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 0xea8f3e57ec062d4a0fa5317e13f57ec9a164f18e110ea884822bf9f2dcf71335. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5e8e53c-6afe-4832-b7c8-697ddfc2039e.json and https://artists.proofprofile.net/proofs/artist/a5e8e53c-6afe-4832-b7c8-697ddfc2039e.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 0xdee0e6c6b0e6f744891145d60d1e531563935aaed854016760249e116310dda2. 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/FRX202596248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c204838726bd63bdcae745f02ff768c91b0db9221111a15e11061c2f063779. 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/FRX202596249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe124abc2bdf44a3e2d93566c60d4a687d831034f74735e5de0729a35505b4a. 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/FRX202596250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fc5d7674bf41d81c0e083a3a5e9ba13577ed817cdcc730c776e2823ccae2a2. 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/FRX202596251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d6e6aea79e6470ef8757bb1f2d031c64a9510f5dd930aaa6eb64447420b786. 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/FRX202596252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9d3edb04f36603a285a60e7fe6468e04554d5d89b55db706391ef397a8cdb1. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FRX202596253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91264ea3d47484dde291c712f0a4f951dcf32e89c55ab63879cb9d2f628e8c85. 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/FRX202596254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b76fcec660edd524f15ace152d19cf903bbe3fcf419841935ee9feffd222ee. 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/FRX202596255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a52933f8f9dc547204f36bdc4de5e1199723f7353069cf1b712d20b154f411. 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/FRX202596256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb2d4d6f85ccc15d3a9f7bb9dc0c64127cb8ab5a2f022b50f75d9050ea3a211. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX202596257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d35dfefff3faf7d5e4d424b1c55c4f80562f3bbf81d71ba41ec68b97d7399a7. 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/FRX202596258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e0aa61b11c14367d9788333189be45f3409674d71f7c25122f0249c59f83c3. 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/FRX202596259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88585ff8a076f5c8e8d7c1f5b136e42f89f9966e066a913b68debbc3849754bf. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/FRX202596260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ede6aa4e1f0bd5dc644b13feab576580648b86f6389182cea7128dd6908c20. 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/FRX202596261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273727466d0ebd9023c3065a52f0c402e376d7f2f769f6a014930251ef23fd3a. 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/FRX202596262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9cb0e4322b469ba2d9ad6caccf7ffc83e439830992dc91782683ed2c38a872. 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/FRX202596263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fb6bf44ba0dff29ca9cdd3bfa62dd739d32bd7058eb7c99d9a494f3648617e. 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/FRX202596264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4a0f8cce22015823836a1d0bca48175ddd4b860b0b8a489bfffd647d766ca0. 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/FRX202596265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861516e9f68f442d45a7ae6217d1e46d2421782ffcc27047cb630806273c97d9. 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/FRX202596266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1796401b9c0a0bd63c94f495deca10b38dcb7318a22ace2f04ef09fbaf8fb725. 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/FRX202596267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f77064b3414c2a2b71dd05b9b38df2c7dc751b675a6a81acc018a220347604. 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/FRX202596268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45f2d0446c4368b54e1d8b962db798936bb884107cdb7ce17285f0bc1080934. 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/FRX202596269.