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 0x552f115493915f28c99adfef107cd7753ba695cef83c82218fb95b16c20be57a. Chain 2 (Bitcoin): anchored in block 953684 (2026-06-14T19:51:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6667517e-6177-446a-9735-40e5387eb761.json and https://artists.proofprofile.net/proofs/artist/6667517e-6177-446a-9735-40e5387eb761.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 0x7ea7226aef74c1e52fc69d1b5d9f767b35b53684fd73dbe8c164aac16b323aa4. 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/BCQ3R2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8eb9239bd9b567451398549de8ac78c78f7abea06e1afa7bc6a4870c53c67c. 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/BCQ3R2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74894969d56ccf0af1c6d77b8f0475432b86fc0998c0bf2242ab0a79e0a5c04. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BCQ3R2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbff5512a18cef996fdb3c4bf7d48fbc124d7c11a4b5a15f0baec68129684531. 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/BCQ3R2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf9fc83b1170e4db3611bfe30d625a72c04c69fc54712dc0a534a3c3f61064a. 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/QZNJY2139726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabdc650b11ab0b9d3c4e1604b3ae195c53ec85e4dec1c25d62b3b08ce999c70. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BCQ3R2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae55782e1468e98f6ee535b8f25312abbd6d690834cc12feade7e35c7c1765b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BCQ3R2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbff5512a18cef996fdb3c4bf7d48fbc124d7c11a4b5a15f0baec68129684531. 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/BCQ3R2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5fc875da44efe37df0edbe51d66f768ddbf976dfead144bc775ecc84d64b63. 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/QZNJV2070684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e11c6c504f387fa217c99f26c552d92eedc84134b66b94953e85758d3caffe. 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/QZHZ51954922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b395682c0fc0a411359a29bd2925539f0ed3288440b1819856a14696abed641. 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/GBMA21887405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89dccf914b312873af092d0ceb4ff03adff37ced324950652028b30181d95697. 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/BXY0R1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66220e3479e03d88cbeb228ecd52ff829a96285e364223a2f67bb55789a3038. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USCGJ1840587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d69e7459ec9a893bacdf6379cfd34f6447606a0cf63284baedcd751d39cd129. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USCGJ1840585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5f84532b682d7289ee0913631e664c0abc69b98141f649b775e49d4d1c0e90. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ5AB1787340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3254af33e0d8ae8576e2c56f48a628bd5b23d772e25caf929aa0ee0e80978e4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US7VG1633170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0076945ef120900a79103d97b3d5b0e2e3bd09bbb658dbd382aeb188952cc36f. 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/US7VG1633171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6df2fcc38f50989f21a7c084823dc75bc4031aa81e986178f78303549aefa43. 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/US7VG1633175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d67d9484b66590d6805f38bb8630e2e5c4a853cbe87ed63796c356e155fa6a6. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/US7VG1633172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a28cd35fd0d145af9029222825e2dbd61e8313580b18094d4d3b984842ac508. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US7VG1539054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8795ad32677a629c83b12a1e396c6eac7e4599fb6840730d44cde245dbe81b34. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BRHHQ1400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda10a0eed0f69553da702323fd2ca51c74925191c9ff7478f13fdbd641a83e2e. 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/BRHHQ1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621aa5dc170f4b865c89be7fa900d8cc358e974db59792a2e3f8598ce2916bfa. 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/QZWFM2496710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c1e9e9b0e96f34cad9f10faca5d6a0e4ecdda70732ef072c6d0e1f0a98a157. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZZ7N2482531.