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 0xdb95b3f8f5ad1181adf479b6850d88cfad58411d5a14bebe6dc2a3b6067f4bd7. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e23825f-51db-4875-9f73-f5f7f9abc661.json and https://artists.proofprofile.net/proofs/artist/5e23825f-51db-4875-9f73-f5f7f9abc661.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 0x2e2960b9d4ba01e31a60f6159406b2e12338cd0ad720645c9d7310c5a1dc5362. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNWU2202984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d86ee572fac4a7a2e2db719d5199a8bd8a7b4acc8daff44f1e5e9fba48d6aa. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZPLS2339507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd899f542bb348e60bea0d7d82f2619e08339dd5fdefb60369a6a855be8d2c040. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/IL7192400779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c36abcac4600ff5678422095676a594655539d682c8e49312ce75f90b88f8fe. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/IL7192401622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9da6c1f10caf993e825a1dbb7f4324e4191e4fa81a5d4d224760698248bf50. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/IL7192402037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934acc858ab907ab88cec7f46d7ee857fcadc6b6fda5287a204254eee12d8c03. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/IL7192402038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848c18ecbe88f5d508f2bb9baef2a3bbca0d619370b0a7c349223eb85776a527. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/FRX762385027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79265857ccf75a3cf130e63a9e656f661413c025b3d29443ede0dcd33236e68. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/IL7192500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba23ddc221639abec13871b57cfa28eda2a6d25438c8502d3c922a0358cd6939. 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/IL7192500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4868160aac3f86c74ace010b316f815ab906c6eee2dab95431bee2b784e2b09f. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/IL7192500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01dbe1784722f316aae5f1f10917a83c715e85cd77d75072c2d271d8a52d7846. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/IL7192500206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293b6548a3091b27eecce574b781e405c4540a737494b9b093c80a1ddc4b06ef. 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/IL7192403187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e045a441627d8a79899d3009e137b20f2198ffa83d1c5927cf335dd7160512. 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/FR59R2583036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9d4884c8fdc9661ede1a703ed38661148d5b12170c3d39a2c69fdc5935b4be. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/IL7192500941.