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 0x18dd159748896290ec55e735231ae6d46bab8eb4e9405ecb6aaad698c543653b. 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/7b3991b2-e326-4544-971d-bc415facc268.json and https://artists.proofprofile.net/proofs/artist/7b3991b2-e326-4544-971d-bc415facc268.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 0x71f982017e24e7d7aa5b6d67e525d84798b6143c8f50b61caba58a33e2da5c88. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USCGH2198936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8f673cb8f55252c4eb847defb397a327d55960b7a47a6dd2c26945724170f3. 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/USCGH2198937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f982017e24e7d7aa5b6d67e525d84798b6143c8f50b61caba58a33e2da5c88. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/USCGH2198936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85bf4c58faa5ed292347733d258d8bd81b22d39bdf4101d0d582012dc3fe22b. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USHM92146877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd46827c0d584249e950f5bd1d5e047ef0c32aee48bc03f87bc0765bc4aaf9e6. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USHM92146878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcacc3c025b619a30a7044c9d79bf8efb31691ca5b8bf5f05c2a1905fbaa0e0c7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USHM92146879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2455df4aa2a112cffa146647bca24a3074ea8e3da033494559799b833e5b47c8. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBKPL2298629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24610391de1c3c599248531ec8cb1e60c6fbd762556865f183d49789845e43d7. 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/GBKPL2298630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2455df4aa2a112cffa146647bca24a3074ea8e3da033494559799b833e5b47c8. 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/GBKPL2298629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24610391de1c3c599248531ec8cb1e60c6fbd762556865f183d49789845e43d7. 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/GBKPL2298630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34867f0d05685936be9a15bfa6bb4da2d90cd328c07023458fd85d4eef218991. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:57:46Z), 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/USL4Q2254743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f99cb4d13ded8de509f6bdffecda71a27f6bb7da01edcaec89f3cc5a86a75c. 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/USCGH2389709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfd2419061c3e20701d6832eb01f7c31dc3fdb742b38d7794da3d7eb832460d. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:02:15Z), 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/USDY42303495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb406993ef0164ce388f18f55f43f133a0ee37816be9da71200470426396127eb. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USDY42303496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe85b7fe406bea0091d4d669ad8a145e44f9f055bd7c60cb1fb9148e74e253e. 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/USDY42303497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904b54b6bbb1ae2a4e3aaa2d332811225f6d201eefe515122f59e549bb2135d7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USDY42303498.