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 0xcecbcb4a173128f6f750ba8929a6c565b19fcb3041754503c9ed81a4c199f3af. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdf618c9-ec8f-4fe6-af3a-f9b978a39232.json and https://artists.proofprofile.net/proofs/artist/fdf618c9-ec8f-4fe6-af3a-f9b978a39232.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d39358243ecccdd65ff618ac263e37843fa8440aa3b62919cf929ea5474d8eb. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPTE01908540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335d3e5371714914e8fb152b539a49d7b826bb329b6ac729ec9ba7989971c3da. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/JPTE02007230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806c62c3d5517fc0368bb4234d0f74316804879d22474b705ccc0bf4330a1b89. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPTE02102470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26754702c7b82875f5c2d82513226c85fa37fe0ba2ec6bf1cc5c3b9f61427740. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPTE02107050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69850e9e45d3550fdfb8327a0b7383de9d8107dab4800343bf78716f27f46f7. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/JPTE02207990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c43a807f746f1647444a7e106bdff3b7cf3a82c35562bba428181ec34aef9bc. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/JPTE02208000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149e3a407f7315ff351e6ef4099bde0ce9ba851e5d8d6f9b2c9ac9e43185e9da. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:48:15Z), 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/JPTE02401140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6eaae9143b04c75b8d0c7ca27cecd3769c42af672a579dfaca245b956c4fe7a. 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/JPTE02403770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ff3cc2d1f3104d476e9ae2e0a8ceda6291602c0bfdef3a356075ebf523384f. 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/JPTE02002160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3f57c6995cbcd8a9eb18e0c5bdbfb2176f87faf017b621addce10732e2d2dc. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/JPTE01908530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25a955ffc1fe84ba34757ea0fb77564221e7c6e72328a7505ec32ff18dad100. 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/JPTE02007220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e351c4d77b60230c9c76deefcd169595830c335532bfaaafd925559c12c5a1f. 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/JPTE02107060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce334b842bcb9e2462786d30fb7029ebb4e1f7652c8def252d9040fac1a34c7. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/JPTE02403810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759dace03949cb245b1d27b9ef177beebebdbd3c08030616671a6fff982086ae. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/JPTE02403820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc75fdc8fb67f6519578cb5165cde27257cc3992747cacedddd465a41aac37e. 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/JPTE02403830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285e59fa8a32cab4be3fe285ac7e1b9a7310b0e5737e5e6fce6578ec13a9586a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:44:48Z), 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/JPTE02403680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4287bc9083017d153f778f9840596d1050e911b5aca1556a3d551fa5516a544b. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/JPTE02405970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edcfa01ba64d5b77323ebd74c3ef63bcd17928e77b930bb95613c410e9e93b1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:39:38Z), 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/JPTE02500470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472118c0ca6d48c9d70bb65a1787beb3c61ad4db534a121a20b1db780774b494. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/JPTE02406580.