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 0xcf968d3a7382fb9b1317322e04a8d0be60d5157e333bc2906e624b3225e47d49. 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/6b8ea3bc-1bf1-4717-a010-2aa2d9f71229.json and https://artists.proofprofile.net/proofs/artist/6b8ea3bc-1bf1-4717-a010-2aa2d9f71229.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 0x6e618ff69eadd9a18fdfac1f6e67c12e9128af0ca07ad2c16fdaa48634657923. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TWU712300887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e618ff69eadd9a18fdfac1f6e67c12e9128af0ca07ad2c16fdaa48634657923. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TWU712300887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfae1209030c056c0ce9f15b7c0d08fdb28bfba424e4a2e6bfc95866ff9e5ccd. 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/TWU712301327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13f6773ae9be6847e363bee3598924254675473c797d399469c02205abeb6d6. 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/TWU712405058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b403bb68ac86375f6c57205c94852e83b74eab4975baeff40892b70eada1efb. 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/TWU712405832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13f6773ae9be6847e363bee3598924254675473c797d399469c02205abeb6d6. 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/TWU712405058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa106829bc11ffb0276c21524b7a37ebdcd4037e05795b7bae912e05c5cd4c3a1. 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/TWU712405833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabc5a9ac9b85c016992d1d66d50546ffbf016e3de20fdcd34012b0e145b01fd. 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/TWU712405834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6cbf2deb03de2f6cdbbd08de96ef7b756a2bac55252804380c283ac19c6977. 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/TWU712405835.
為什麼我無法成為我想成為的人 (ft. 洪佩瑜, 潘柏霖, Robot Swing)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12590a155baff4aa515d0bf7545cac417f0eb38583188646b52eed53555c63c1. 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/TWU712405836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8af661f268db1054f196840db497782e6a5ee6e922f83d5af49e0a6f0f1669f. 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/TWU712405837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8206d86e6661ccccdf847c241754bdf743daf57697ab14529fd3d8837531381c. 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/TWU712405838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783f793ecb6c6f060ebd72c0d923e3e2d169289b09fc16e40eebc4982d991a4f. 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/TWU712405839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d803fbb57348c3a7327e56735a9ed404328b55a5478336af588120962cc1d0. 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/TWCC32319794.