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 0xbf7b452a52287af9b25d7991dd1cdfd6b985754f8226e88a8939ed200a786598. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/61847bea-4ec2-4473-bbd3-fc517f8c6751.json and https://artists.proofprofile.net/proofs/artist/61847bea-4ec2-4473-bbd3-fc517f8c6751.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 0xfdee535c81fb540cc9394af344df50ff016f92c1c3d758675e8910fdc83ffb76. 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/USA2P1392274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb16f5dad365d77c1157b17fcb61dec1ba71b72cb96fbae45d821be12e504f11. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:56:08Z), 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/USA2P1321344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd044f6a796f3b9753cd76a1a1a6549bf5e1bd65d0378efafa936652479761ee5. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USA2P1321345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591f0e5a871ea6f2ed7ee904895d1426c69e0b30b318ebb2bb3f45ee2bd4305c. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USA2P1321347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd4a90d0f552857769ac1059a8fab4feed8bc0020900bf4d3db4979e166eb1e. 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/USA2P1321348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa2cb97bca9361e5ce8744a2539675af580bfe5371fab827cc70be1752c5f4c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ZAC032300466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e4ae86d8653d7c17def3e58d45765888d08454517ce4a69771d038ec898fda. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ZAC032300470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc3204a4c672845a5c6adc004d837c00993d1a1c341bf89ab366fc73ba51cef. 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/ZAC031901537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3589a0a880e2d3345e3f2f6c7878f19b252f5b6ac2af082ce064abdce30eff5. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/ZAC031901559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08eb19d2ef4920723a4009fc49d379e278eb04a6bdf594792b67b5ef18e934c5. 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/ZAC032300472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2ad0ea43d7eab4b54cb6496f352dfb799766bbf66ff7313a47acd7aa7b550a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:11:25Z), 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/USA2P1445898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9f4b0369527acd6f80719aba9817d3c369dd2099f886521eff1252b582bdf6. 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/USA2P1445905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3270cbdd48710b8739075b0867ee21e5b38f3996fcc33d01aa845f638513f8ef. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:35:24Z), 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/USA2P1321365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba324b37dc09469a40979abb90cd804229491f51690879f1e2de398a3e3bc43. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USA2P1445889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f2228f9f1097b09f160dc736fd8d64d579c5e7f8c853e858a61a86d87346b3. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USA2P1445891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e23dbeedfeb76ee095f5ec8ffd31fd81aee395bce2763f97793a22efc55dfa. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/USA2P1392276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770923422faea58d7d388662e02e558374b4ab83ee3a9c55b2643d72858d3a29. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:41:20Z), 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/USA2P1445893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9adebe12bb6b67db2c1dc0a646580b931f6a9fdca937897589876fa0a7b0e30. 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/USA2P1445894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1aa9d0d994401f4a19890dc981aa77e2867bdab77926825e2a43d7801b7f2e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USA2P1445895.