Dropout Kings (formerly Phoenix Down) is an American nu metal band from Phoenix, Arizona, United States, that formed in 2016. They are currently signed to Suburban Noize Records. Dropout Kings have re
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 0xefe9b17380bc6fd4af02f4466832191e0036542d6084e0e4f588d121679b7bad. 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/eabbf7cd-2f50-4d8c-9060-9a54420f2a4f.json and https://artists.proofprofile.net/proofs/artist/eabbf7cd-2f50-4d8c-9060-9a54420f2a4f.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 0xd880adb4f94de097d9f37a0a3e574e2674218b3e9257cc11ebb21d9640994de9. 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/USA2P2230309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3575bc4d0540f154516a32b0be2a2dbc5a68566992869a86f43ce07d216ac7f6. 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/DES372300926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3575bc4d0540f154516a32b0be2a2dbc5a68566992869a86f43ce07d216ac7f6. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DES372300926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6a054795b05a7a21eb53722884dfd01223c6d477a183c3c02a2a621e388142. 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/QZHNB1927142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf532d3b5ead8994f2699aedb1fb6cb562e1e8bbff7a13c2b6d3fe19fe7ad6382. 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/USA2P2207519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a27ccbd3106faf116ddb7fcbd567bf0e234195c3c09e7743aa3b9499302185e. 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/USA2P2161945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27956967bc1c4fa715f15f6db76c5f76e4bc5b86ab2b23ea1e245836b8c3de48. 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/USA2P2146826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf532d3b5ead8994f2699aedb1fb6cb562e1e8bbff7a13c2b6d3fe19fe7ad6382. 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/USA2P2207519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455b910ac0d83405bad407f819b2f671ded05cf9816ab9386c63baead79086f8. 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/DEYO62200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455b910ac0d83405bad407f819b2f671ded05cf9816ab9386c63baead79086f8. 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/DEYO62200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b76791761cca38a87b67323bc03e58de4716522a25a6a2ed297a9e38d569d83. 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/QZDA81990197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182e561beab70100af9efa3dfc7f095dbebf37f52dc019e61018990f9f9de227. 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/SE6HN2480058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd7680a0e3ce63460e832f31f89bdf8d5b952608f2b84a8091d1343a188c93e. 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/SE5BU2480826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c7f846f278013718fc5699ef52c6e6d92b55754a39e9043321929cb4db86ae. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZES72331773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d516f83062e09635b91e6dc6325f6bc698015df3b1ccffae0514f4d26e33f88. 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/QMBZ92074544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d516f83062e09635b91e6dc6325f6bc698015df3b1ccffae0514f4d26e33f88. 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/QMBZ92074544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0dd9f93bdc037e8030438cd28e25cd1431cf7a269c5b0ddbad3c2ef50b5229. 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/QZMEM2065286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf532d3b5ead8994f2699aedb1fb6cb562e1e8bbff7a13c2b6d3fe19fe7ad6382. 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/USA2P2207519.