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 0x9066ad132e2e5ab96998a87b8a4d7dab81846d466bbca2a0a2444fc77adc8be0. 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/0149d9cc-e4c2-481d-84d1-2d2be3a781ca.json and https://artists.proofprofile.net/proofs/artist/0149d9cc-e4c2-481d-84d1-2d2be3a781ca.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 0x2d1d6cc61fd2cac9cf4c12d43a94ae7c6d1cec67aa2514a3ded35ae0b43328c5. 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/AEA2W2339537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41cebf1dec73ed5c920b2827c4010f2992f6efe45be5862dc1a8c9d290bd8f6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AEA2W2339541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d0188ca0e0390b3d23d5bbe38b70283ee30bcacda315cb95239665a8b2d98a. 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/AEA2W2339542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1679368396a5c8bd4e64b6092f2f3a8f2f621b28a746712bc3292ed4d8f29e4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AEA2W2339549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5499bbb02994c04962502a189d43b31407bc82585e768faada00f0d203982c01. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/AEA2W2339554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b5a7f403d0aeb2f99781ce9dab55158a4466f33efefce4af215d8d9252135d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/AEA2W2352181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4996cdbdc0b1ed5eaca4bbad29e488cb12082033e61914ec49c9443c7e565101. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AEA2W2352182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fc483a1e2821109825f897d3d8ebd2f4d2954372b318a5420a1a3da0176b29. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/AEA2W2352184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da7c02b48e59067adf1cb7f3ad460d7ea08fde676d376fc6b2a6ffaf8d85fee. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/AEA2W2352190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53809b199a2e800a0177704ecf3fe32e3174b8dc8189ab933b5abdc7de5d4119. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AEA2W2352193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bbc193b56ffce156d490bc10257ff3e186f1bb40537027425c9a417327ba38. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE6HN2346968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c475eb3532e182fb6fc97ed0f9fc50377b7b0d3b5cbd1876b352763c000f1c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE6HN2346971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf886a109e1d56db9d81f7576d3834aa136dcbcdcbcf115dd207678a9284e8b3b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE6HN2346978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54900c4beaa396b694c0020eb076486a1b9f1e4903cdc040686425bfcf24808d. 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/SE6HN2346981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b5f1246f000a1c2fb448fb6439e57a600c01cd2eeb1e2eaacfaa8e47805996. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEYOK2308089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3e7932b9e7aa7756c870723d0c906cbb89665b4a51216a7cc426d58041a08c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SEYOK2308093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473282141d39a5999a50b5d821dec89ed064730df2f60e03e878b2dd44ee1068. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/SEYOK2308095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361bfdcee275c25d52b97ba049491ff767954434c50e77c730426d5d2118b385. 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/SEYOK2308099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78a075416093a9f10b2f1d74b0f19e3d8fefcf878bd0750df950df401718efa. 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/SEYOK2308104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdad98ce4d20a79a123172facd4de496f3714ab6a4b6563398ef07eda4e83fe1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEYOK2308106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc957925ea5634b96fc0bf3f4b78fba08e3030cd9c8e50f8237549f0d915560e7. 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/SEYOK2308732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76ddc7c396a8eefbb7177f0ec2788524beb58c508b2710f6ca9aa24b290666d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SEYOK2308733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5baf7e9dc5fab5fb37ce9050848c60ca783fb9cdac9f43056b377dd87d138b6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEYOK2308739.