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 0xb294104a40d3769597ba4ff149dfdfed84128fb2e7cd1f6d40890478d131380a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/597ba222-4ce9-40b6-b603-8caaba84a6e8.json and https://artists.proofprofile.net/proofs/artist/597ba222-4ce9-40b6-b603-8caaba84a6e8.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 0x4d3a7d538c62cae10f0e2a8cc0864f98a4a4f6ebf09791b9020dfd23537a24ac. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM6N21461404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fcb71a9b636d4cbb25cea335c6e27d2d092e9f33e3b1dffd0315c845d106f3c. 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/QMPU51508908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdf66a0dd489df5673d5afbd82ab9c4ddf1e529bef3f0ccf5ab161a93ffed4f. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:57:03Z), 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/QMPU51508913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff208fc7d92725b482b870aca986b09a3eee7b4def678af4bece316fbacb1c56. 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/QMPU51508917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95ddab64cea717fb8becd487d6831acb59be532f76dfdf409d146d8fb5ee058. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/RUA1D1714540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288b494d7662a7a2bdb11db8e0a4eb4133dab372fa5c4be5cf361fc4339cfb87. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/RUA1D1804175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd721405262f5133659cd8371c1740a1b78a11ed790bb26e0156d6a3586593a00. 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/RUA1D1804169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6720173678e1e923a2710bb9a940f606bb61ed75492b726472b990894818a96d. 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/RUA1D1804178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fd303162dc37edc0d2a52bda2afd3422893ad197a937423741b302b6a24e2b. 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/RUA1D2243147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa261ed1d3801f5b30b14e839a8ba808fa340960f7e1dd72318c29bd25ce16cdc. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/RUA1D2304947.
Лёд и ветер (Aкустика. Live in Grenadine. 12.03.2017)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab088c81b53127ca5d80590f2f3ec15b510b66b957eef91aa74b5ae60626b66a. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/RUA1D2510425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d55336bbc6e14a4fd5f2cdca196bbef31a32af6085d1ff246c2cd1fcea70e5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/RUA1D2537538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43e1e4ee62c81524cd3cac27fd5e1527a7d9a7065592a219aecebe85fb548dc. 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/RUA1D2537540.