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 0xa978267f8994ec87fb34f935d6ace561b1f33a5649a8e71052f2677c6345d8db. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a83ea50f-ec98-4722-8ba1-6bc2a1567c70.json and https://artists.proofprofile.net/proofs/artist/a83ea50f-ec98-4722-8ba1-6bc2a1567c70.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 0x844c224a8e715006136933cb70fe192aef029fa9f3efe3abbdb45142ec714196. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/UKZJ72200345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22f26873790241ed1566972717937f455f96ee579e6ef45b1be144fae44736c. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/UKZJ72200336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ed89abb0a707675d875b20e257bc7b39f2924c61c8f78bc3bd5342f23845d5. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/UKZJ72200338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52428146a5081120ba9b860644e4d87eda3a5063ec91db1e2657e690c3330a6d. 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/UKZJ72200337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee77924af3aa656194d0b9fe22b3f00d3ab9ba67342f112056b9917021fd11da. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/UKZJ72200339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb890acbeaf955b58f46a83531a8c189969ddbf7890a755c7a22959f709d3d9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/UKZJ72200340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049e365c2248517c0a5f39b6fd17aec0ac471df107ad1c70e63e64711eff7aea. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/UKZJ72200341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6b204001d75f0365a5e0fd4a5f4e7d0e9312ebbf01ec9de18e685e1c350ec0. 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/UKZJ72200484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc839283ce1989a82cd460f082c48ed725d07978163f9562c26437bc62f8f7d3. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:35:56Z), 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/UKZJ72200485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b1d47715053cf6f814352e54a9486295369ca1bc5a7a0f3feb97ea1e6ce557. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/UKZJ72200486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9b016763b23327ebc590ce6bc6c256223cabca262c00e8dd1d98bc66fe89d7. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/UKZJ72200490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77f74b56a8d9d201bba6ac349f1023f5a71ea5da73bfa28d84b980e59895221. 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/UKZJ72300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffddddfa18b3f3f1e85597db5a3947d671661ec51e35a58ddd31e0a773f8318. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/UKZJ72300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832aafeb8bc85c7ee379eef9ff7300d6fefee96f3216885cca55933a6bb055e6. 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/UKZJ72300074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3305ef09e97ae41b31e29269378afb402a6986279419826d284d074129ac82d. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:40:21Z), 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/UKZJ72300076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454962e388ace83669c8053ac0a91b888cec9a04b5256a36e3cfbfbe4d2189b7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UKZJ72300079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1930b69356000a336344b72061c526160e88d29ddf7be0bf58ae5a3c4aa5134. 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/UKZJ72300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4307113b71a7b7d6f18f74161102b26dc617d6aaffd7f96c5740ff54cc14b655. 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/UKZJ72300689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d255968a225dc4ff23532feefb40eb6f9cf5b2f54871b2afe5d1853561718b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UKZJ72300695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e1ca5ccb5080c8028f111865932d46a7470b02e47e9448e747cb8a4741052b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/UKZJ72300698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1868e495aef832d15ac35bef329dc7431878e2aaa601fc3c60e781abddd32e6. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/UKZJ72300700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8bedc0842512a7e884d1954a73d0e586d98bdf4cd0550bf95f5e59d4fac04c. 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/UKZJ72300702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abafb7d37716da0c425b68ac2c7d94d47801cbee46bc160c9b5363f34176756. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/UKZJ72300705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05811f04818fc4eded902e752bd90a7f447aae15fe21b407093e357468041fb. 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/UKZJ72401080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7d20bca9e27b2d3e4a4f1ce25caa93b1181bf927323feb8f09eeb5d779430c. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/UKZJ72401081.