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 0xbed64fa46b2160840b45a7a33688cb434ad868f161fc3a8ed387336e724f7b93. 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/a2643841-3d7f-4f3b-831e-5192696ce8c1.json and https://artists.proofprofile.net/proofs/artist/a2643841-3d7f-4f3b-831e-5192696ce8c1.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 0xe2baebe2d0a18ade6215ce345c7b511af2d88aaddfd223ab5ff463c15d777240. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:57:10Z), 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/KRDU00101301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b9dc612397e9f7a8c74bf81e3aa6083480b345069dbb089f2dee841778938d. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/KRA661000118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eef458229557a361931a6a84925a6133761b988f6905e980adce130377e36d9. 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/KRA661400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3adff57e0c0e54f07c3b43cead10765591e1cf09ea1b217e8e362fc9844b59. 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/KRA661400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05ee6e96aecb104352e81ab5aaa8db58be27ff335e69388c09a8eda09304d2a. 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/KRA661400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68074674f94b5f07a12c81b006fb19973a82ef7cab56f70c206dabed96764cfc. 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/KRA661400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9edd832142edbe8e48a8a81dc7fef356faf73d4f375413f8289d241704658d0. 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/KRA661400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b328cffd324525cee8b39e33027b15412b1d1407f4ad89886cc4131b8ea6d5c. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:32:49Z), 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/KRB001700008.
Stay Alive (Music from Begin Again-Episode10)
Road to Ithaca (Original Television Soundtrack), Pt. 1
Road to Ithaca (Original Television Soundtrack), Pt. 1-1
Road to Ithaca (Original Television Soundtrack), Pt. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42465af5c275df557d0b66692484723cdd7d6a17dd7f13b112e7ca2d96069b81. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/KRA491800688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d92e61cbec7b96e70b51fa17739ab69254280a7263f51900226e8146a1a9418. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/KRA491800689.
Road to Ithaca (Original Television Soundtrack), Pt. 8
I Love You [From Road to Ithaca (Original Television Soundtrack), Pt. 8]
Road to Ithaca (Original Television Soundtrack), Final
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa685b611adcde21cda6562f4ad5a622cb7c334df592553ce306142c90a75a548. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/KRA491800858.
[Vol.90] You Hee yul's Sketchbook : 58th Voice 'Sketchbook X YOON DO HYUN'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ba3f8702a3f76d86f6894d1a13325feb864c32434ca5b44a1eec1c503d4ddb. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:54:57Z), 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/KRMIM2121723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f99f265eb357c5581996d02e4f92d0c0ef38336cfe0a0899354e5d5cca4f53. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/KRA492100908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d926235cc049a66e7875ff13107b33ad9b3666bc50f3dc19d5d4f4904b36df. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/KRA492100909.
Go Fast (KARTRIDER X LINE FRIENDS [Original Game Soundtrack], Pt. 3)
Again my life, Pt. 1 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8225085d255943f38f68662acf6de060878ec30017f6c98f7681b75ebba1b547. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/KRB472202110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e660e1a394eb1621254105287d2e0d53586d6c088b3c0d83f19dad50a7a0055. 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/KRA662300001.
최강럭비: 죽거나 승리하거나 OST from the Netflix Series
Rugged Rugby: Conquer or Die (Soundtrack from the Netflix Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33cf8748e952d42faf30b8c8f953a401fd62c962dae63596c44cf9fbe2d8ab8. 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/KRA341558641.
The Way You Keep Friendship (친구와 우정을 지키는 방법 - 봄여름가을겨울 트리뷰트)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842534be14204a4f3ac40fa8dfed8b2bf2c5628cbecc7d6b2390eb715bd85808. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/KRA382407080.
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 0x77ea5c2721c3c64d2b0ac753dd7ee9d6c921600fe7584edd6c423ffdce257ed7. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/KRB241100006.