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 0x79e84dce2347feec83475ccabcaa549003820ec1e0f2c5e9754ad3cad28a324d. 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/46c9254c-f64a-4006-b318-723899c7f661.json and https://artists.proofprofile.net/proofs/artist/46c9254c-f64a-4006-b318-723899c7f661.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 0x3624cffa87dad4d82c7cf8af98cadb2587071f9167413b111e3b2181da95f381. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DGA0M2394573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b2da7387186e72823afbf8b92645e98187ed5bd78e8e5e703f27778d101da9. 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/DGA092363414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b2da7387186e72823afbf8b92645e98187ed5bd78e8e5e703f27778d101da9. 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/DGA092363414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b2da7387186e72823afbf8b92645e98187ed5bd78e8e5e703f27778d101da9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DGA092363414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92454e2645bf5b7ab0158c88529779833c8355a42d70f4ad9bd9617cb71ac4ef. 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/FR10S2422556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8289dda1c7674640ad3bec0b5d5c2f1f6757f2face1424df8efd9b506762db95. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/FRX452423714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e41190536ffd04cbaa8886ebad48089a6a26f38b38d01cb9a59b50a0aab85c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DGA072439545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5edf436b2f1005a8c9ecacffc88a08b64d94b24de89bcafd661a1ff16161e318. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:47:40Z), 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/FR2X42571972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8289dda1c7674640ad3bec0b5d5c2f1f6757f2face1424df8efd9b506762db95. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FRX452423714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9faf6282b5cbacd62a9abb8a0e81e70cc5da750c9a2c18439838bd85f18d6e04. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FR59R2472110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e41190536ffd04cbaa8886ebad48089a6a26f38b38d01cb9a59b50a0aab85c. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/DGA072439545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0806d561ea5c06885aef26b580462ad2a47f8b9880fa619fa1840f4113065c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR2X42571976.