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 0xa56f1c9e499dd5e35a7cc4bc278b4af6e5cce967c0212a8997980edb115c11f5. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/88547b28-23f6-42d2-a6c1-4f6cb22bafc6.json and https://artists.proofprofile.net/proofs/artist/88547b28-23f6-42d2-a6c1-4f6cb22bafc6.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 0x873424abd0375f42e39db0f608cb6d9ffe039b2894a58397d90d2302c7d51461. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/TCJPP2145614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e961ccef3fa91f7dc7b9678f200acc278bc14f569dcdc4e245e6716be8c3185. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/TCJPP2145996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d5bc5959bac710d828bd0f09f384690f42ba474ecf9aa6e7faa3320baf6b0d. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/JPG102200812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe021143a46dfd269f45a8464140841c26237a79676aa86abbca3cd011ad5841b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPG102301227.
かっこよくなんかならなくていい
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89913b2fffa8ec2c4996b9089bcb605e3a9c2d8dd4253be31b0fe268a31c281. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPWP02401132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1f02f123d1e25c0e5aea84b92ed4b583864e71452584249d77efd35ada5b8f. 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/JPWP02401266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0a3a8427f082b6ce7c030f9fca242b9cc75a2a5dc2f38dc3bfbfa5697e477d. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/JPWP02401411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3a2a6e044ad1f074f9cfeb6e4c55e4870919ffaca97dc0f7115a752461e233. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/JPWP02401412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4f21f2e19689938017e6bd7d4e0d957b209676715a740a43b87ddafe236670. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPWP02401413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51dffbd30830d3f6ec7667d41fa14359b48c61dffdb538df3684b12f0901d6e. 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/JPWP02500597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a28a84931ee78bc8755635053d64dcc96fec4179accaa2f20533539f7a37024. 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/JPWP02500708.
Bright baby - From TV Tokyo's "synapusyu" January 2024 "Tsukiuta"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb13b7724e1e32161bfe9456315cc94321ab2e4c529722444bcff9034deca009. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/JPR232301315.