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 0x8a8bc06b857471400804118b5b0d7b9f1125b88ca61c7edb7c6622bce6551516. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/655b0e80-8b24-4d55-9696-cd8eeb62af84.json and https://artists.proofprofile.net/proofs/artist/655b0e80-8b24-4d55-9696-cd8eeb62af84.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Monochrome Streetscape (feat. HATSUNE MIKU)
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 0x3b7a25dbbe61c9341ffeac1cdf93fb1d1af08ef9e474d708632317e2d1eea5f6. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:02:01Z), 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/TCJPA2421065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43f7681603b20532d019000aa77efb4cd6a56438b5c7b1adc7769820fc06a14. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:45:16Z), 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/TCJPA2422110.
That black and white scenery (feat. HATSUNE MIKU)
Lost in the Distance (feat. HATSUNE MIKU)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07172820c4c6f262762388d91239202b14e68b925f1783aa948e85ae31089b9e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCJPF2545441.
The monochrome-filled cityscape (feat. HATSUNE MIKU)
The monochrome streets that disappeared (feat. HATSUNE MIKU)
モノクロになった街並み (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035089773eb18c5b09d75b344cc8f47ced055719c2cb5325af684834d0e560dc. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:21:18Z), 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/TCJPH2595935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2c46dfa1c3107e5b190a91398c27d0bd90ce965c182dec88db0938d8c7843d. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:24:50Z), 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/TCJPH2595991.
モノクロの終わる街並み (feat. 初音ミク)
The city streets turned monochrome (feat. HATSUNE MIKU)
モノクロの壊れた街並み (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef223b8d644210f4ab1187f4c282b77e765fa144edda7ab3bcf77e410e561b0a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCJPH2595973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451b030d1d08cb2c00cbcf4ffbabd2332166b02bce27f79be0a7dc1f672f9cd9. 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/TCJPH2596028.
That black and white scenery - After (feat. HATSUNE MIKU)
The monochrome cityscape that will not return (feat. HATSUNE MIKU)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e0346307f460fb167843944fd3398ed2ee6899f7b4d83c0a35f07971e9720d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCJPH2596007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63e395aeb3c16dd239f32835802cf7a3e2b259ca091682c54e903a2b21be6b1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCJPH2595989.
The city streets that became monochrome. (feat. HATSUNE MIKU)
Beyond that monochrome (feat. HATSUNE MIKU)
he monochrome, ruined streets (feat. HATSUNE MIKU)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf2f255f87cc08e351502607b9e7950077a772118591665535f8ae6d7cd4669. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCJPH2596036.
Monochrome memories (feat. HATSUNE MIKU)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31a7969c19d1b927e1c4ce7aa1794efb2291873aa5e4d3740fa6feb93c7d1e5. 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/TCJPH2595981.
モノクロにしてしまった街並み (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5be92e86cfe5c9f91fd666b9fe6cf68eeadd227ef60bdaa011695f455c0fed. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:06:36Z), 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/TCJPH2595925.
The monochrome cityscape coming to an end (feat. HATSUNE MIKU)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376c1d9417f31a580b229edf0cec20681af0177ae5292d61ea27a1e869eddb3b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCJPH2595902.
モノクロの戻らない街並み (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103523030303d796f7a55b60103e5c3ffd15d54cff7aa7e6a3e08374e8ea6db6. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:09:20Z), 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/TCJPH2596025.
モノクロの満ちる街並み (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1557e6eef45c56b45d585ec0a8ea08f48ec0e0e48bffd1862f4e25bc8957681e. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:33:50Z), 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/TCJPH2596015.
The revolving monochrome cityscape (feat. HATSUNE MIKU)
モノクロの消えた街並み (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710903945cc45d28c356645eb6cae440f3125754f1d6e384b3b322a8a6d808a1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCJPH2595963.
The forgotten monochrome cityscape (feat. HATSUNE MIKU)
The sleeping monochrome cityscape (feat. HATSUNE MIKU)
モノクロの忘れられた街並み (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b62d9196fbdedd6003bc84e52c559a6a728043fc04c8221e328eacac1986c9. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/TCJPH2595942.
The monochrome streets that are warped (feat. HATSUNE MIKU)