1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xb2af223b7197695ecd696b9617733c288c23380becdc405bf826adeb1ed5cada. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79f5bd8a-ec23-4117-bcb0-e42c6d0c967c.json and https://artists.proofprofile.net/proofs/artist/79f5bd8a-ec23-4117-bcb0-e42c6d0c967c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850a67dc966b89244607789ca3b122e21f81251387c19c8d99db3141fec0244d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6zjk7Qbwb9DZ4ykUUoqknh.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6zjk7Qbwb9DZ4ykUUoqknh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f27c388c2980a760c2f523a2ad681e3f8d6cd77d93b49897ddd24efa20c0dc8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/06SDE4FKNvfG9Dxe2GZY3j.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/06SDE4FKNvfG9Dxe2GZY3j.
{"copyright_id":"0xad5360cd8fbc54b5f34c8b1ea0d08f44d1d439ee11ee93b417231e438ffc85b0","isrc":"JPPO01405260","name":"STONE COLD BREAK","registered_at":"2026-06-24T10:49:06Z","spotify_id":"5IGiq3kg0heQbvqSqYXtTY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5360cd8fbc54b5f34c8b1ea0d08f44d1d439ee11ee93b417231e438ffc85b0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5IGiq3kg0heQbvqSqYXtTY.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5IGiq3kg0heQbvqSqYXtTY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6402add333d59520a0d663618f6325e56f3f9b8ae1ad890760e7eaecd26d96d7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7mtWK4llzEK0byFldwy2aJ.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7mtWK4llzEK0byFldwy2aJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef495c8c0d5591852c08bff9c55f5b4aebb6d2be5b77e2e1cdec0f3a378bb126. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/48t6jkWItVU6potugYt7dI.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/48t6jkWItVU6potugYt7dI.
もしも生まれ変わったならそっとこんな声になって
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934da094195efb7d0fa4b2633624baac4aa73deb8cc31598ab1e5656e2980f5b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3iMKletjVqMR7Qr9CP0IIx.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3iMKletjVqMR7Qr9CP0IIx.
奥野真哉(ソウル・フラワー・ユニオン)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5b445fc20d0083855b93f389f51a739ff68d4b31d8497d719a41b2e224cfe2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3XX6BtSylORxt3MhxvNLK3.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3XX6BtSylORxt3MhxvNLK3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850a67dc966b89244607789ca3b122e21f81251387c19c8d99db3141fec0244d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3283kY8hmrJEDBqRqPlpMh.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3283kY8hmrJEDBqRqPlpMh.
Timeless Melodies - a tribute to dustbox -
{"copyright_id":"0x1b355aaa40f25e00bc09000ec811c9d3d68b56dc91ad2a43361cbadd8d1da93d","isrc":"JPK402401196","name":"WAY TO THE SUN","registered_at":"2026-06-25T20:31:08Z","spotify_id":"0sd2HQladgQhM2v4lkQehq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b355aaa40f25e00bc09000ec811c9d3d68b56dc91ad2a43361cbadd8d1da93d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0sd2HQladgQhM2v4lkQehq.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0sd2HQladgQhM2v4lkQehq.
25 -A Tribute To Dragon Ash-(Another Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850a67dc966b89244607789ca3b122e21f81251387c19c8d99db3141fec0244d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6AgVeKrx9tOhGhXBxRtd0T.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6AgVeKrx9tOhGhXBxRtd0T.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850a67dc966b89244607789ca3b122e21f81251387c19c8d99db3141fec0244d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3ksjookQY3iRdHj2YL75nZ.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3ksjookQY3iRdHj2YL75nZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850a67dc966b89244607789ca3b122e21f81251387c19c8d99db3141fec0244d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2FLyAVI4sIf3DEnxeJafai.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2FLyAVI4sIf3DEnxeJafai.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850a67dc966b89244607789ca3b122e21f81251387c19c8d99db3141fec0244d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/38FEetuv3jA0PgP3KmcrSN.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/38FEetuv3jA0PgP3KmcrSN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850a67dc966b89244607789ca3b122e21f81251387c19c8d99db3141fec0244d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0dL6plePjUbRU2BE541enI.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0dL6plePjUbRU2BE541enI.
ROTTENGRAFFTY Tribute Album ～MOUSE TRAP～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f4a855324ead4700d9a74a14c79b084dd2f7670e3cfec4d104b6cf271bcb05. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5g8DxKRjMzoImYhgXWAGW2.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5g8DxKRjMzoImYhgXWAGW2.