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 0xc0d37270d4ef9a500d2548f607970fc1b4e2e73dd64c7ffb2c81438b0ac5839f. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ba89822-cc58-46be-aef1-147ffe310c08.json and https://artists.proofprofile.net/proofs/artist/1ba89822-cc58-46be-aef1-147ffe310c08.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 0x2e9534fe6ddbe8389eca5cbb6ff495fa5f196e7229366a6751ff44363bdd5c5d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR9W12214386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc6afaf71058a460558b9a1d302f7f5289f31d1369305571169f8da1b79a5b0. 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/FR9W12310123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa487f2eb48b0312a08147baf5419b7d3f6823ff6f357c9c0167ab0840eaf8efb. 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/FR9W12326488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc856709a06e758bc4d8c9a380046e578b6171e8199c27ff7fd462a9a24fa96a4. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR9W12366840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd570f92d3fdedde64efcf2baeddfbf479d62361ca9f30063be9c474db4d245ca. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR9W12414304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8377642b8d2d9d1ff78fa17ce068e0bc0e634a0d780aa3e5b653da9a5ed8a0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR9W12417912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa487f2eb48b0312a08147baf5419b7d3f6823ff6f357c9c0167ab0840eaf8efb. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR9W12326488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969167be7ad039c0d37a08c26bf326d80c221dabc63dd7ded0cea2e0c555c357. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:11:21Z), 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/FR9W12417909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd570f92d3fdedde64efcf2baeddfbf479d62361ca9f30063be9c474db4d245ca. 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/FR9W12414304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa487f2eb48b0312a08147baf5419b7d3f6823ff6f357c9c0167ab0840eaf8efb. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR9W12326488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27631ba4e02be66d8b5a23097c91a057d47f4687acd6741a927275eda38543dd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR9W12326490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e3274c37f45f4af28e0f1d1bd8b85a232fbae8acb9d15df49feb641bcc88cb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR9W12344947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf971da5cbd50d0724dfc448ec838a24ecbe13479511ff9797318cb2a643254f5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR9W12344951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8377642b8d2d9d1ff78fa17ce068e0bc0e634a0d780aa3e5b653da9a5ed8a0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR9W12417912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd570f92d3fdedde64efcf2baeddfbf479d62361ca9f30063be9c474db4d245ca. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FR9W12414304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a80bb533fc230c878bb99b24948cfbf37a1700dae254672c469a0707a4e709. 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/FR9W12444084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a80bb533fc230c878bb99b24948cfbf37a1700dae254672c469a0707a4e709. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR9W12444084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400dd9077cdc87cb332a3349cc88416b946c55b74387e0254d419e62aa398b8d. 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/FR9W12505186.