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 0xfcae52e0515703d2cd220191c3ea82f2894dd1c20eeba12a1a0c24a0e44cbedc. 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/7920c6bf-f3dd-49a4-aa49-5381b1d5b3fa.json and https://artists.proofprofile.net/proofs/artist/7920c6bf-f3dd-49a4-aa49-5381b1d5b3fa.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 0x156aca77f1716a2bacd245da046085863861d218d0931c229a67de3cb2199da5. 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/TCAEX2045492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4132e943bb1584329a422e84a5d56a50c273fc657f5a2d2763c4a9b85d59324. 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/TCAEX2045494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d80ce5ab6863d043b35fe4fc140075699fec170e695c82ae9bfe41eea6759c. 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/TCAEX2045497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258cc007e4832ee7c3b7fedc0050d99965ae4e956e7e58b3dd7d38db29e78bc5. 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/TCAEX2045500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf6bfabe231ba52be79467e2354dd5681713fbd43e60fb5c258ebafe6f4e495. 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/TCAEX2045502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6c63ca85b43b264e234c14383261c1aa901549a17b37f48ffbc1ccf5b9ecec. 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/TCAEX2045509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362eb105f3a81077da46b4fb8efa561919d06b4afdfae0faeca06b983d55c8ae. 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/TCAEX2045512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f01da4476f5fbc84fdadbaaebf1273563a60c37093e7e0c08e6f7df592db41. 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/TCAEX2045515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7070f49510690d05b65aa0760ad5c9cdf25c13d9dad096159217443f97bffcb5. 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/TCAEX2045516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cce10bf03eafa8c9fcaa74c6658b07b69738a4ad0eaa731bc912b28cf352b9. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:21:02Z), 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/TCAEX2045519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402a6888c84d5dcfe0a11dc0a4ea4d161e6c8861c5289656aaeebfe5d1840221. 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/TCAEX2045527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd186b9920baede98aba8b093434bada316929400e52f01869004c26e60bd0df3. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:53:34Z), 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/TCAEX2045529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752529712285f8cf9ec2fe717a3af58bad0275c7cac7c60b6aa90fba69c72cdf. 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/TCAEX2045533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb787f66ef029e55952055b785ec63b11759b17b31507e49485993b64e38edd90. 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/TCAET2092863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f56e50ac91d2bdcab02309d45e8af41f1daa84a8519c1ee804627244f17e29. 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/TCAET2092864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6107148df41ca0d6b36914a23abd79aa5d9b37981b9b8350c63796a30c7bd1. 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/TCAET2092868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d6d37a441f7e8d5e4b1659cc539efc2ca817242cf3f71ac7ac0c7abb452754. 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/TCAET2092877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88031336abca6714cce3aed925af8f9f22e511a6c15768c39102611d669a602. 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/TCAET2092879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aaaa6a0e1d122df70fa00376ea05a7262d4decffdb3a1f2140e02a302061178. 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/TCAET2092880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1a199ddca8c184ee36070bd142777748162ada79bd48b9171537104e21444a. 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/TCAET2092884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc37271eda9ae6d33cdc22838c0717e84dcdd2121c74db0cb8ea2f536706dac. 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/TCAET2092887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a1e80803959f2d738939c3f264a4545b076a34fadf2667ab7737409c1be8e9. 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/TCAET2092888.
COLORLESS (Feat. Sunnie) (Goddess of Victory: NIKKE Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8fd77a9cc7062013cf7897cff404d862ef40cbe1367f364bab20aa537cd433. 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/KRB472401309.
CLAY! MORE! (Goddess of Victory: NIKKE Orignal Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ed0c95b13f4331412665354ee0016a5faa29515d3af0a89ca25ee3628fde62. 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/KRB472401026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa8378cccb2135f46d7d0d4e64491597524073ff341bed184c050c9e2d8ff4c. 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/KRB472401027.
I FEEL SO ALIVE (GODDESS OF VICTORY：NIKKE Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c09df47632f2193910e574a06197ae0245e0ecb2fd2faca0ee36786a929b543. 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/KRB472400459.
BOOMS DAY (Goddess of Victory: NIKKE Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0ff34c1e104afa75117b2a4022772b06f22574528b966c31ffad3b8ea05d4f. 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/KRB472400307.
Dirty Backyard (Goddess of Victory: NIKKE Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8bb000d467a1d793de68425c285f2ce201a79613d59f9019d048ce5a3d3968. 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/KRB472400169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434f016847bf9448960a1d3666e73447b56fad1da6702b6d6c69cafe44ee7a78. 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/QZMHM2358768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b8f64d99686bd55e1d5c257fea572b2ebf330e79b0f19247dd7cb0fd7c31e1. 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/QZS662297506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4536a0c1a5e6dddf9eda411e15da393fc2adfe801fdaf68962ba47616c5ae26a. 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/QZS652210020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e778504c26edeb24207ba76467a0f3c9ffa1bda62b160eede6393a2bdddb3a. 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/TCAFO2141618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b9452780d70da04b20a407df1811dd22bf0e81caa039012e813143f8a365ff. 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/QM42K2100353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1b390f00b137fca9b10abd80be126631401a93b1e8516859ad6698db6c6d76. 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/TCAEX2062779.