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 0x0f93d39434b03fd84218aa2debf7666e054094bd20d8cd1eb12d7522bf9cccac. 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/e0b1845e-e6ca-4946-93ed-49ec66052d92.json and https://artists.proofprofile.net/proofs/artist/e0b1845e-e6ca-4946-93ed-49ec66052d92.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 0x2ea687580b01397b16f2d8a4a9e1b9dd161567ea39791e7477e30a4b7f906a49. 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/HKUM71500883.
玫瑰玫瑰我愛你(電影"天涯歌女"插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85d9b7f0ab69df90426c4222a8843463ab98a2fd298b7f4b2a3db4dacb67e99. 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/HKB120503038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0435da97f4247f88c3c9a676024f120cabe65a6864781efc846f4b7fc5c42cc. 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/HKUM71400502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d9554d858974c803e16985b24c462aa54cf1d2f214402b8bfd081d7e2ff476. 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/HKB127103018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464857e9026fe83ad94634dd5663b559037b12dfbf51b5307e9d6140de196687. 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/HKUM71400490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e51b5d13be9970a71e2868f5a365779c56a15b133087ab1dd4e586db6cd6e3a. 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/HKUM71400491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474aedb5fd6bb543d94c7c8b6af8b159a13c1299531bf0958413d2c90e319200. 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/HKUM71400492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51a66cdb17349d2526846e25c697d15a0d0dbbcc182071cdfac3bde20b53468. 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/HKUM71400496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12963cf2c1bc16c0303befc87d9c038eaf64b36503ba0565f6dcf7b980f4bb33. 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/HKUM71400524.
金曲當年情 : 世紀國語經典精選第一集
金曲當年情 : 世紀國語經典精選第二集
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29719efc105379d95b553b284a0239a72d934c06107da11dcdd968860332c15. 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/HKC631506386.
金曲當年情 : 世紀國語經典精選第三集
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361698ecf9a8c6795dd5d6e0ce3dd0a26a57b53be1d2ea8e5db1c241278b6efd. 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/TWAN70660321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea30e5edf14b3aa05ea5983bd5b70b3da94dc2df9d20309eef9286a4962503a. 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/TWAN70660324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e86e1921e6c0579028bd5af7ec09b71f0764c25365fbf7007a2ea3e8709959. 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/TWAN70660327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7cc2cf9033043d3bac19899354a62f04c57a18045654ee338749b25a965ab6. 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/TWAN70660328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe676bb7e58af8418fce27281dfb6b311efc7a02c0205769f56e51500c5abbd04. 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/TWAN70660314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b7e928ac8124d6a7ffb62b16209f6a15b468b368ba0f7ec3ecf743da57628b. 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/TWAN70660315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99163aba94b70f84458bf2f759dce821f46931217bc8de055e8cc35d64d7756. 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/TWAN70660316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09418b60109fe95305b2644dbb8cd50178876382d6ad626503bf61cfb102592e. 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/TWAN70660317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243686ee54d0f7ca341804642d759a740572277db7cb384565e0e5054b0a9419. 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/TWAN70660318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab70b604f9edd8b3fcfcfdf25ec86805dc9d064c62ae5559207936b13a41711. 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/TWAN70660319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7eee3b6d0b5293a319ee9b1aa41dd2f3cfbf4dc50040deda1e7ebb4b3ae17a. 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/TWAN70660297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe633ff99cbaa0b38288f3f1e9f5ecb9d52785b9c621cfb18ca2e79a1b36da2. 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/TWAN70660298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a54fab8069236a6f56dda2dba2bc199b375e2f4433878c815157c2bc057261f. 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/TWAN70660300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f94d81f287fcf1c19e93e8dc9e8d70903f6d9f9d40bba7f8349a22ef3e7750a. 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/TWAN70660301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdc071fed687722452dfe6acc14560ce2f5395dbc54884632d1b7088aac0483. 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/TWAN70660303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea939c04a2c99ab52bfeef61c397836b8a6365fa5a6d6a665e8f178e647c37be. 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/TWA310510701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377a0746823a3544e62057defed255d67f9fe291c404ecabf56da07a29094113. 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/TWA310510703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95eccccd54ced32beff7bd45db4427678947171140bb32fe1f86eda5dc1ce289. 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/TWAN70660305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bc9bee8bfe24ab9323e7ad21d9f049492007b188247892de2c0a4753ba593d. 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/TWAN70660306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2420cab734746677425ac305cba30d7de5072e836251da2d735d65631442ece8. 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/TWAN70660307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6255b89af6eab543f10c22b336dd59148992d1722836a9d7f5d7fc93e4939817. 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/TWAN70660308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa09b97a24176aa23339c6be4095944ded3d906f9afc31741cf9003889d7950. 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/TWAN70660310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389bfc4053ac278cffeca7ac9457459d2c17c2768e8fb7be6f6c29944b9dfc5c. 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/TWAN70660311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd792dd14129e863226a498aff9bad47bc6b2d3791ccf92935f8e60d75186eb8f. 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/TWCC37000862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866b9eb84db5027bc3561636aa299b169373307e8aedcfaa2d42a43bdd36a07f. 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/TWCC37000866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895bf2f5a6357bfd3212f89b2046a9e0ee8ee3567946ad3c4c034951128aa79a. 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/TWCC37000870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd462fab41d8f5023d7265cd3c01c8a7e746b3560bda735a43c44fc16a2acd28a. 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/HKUM71400431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b101ac72351827813059b8346fa7166aa34dc3d9275cebca2f4764d9540efd. 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/HKUM71400432.
金曲當年情 : 世紀國語經典精選第四集
金曲當年情 : 世紀國語經典精選第五集
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953f305d2ee429dc23965f657e15144ce690068ef1a090914777e5f9061ae1b0. 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/HKB128009038.