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 0xf2a5f4ad8ab15e33e416f7f82038dd643691fbf26d0257a9bdb787a1bb7463b7. 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/fd2495f5-6d59-4d94-84b5-4ade8a28f9e0.json and https://artists.proofprofile.net/proofs/artist/fd2495f5-6d59-4d94-84b5-4ade8a28f9e0.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 0x11cc0d0d27c56e3844e942155e1f1ac065a9d84ba8b72ab9102dadf761f61093. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZNWY2394590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce41a9197d6de882895d3d8f926fc097e1d5de86bf616d048b7c45eb162c73a. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/USDY41631675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570e57748eef32f0b76e93435542cb7e71ed63dae25dc1e70efa43f804f2f9be. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USDY41631676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7995ddb79bb75f6a75f9ea02eb312d8ec89490bb2ad15410174f3407074cdbc. 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/USDY41631678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a0aa0aa635b8c10a97150009f58617b6b432f4762da75863f73a768fe23327. 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/USDY41631691.
Maximum amount of aggressions - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c177f72c3e815c239dd75b7a9d0bfa838825dd5f41d7d50e83fed1974f6002. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/FR2X41788752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c07523fa2eddbe31bb2b4591fd3bf6f858c70c4d76b463c8f96d08e89bf64ac. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/FR2X41788753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32eeb10ba572f094a9b1473eef31036fd20aaa093ed20f6dd550e940e5b4ea1f. 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/FR2X41788755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb45a6ef6b0ef3c7b0eb45d8772d6fad5063f7a8d984a8b321bf5a4ada00579c. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/FR2X41788760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f5f2cd1c40c44a52cde9e635933af9befeb7dcc35cf6d37ad42f9822cf6ed3. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/USHM81799735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f744f1070f38f1f0501d716a1b435b4bd56046acc18cf32136ce67bb5d700c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZHNC2378450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca3598be30fcfc4dd6b2d9759c3334d39ccf4eb943bb09709efb0ef325a1017. 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/QZTBF2334798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e580bd8be1f2eac68022d046029662f6ae5e99cb06f6f50074da65a41d54242. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTAT2382901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad9d37be2a9779dd6e59a01ed383c3c775950a58811676a96450e4d37e98b1d. 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/QZWFQ2334934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca3598be30fcfc4dd6b2d9759c3334d39ccf4eb943bb09709efb0ef325a1017. 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/QZTBF2334798.
Thrashing the blind school (Live in Japan)