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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa7d5601763fe5630e53dde0ddad3eee63a9ab1342647eeac651e0302374783. 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/a1bbb080-db39-4b56-bf8b-09ece7e2de3b.json and https://artists.proofprofile.net/proofs/artist/a1bbb080-db39-4b56-bf8b-09ece7e2de3b.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ea66f26c4e29a20da9929b0a3314c042f5842f6c1bd0147feac710f4d5392c. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:50:05Z), 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/TCAFE2029630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48a0603620e55d0d219ba4a1621fbb6939943343813578f5fdf8836dea79561. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCAFM2100858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfffe69b7cc28bcbc8a598965288cdd9cc511822aa9e7d2685baf29bff0c915ff. 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/QZK6N2157644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc9671224cb63e7aefac01bf564d145c7795c5aa4907c4f9ccdfb7019a0a048. 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/QZFYY2260810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f48756943e8e0ffa7db480479d5518363fe4ec9f2e4a86fb27fc447107f13ec. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZHN62279543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf135ab2bc7db0e83c4f7ec6971bbd66c406386bffbba5d1812f97eb988e0fe9b. 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/QZTAX2258433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1698af416505956c47969e229f5ee84c8509d6e67c8f86d690643f70646a60d9. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZHN32375946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb26d5aedafcb0612bd3db1f47f0bb11185ed69f804637acd6a15b7ad7b6050a. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QZHN72327586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5131bc705e6cc2cdf20f5bb7280f5be6991dececde50f53626a7b1480d024a3. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZHN72330000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9757b89d7def9c55f7a7a51e957bd3085cbc64b3ec6b9d78a1d486c3496b3697. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHN72330001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b1849da8bb26de7dde7726c16c036674ae0252b07aa386e2dc1f58c42f2a88. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QZHN82386921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28998c8e378ea4ee1b93b3b3034611531c5d0e01f3ee14c6afd41a68e8d00e93. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZK6P2389703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76cd91b23456398e6e6dd852dd34a43220969eeebfcc7cb1d356c2d30e554a1. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DGA0H2300290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0616848dd4d04dc0e92c89feab3152957f460e9b18d3ec5a1a8b32a7274edb2e. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/DGA0H2300285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d00e879367052d74f9493c576f3d31cdf79ce87085ea006ce00263bb76196d. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DGA0H2300287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76cd91b23456398e6e6dd852dd34a43220969eeebfcc7cb1d356c2d30e554a1. 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/DGA0H2300290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59fa6db193eb6ca17672d9600ff54685336c3e0152b478913b4248b18dacb1c. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DGA0H2300291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389921a43c9f2100da547d88d0b20361cea5e490734af1a30e33bc61cb8a8c10. 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/QZHNC2441637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14622b57a1270f70b8b9a273302033cce89b463890365527da7bd533385924eb. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZNWT2412496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf244f6f60f26c561111bcea8dbbf350c233ffcb5b54c294badc4e66d92509964. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QZNWT2412497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8904e7e146031f5df36da4ee82b706a2d6e771842f0a2cda85155da8f4be185. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:24:12Z), 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/QZMEP2428323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6d1d605067c53a0fe9482705c206765c7e136ec55e28003c3b306249d2e723. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZMEM2473806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc2d2e93da5f885f34e3cca4edbb9f243642d2cb51b032b0958776bcc7dce3c. 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/QZMEP2428325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6d5e0883af6ab5a8657012d853c33d9eff62138755e71eab359557728bd6c2. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZWFP2423311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa9d9eb04c9afc059bab24cee3651c364ff4ff490e5cc06b81f83ebb79ecde5. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QT3F32404184.
Dead (feat. Shelby691, Zeu, Slkrack, Saamou Skuu, MALTY 2BZ & Lyrrix) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbcbee8675d0008a883a60ca14020b71718a17e35aeb2f70416e77ea1633662. 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/FR9W12221210.
Dead (feat. Shelby691, Zeu, Slkrack, Saamou Skuu & MALTY 2BZ) - Remix
Dead (feat. Shelby691, Zeu, Slkrack, Saamou Skuu & MALTY 2BZ) [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70a69ed9b8376b6ab3a88cf1f83ea1efc470577a391512d4e1256fdedc9fc4a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR9W12209763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a45b8f087bb30369476c000cf48f1ce9f62ff990a1a14eff8ecdca521a9262. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRUM72202511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab9651d47a233659031688a89057f3acc2f043daedc4ae3e15f7c54f1bc5eeb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAGE2275974.