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 0x90e07f2d1f0d98099b7e8608b5cb4fa293fd10604bda9d82a1ec30667fa8d50d. 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/15d640a0-0852-475a-97aa-1362a36a9844.json and https://artists.proofprofile.net/proofs/artist/15d640a0-0852-475a-97aa-1362a36a9844.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 0x6e84b4818136316c0aed11a04d04373b591f8f72dc4b12c2778157cc903b25ca. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/TWD951984101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d9c17cde6260e0b70e97f860cfb6e4738547fa9a2687f1ee3a8e5d7c88fa28. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/TWD951784101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa126d9aba8f7efde810b443d5a5c7bc2a5a7434a20f1ef4338c986993bd57612. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/TWD951784102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca4a7608bb553b7a0d243f16040f9a09338688f1036da487b19b920b3dcb949. 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/TWD951784103.
愛正在發生(偶像劇《稍息立正我愛你》片頭曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c635cd18de9b46bfa13322e52e8c1564173aa70be2f648f6a11a3a6ab504b1. 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/TWD951779101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c635cd18de9b46bfa13322e52e8c1564173aa70be2f648f6a11a3a6ab504b1. 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/TWD951779101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd6c1d506cdd79b5c25718ddaeb1e40f8e1844d5ca3d0b9bccb7ceb4524ced7. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/TWD951779102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a7e91012c8c14554832b3ed3c9f1f616dea68315b33f47c3369f285495f502. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/TWD951779103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bb2fd2176e80ce16c3b5f9076b73e543e84c8bbae0205f3aaa294e91d51cac. 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/TWD951779104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c1b2404b4fa570e0bb335ff6673749526871fdad43fee103fa7445fc4f5e89. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/TWD951779105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb7196966175689b6a771aa0d74c519b6cde6f22ff6949bc56ef588494daf6e. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/TWD951779106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a6ab58fee5e4c7c0ce9d8810e2e19ab8da8de51e4856bc7d3e682591e259ed. 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/TWD951755103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6012aac364b02f4d2c37afb66c4f0b962f875628af9c6d4a4a789db9af602ff4. 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/TWD951343107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b761e122cbcbb088f992bb41f962bee92e9e7b3c94eed30a2e53fd9b5537dd. 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/TWD950522104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37023d7689e3b74688e3514bc3c54fe688fb58f4a62dce03574f447d474c8c60. 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/TWD951043107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87a55e0bfc7c20d8854f7527e5cbd3a58265c2e382ebe171ba0414a8d904042. 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/TWD950722104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32283120fe7460a7076c4645985825d606f3b3fe388caed89bdbc86c54594532. 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/TWD951673101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55da1d8867a62ffdadea31501a2aaacd51f01356c7fb2eea99004a6ab41701c2. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/TWD951673103.