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 0x16316a31562d41033faeed7502df03dbcf8fcda7d5c76f3ea011b23cb846c43b. 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/9464a3fd-06d6-41d1-ae3e-cb41872fa34d.json and https://artists.proofprofile.net/proofs/artist/9464a3fd-06d6-41d1-ae3e-cb41872fa34d.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 0xd406baf4d6584e353b8e3d56918dc870db4c57c248f535cbbedea1a09fcfe83a. 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/DEXN92244379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1a8049943732e0ebb0fe8b4d32b79565f3c432460c2dde6b09bf5d49773e02. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/NLT2H2200436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cae9d80a32408bc706c5b8b7b481e923834c009ea531f5879e990d63f94fe8c. 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/QMDA62225489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d1147a88adf96e089cf84c8e22bf86e33441dedb1a4c50761567dd49c68db3. 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/NLXV51300438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92dbad0ccb3e18d73c50fdfa5ea3e3cbad2b8999fdbc01f4bc5497e66ad0e7fa. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/HKA972300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e6ca04283c73b36a81c1cdae253ea4084662085edb86e88bb553803b4e96e6. 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/GBKQU2164209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3c9e9958b4ddf778ff8161bd928efe54a702af4ece9917f362a9f563cf1a4d. 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/NLXV51300462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e00ead9ba067bf3565372ae5cf28eaac790a3d0cb656a1ff6a3ee64d6f58ed. 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/NLZ542100386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92dbad0ccb3e18d73c50fdfa5ea3e3cbad2b8999fdbc01f4bc5497e66ad0e7fa. 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/HKA972300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb266c24e67432262b64704538818c1ae439307d125b5828f367ed986ceb6240. 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/QM4TX2167614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa625257e8292f1b5fa5c663cadad55018bafd0c4aceb5e9a992c8a388f040553. 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/NLT2H2300639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d9337df8f53e77214577b693019730b7b3f9ef3f630e405fb19cd4d4698568. 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/QMBZ92074138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8b0504db896b7f734052c52b37ed547ebd99a9114f413354a06e6c0cb3ce9d. 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/NLT2H2100154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84f631ba59f9e94a927685529c0e9fd0b42cae2813d6802ee5b47868899292c. 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/CA6D22100245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7121155aa76c0949eb78b5b42d551d1500462636e5b3de6983cfb0fec2580c. 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/DEN062003248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4e7d3dbd0849ee31b4bdcd78fe8cc88931d4f62c1f76514fff3700fad0183f. 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/ITV952300188.
Champion - Summer 2021 LEC Playoffs Anthem
Champion (Summer 2021 LEC Playoffs Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadae3b7a86a5d023593050e0926f49f601c8a28e3253802f898cb8498afb7962. 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/NLZ542101304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25786fddc7009b09304c49cda2928df17115bf59b670fac20e377f167f93792c. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/GBKQU2203726.