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 0x9c7c7c5fc33b142c36229c10e4ba57ffc1edba547d163c13293c29dcb6272c74. 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/482ca72b-8fed-42d0-945d-a19fe86ca2f3.json and https://artists.proofprofile.net/proofs/artist/482ca72b-8fed-42d0-945d-a19fe86ca2f3.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 0xf030848c5ff7d63366bdb9993df4616e3bed3573c1e2397155375e65b1e1b071. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPPC02210972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf030848c5ff7d63366bdb9993df4616e3bed3573c1e2397155375e65b1e1b071. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPPC02210972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677a2cb3a1a29d159b441d4011a268b6ca07e0ec3fc3e35cb65d78e829069ffd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPPC02211902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677a2cb3a1a29d159b441d4011a268b6ca07e0ec3fc3e35cb65d78e829069ffd. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:37:34Z), 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/JPPC02211902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae139f1c3b5724d2fda4a1407ff2a9de042dab2add480a219f31bd2be954649. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/JPPC02212354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae139f1c3b5724d2fda4a1407ff2a9de042dab2add480a219f31bd2be954649. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/JPPC02212354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677a2cb3a1a29d159b441d4011a268b6ca07e0ec3fc3e35cb65d78e829069ffd. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPPC02211902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4227b42fc7a03134c9e6cf6fc4bdb1240bb76d30113dd75d6d8afde283afea6c. 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/JPPC02213169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9400160323677c35bf4e513756af3a6b1f3e04790f33bc0d4cf68f04dcd1ba19. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/JPPC02213170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf030848c5ff7d63366bdb9993df4616e3bed3573c1e2397155375e65b1e1b071. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPPC02210972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677a2cb3a1a29d159b441d4011a268b6ca07e0ec3fc3e35cb65d78e829069ffd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPPC02211902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4227b42fc7a03134c9e6cf6fc4bdb1240bb76d30113dd75d6d8afde283afea6c. 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/JPPC02213169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9400160323677c35bf4e513756af3a6b1f3e04790f33bc0d4cf68f04dcd1ba19. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPPC02213170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453ab0d959056fb476f116d6656adce05d4eb0d1eded5e01a06a0e71b4da8bb5. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/JPPC02310010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6f5b6882dabe05f0a381703f2a75ebd87b092faab21cecd219861f4d109776. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:42:14Z), 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/JPPC02312050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6f5b6882dabe05f0a381703f2a75ebd87b092faab21cecd219861f4d109776. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:04:02Z), 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/JPPC02312050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971ddf10b5bd9c5ac8f34b78d6fdc3734800f2e41f2645bd17a32c9c074738e7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:21:12Z), 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/JPPC02312471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16830a7fdb76583f249536cc394a901f7cea92269dfae9ea5896872cd8639d86. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/JPPC02410073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16830a7fdb76583f249536cc394a901f7cea92269dfae9ea5896872cd8639d86. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/JPPC02410073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab4dbdc329503248248fd233f728869c636645a408657b673a620e596482f82. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPPC02311578.
しゅきしゅきメイドマスカレイド
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469ba45f522d0565180d352148efef82c26b8bf6f000342a4dff6fbd5df97b20. 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/JPCO02405250.
Teyvat Film Festival: Genshin Impact HoYoFair Music Selection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6b50e0632c23a9d36adbbb49b5347a63e2dac67a455a0b8b1ca047e5f54e7e. 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/QZK6Q2490799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa350caf950fc34fd89da16768d4f7286b59d420edbe9bd10aa15a7f6c3c2663b. 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/JPPI02302450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a4a886d9653310f9149a1ecfacd67c237775dcee7b7f6d66625ad7c84678f9. 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/TCJPT2248672.