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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b51dbd9f8df61c6989ab754ed9c96958a956a6b264a435098de0a67e64c6ea6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/219f7a13-e18f-43f2-af2a-784273b0128d.json and https://artists.proofprofile.net/proofs/artist/219f7a13-e18f-43f2-af2a-784273b0128d.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd69b7b98a9ae9b77ada932348009495399b8dc22559717a6fafbd805c496d6. 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/HKG732380693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4b586a867630d686933e04e0952fc1cba3cec7a7326bb446ac80fbd3680e48. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG732380694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7158a9ec4072a287216956c32bf96387cc91e72fe21cc9e15ea940137151480. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/HKG731679432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b9e0c97e929834a22264132ddabcc802b2ba2c423b50fc222a71ff4bdb0293. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HKG732124324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e6ad47cff0df0895428f390e06244047e07ab7cfafac36d7d2dd33e9491cc0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HKG731679433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbff1aa1eac57801c8f145f6d560aab3b009aaab8aeab433b3e82e592f12808. 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/HKG732124328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b6bac3a1d409c7672385873abd903dfb2373eb37368e5cb81b61ec81fb0a47. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG731679435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6948e137d1baadc57ca56d3b89ff3d00765b33dfbd127682fba4d826886a1bd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKG731679319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86db7d32c8955bbeb0667ff18d694cb31673b838f609a59fad008d97d32f7fa9. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/HKG731679315.
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 0x08da388844b72919b4f020a49cf8c537d7ad663d22fddf1780892d3f543e3c45. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKG731670834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fa1a6adbe70752fbca6768aa1042cf7592ffc3de99f6706d4a111391ed25ba. 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/HKG731678512.
像我一樣的人（《百變馬丁怪獸大作戰》電影插曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40354cf8e9bdbfdcdb5dcb22267474fd81197526d16f9a348e104924e357e756. 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/TWDL72307041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e27dff949330b28c9edb8201400d6ff70ca0a2bbfd5f70186341fff8a7f7630. 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/HKG732292141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc014d7f5c4972e910a33a649c264cd34a9d9b57d26042f835165ac5659215b. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/HKG732313800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0a6b34afc54c35a41dc648a4dfb33dbdc7b41087dee57961872fcfacfc8d75. 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/HKG732270284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918f2fa2f85c98bffa337039ac32abe5e0b8ae0bc3cdd657effb8ace95dd0c8d. 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/HKG732269053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08fffda98b099247d1db984f5bf79ccfa14cab7c88877997ab74c7ea0fe8f3d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TWDL72201880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe346ca64711990709b6952df839e5039d3de4a2d13d0f44915586e9cf208abaa. 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/HKG732422188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa483df6ba20af0122c05876c55fd3e01698eb3edd7a59fc0c427d5b25293c522. 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/HKG732124364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188b630fa028ae6e7c9c47c2e284d87ad275e11b278c61e101919eb2e2e61040. 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/HKG732124365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f988aecc88eac9b66ae31baf4c8c17f4285866264de0d0713cae8f495bc8fd. 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/HKG732124366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560aad96f313c21c7435cea2aede5a46eaa889b465c3be11012d3e6d025b8a3a. 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/HKG732124368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e86d3470d0e49013bd291488cca4b4d622fbb754b0d27b20dfd15f8f229613a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/HKG732124369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d043979d1278b6b593a141848c35a7a554db288e3f8afd95ab89738a4b98ec1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKG731679261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3887f8ca1fcaa86c43282ff10999b560657fd3babd601f9f5922280fc5475f. 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/HKG731679262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871a1108ff2a8d137087892df586e1afafd050fdfb343fb3ad0a28b4058246a7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG731679404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501100bdf97a540ff4ccf2043050e45215ca1910960cf7bde12129b114e15ac1. 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/HKG731679402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0f623890e0b47ac07d5fb31ef60a9e5988f007945102684f7e867d427a9b09. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKG731679408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51112c5663fe8c0a531743da37b10d6b7003be262f3a5681221a200947b08952. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HKG732124340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c69504a964b73e8604afc792789b4a4fa52dd4f6bec7ab56c7f3abcf74cd51. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG732124342.
归来 (电影《那个不为人知的故事》插曲)
归来 - 电影《那个不为人知的故事》插曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f001c0e17c4364cc233ee461fbf373c6ebecdf7234dfa75c83b1f96d5bfd31. 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/DGA0R2413069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e8bd10701a949c82ae226e250b18c06ab6ef381bf1f85fdd71f68895fd8345. 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/HKG732480451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe976f2b282b09b880b7566f9314211a29e3848303ec6cde74ea95b50eda6f849. 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/HKG732495087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74948c4de6f63509abbade2ec031cc42a3dac662e35351447c572988a97e063c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKG732467716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d6f1e847b7fa33a9f520c65fd029dbe207d3444035136b2a791824eac2e6d7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HKG732381637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf027b1eea114bab329eee8c56080cb9e8f9a1aebc9b3836debbd3df5dc2b5e23. 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/HKG732375554.