa80f1fb763a24f91c83fd545db915698846025a21a62bab30c9ea4b424534. 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/TWBS51601002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9377fd30516e09669b9498c017a7cb43948cc135d96f02285786837cd1e3f27a. 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/TWBS51601003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1a8428e67aa4ef3129a6cdb96e121fe6fb37415b253eae2d45a57722632bbb. 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/TWBS51601004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc38a74b85279dc0dd97ced693b2624e1c93e5fb28690c6776ef5bf271f0635a. 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/TWBS51601005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a78e5cb63f95b408b3233dd9dc49ddc7f2802b375fdb015a6dbbf65b9a2ced. 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/TWBS51601006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fd0be0ef111103b226dd9d8bd38babeea3922fba99513ea9658074fe82933e. 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/TWBS51601007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e4c8e2b8a719d091e2ea2bc5296c607b7e3a6176d12de72039f799abb646c5. 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/TWBS51601008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac84dbc1924055dcb23818e4a6d95f057fa1ce996d00a3adadb57c3f5cb7745. 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/TWBS51601009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa4cdc6d756c4fb91c456d768a82559a97d124e9269b8bcc9ddaef72d702e3d. 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/TWBS51601010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe43a3563e84a83945df29e4ff704bb59dbf6061fe0ce31f0effe54ff60366b0. 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/TWBS51601011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02df83a22b74e62ef3d37cb05656ee10a0ea82b3636ebf9c1982f0dd63b5879. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TWI452100049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259a312e8857b3a7c2f57604401cf2e34f7631edcb7c40015372ea60dc8bd43e. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TWI452100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5619fc3a58c43fa3a31f53930c11e24579b87127df89cbb4eaa369d14f7b860. 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/TWI452100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86742ef665aa9dcba676d20637967b77dda5aca5bf920e527f0cd0ecce62e56. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TWI452100055.
The Music Guide of 2023 GMA Showcase artists
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee1bae44466c7838be751bdc034fb6fc495edffc2da3f664f9e98275afdd053. 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/FR2X42268162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4631b65386349236f99eb3943819f906687df4665821d71ac669013094aa6b. 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/TWCC32212658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74daec8c92e6c3da39fe353e42d614692de2d12accbd288d79abb7569a4618b6. 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/TWI451900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e00fe3ec37d8dcc2ec883257d0932b52bd3e75255321e12f9cdb876f05f55e. 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/TWJR12200012.
Hide & Seek - Cook the Vibe Version (with 李權哲)
顏社煮場秀: 夜貓組 Live at VG The Seafood Bar Taipei
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d75b3609612dad52c45e40c9e36514c5aeefd7bfcad06810297aca3e55be19. 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/TWI452100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f637e35327609d85c734f96f5fe8d5371da537ae991434150591881c2bb258. 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/TWI452100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63cf75e91da04afc7335415d81aa866b77e9d3637e4f7974497cfa9ae2c48130. 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/TWU712500687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e353e0886bb89466361618a165fd633a0ce26d8b1be835cd2e1b8b34e6a956. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/TWA451707311.