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 0x6e4f0a9f20dc8e0f4791cb81eecf58de2b3fe1cc824cb2848d0219fbcc7c5f7f. 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/9acc03c7-eeda-4e68-bec0-b3b770f69c83.json and https://artists.proofprofile.net/proofs/artist/9acc03c7-eeda-4e68-bec0-b3b770f69c83.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 0x992e1a0a6841ed71b8e1adf5e820bee12618a67eb3f36dff711f775d67df95f6. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/JPCR01500610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bad9f69dfaafe9de3c177a7a215c049f249cbc719d8746f79f7ed25558859a4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPCR01500630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6e947be20d36a1c8fb7541269a2cd19a73a5aa28389ba8961edf28d8fb16e7. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/JPCR01500650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc3fc980aded76000054489ea438fef6a19e217e3026aa1bd9622ebbc8ecf87. 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/JPCR01507780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff67a41cecdcb560cec367b843983ea9be6ecfb19b2a4f181361bc74f0004d6. 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/JPCR01507790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18152ff1e525b15b2c39c14c7491ae5c78bb6f117604ff655db9c49a7fc31bbe. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/JPCR01603720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee67195d0bc9cb3eed7ee757e1fbdbbc13bd8d13e49b78a77c4bf2a9981c984a. 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/JPCR01603730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8847a3e78e1b8d9c2d89d61b4d7b80c76eb625621fd3d68799996642c3158fdd. 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/JPCR01603710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71031239f068f8c8442ab3e1463cb6291df799145ba3e9697e41252827cdb2ae. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPCR01603750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb27b3238c3b8eb6a236bdb0ed7eff9fbcbae102376282e6e1ca7f22cdd0e708. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPCR01603780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b188fed33bd6a3c487eaf2b7dc2e3a591c950d9a30d091555f1c56d38a9f356. 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/JPCR01700850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee67195d0bc9cb3eed7ee757e1fbdbbc13bd8d13e49b78a77c4bf2a9981c984a. 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/JPCR01603730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17bd4ee6f7fbfb2ddf3ea0e1898de6791870e194a1684e4c2e18e9d0a7a057f. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/JPCR01700870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391239a3e7eb08bfaae809f8d049241e828b56b3f2d35d59c78b26af9352d04a. 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/JPCR01700900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da439e38822e01e941ea22d59490a152a3e1beca46624467a7ba6ba83d990ef. 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/JPU452010044.
I'm in love with you now (feat. YAMAZARU)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626b58a515ee0a5f5e47a7bfce03906d860b4637be7d91acf6bc0e94c13f3625. 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/JPU452310032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9249ca07b9314666b96e410a0affd5fa388108ba9a54b8ee93f29e2122799f2. 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/JPU452210002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2079d801ea20b2787c6b191c8bc492887532d956ee0d84064af248c74ee696. 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/JPU452010056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd91ce80017401f4dd63bb46bf7d36aeadf634f4177122b1b98ccfc7b3754fa7. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/JPU452210019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d927a7ad7ba01f16cb53638a1a689a282460ce495c4e92d65b2f56809b663aa. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/JPU452110071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ab22eae25aa0afaf74ccea5dd586ecc359c68927ef0c97364819e8ee20b314. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/JPU452310033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea0e9bfa65391bdf2ed93a2c8d4731e641a7f93d3c4e3263dddd28050f596b9. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPU452310034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5995de3f6dbf12c0138c017b67a2544eb4bbc6b4989de37526938e2a0aafeb32. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPU452310036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82073d42a10d252be0d49fa48f2c74fa63e143f20d4a1bc54cfd4edf529f9ed. 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/JPU452410004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec024532799f3e32cb2879378dcc754b8a3798f2497d9de82550a81953ccf03a. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/JPU452510018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82073d42a10d252be0d49fa48f2c74fa63e143f20d4a1bc54cfd4edf529f9ed. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/JPU452410004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec024532799f3e32cb2879378dcc754b8a3798f2497d9de82550a81953ccf03a. Chain 2 (Bitcoin): anchored in block 958635 (2026-07-19T00:58:42Z), 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/JPU452510018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32025bef67f181b1d2b41ab6261ace3e89149fe07ff2990e18be0331a1c5b0bf. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/JPU452510022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfffb07969ca4618bb0bedc777ac9fcc62be1ced04568b040213b23382b0899d1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPU452510023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9b62a0ac345eea7aae378a397897abd1e9de62bafd6245560a32fa02350866. 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/JPU452510024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ddcb109fc2e0491cb6034717d4a3524d1216e8c0e27f6493189b782bd051527. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPU452510026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b24143a772f08a2da0da7ecd1b23414e1ab4939a17c4c7baada391c3f8621c3. 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/JPU452510016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0949de94dafcd825c170d8b1a9b1ae51b4417f51010c82836d274c15d66fdf59. 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/QZMEP2222338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a29cd07f6eaeec9aae5072de70b1723ca27fea0bb88f1f6adb1025de3c1c883. 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/QZHN32203323.