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 0xed5a1a5e8684de083bd07a21cf53355cb507c7509e1266c37b90cf2da3bcecc5. 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/ea0da20f-6a64-403b-938a-4150af1ffe65.json and https://artists.proofprofile.net/proofs/artist/ea0da20f-6a64-403b-938a-4150af1ffe65.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 0x3922224183300a6f5cf131394bec47cb0c6cc3349094f12af3f4438cab6ae5ed. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QT2VB2447758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d69c9b01114b56bf5bad698e2c4c0a99c239afb55b363b8bb789fa11a4b0b9b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TLVEM2457766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e0a72b9df0ca1059dc0e70e3c3e3e43aa1988fea5389bce58209b1d92ec5e4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKN492403002.
Running Out of Days (Outro) [Firee Remix]
Running Out of Days (Outro) - Firee Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965a01658a3baaf1bf469e079e176ce51fd79857eafd9da7ab9660359c279f8c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/UKN492400165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71677d7df9077ac47f0758e295c438cc2e02475b09c15b002e8b7cd1651d5a2e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TLVEM2457761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cdde7b6284b34df7d9636ee0031599b5c189c28efac4da6bcab7b86f21d9e2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKN492202839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7000d87e1889770ebc55a1441adb6d683f07f5c64ad134590dcf8a387047d0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GX5MX2280293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cb22aed0bdd045154291ecdf10136c984865b442ebe66bb311b0f7592877b6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QT2VB2452285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69324417c0a2b22bd054ca53d7642c4dd05d9ba7c96b9e54d3915d60448a2207. 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/QZVEM1803863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bb92829e2078d8f22a88943abf9281c41f3bbc481c07033221bf5af4cf02ab. 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/QZVEM1803864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965a01658a3baaf1bf469e079e176ce51fd79857eafd9da7ab9660359c279f8c. 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/UKN492400165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b0ef036dcac1151366e6befb0784033975b4addad1da36f115baeab5ff17cc. 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/UKN492304553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd08fe0d9f12e889667617df3a2c7503ca71155d515bbfec8b64fc5cfff9f31. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKN492303397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6cbf6a3eb06d6b3920bb1936cf9c05cd5128c34a085758269252dfccff2d5d. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/UKN492202648.