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 0x05dcb46e651440836d917e728ea334ffc9e6cd81e9b961488ac0e7c1ec7cba8f. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60c64662-4661-4e02-a0d3-ac068fc5e1d7.json and https://artists.proofprofile.net/proofs/artist/60c64662-4661-4e02-a0d3-ac068fc5e1d7.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 0x9f8e5f6d724603619406e2156ee7c41671e83038d7c43683aee0d17ddea94686. 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/QZPEW2594722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe093526b222ed0b3d0def2821c3aa214cbdc3908ad73f27b6160218f87429c57. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZPEW2594721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5a09e6d1965e6351ce2ed6921127667853bda43e1112580f5ef0c090b93f41. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZPEW2594720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7493638f798b04aa50334c5154000f37950be2292de26c900c87d31c3a5c5cc. 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/QZVEM2527079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0011db6ac0102b7b697f665afcb58539c30be0eda4c0ce377ff7cb21c5f76980. 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/QZVEM2527078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7b94f9a0a5487850cba2e8ddd35a92ce08a59943e494866c2eed563b911c05. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZVEM2546879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415d95bd8ff22a241a5b77e28f9c334ba64bd3cd904b662be9225bff6d23b97e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZVEM2546880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d60cb0aa600b5eec6be7fe5fa5afce90532191d57faaaa97465e78fcf6f0ec. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QZVEM2546881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73bf0c39ad12f785164549f71c5014277af7ae1fb46f4e7bdb4546e4a9dc5f36. 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/QZVEM2546882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b37b219f351e835981c086cf673e6643d796d9f6ef8b05be93da3a140b2b04c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZVEM2546884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78b95fd28e6340e2b78d7ec18452c2603abdcaad1261270c39c8185064a2441. 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/QZVEM2546885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b547cdf28e041dc1e9a80e7b9e31f1722d778b39141073f79714dfd5070a5e. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZVEM2546886.
Die Bibabutzefrau - Die Flamme, die Niemals Erlischt
In the Whispering Woods (Raindrop Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd033768befe9c8ea9844b98d3fc21dc39d45ed5b495c3f17dd26763d2b01a325. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZVEM2569515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be8c96bc3d1f87d20c0f868720efc132a5da369e1aa615560b0a033cb5dbfce. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QT4K32531523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fe0b7f1cd82bdd541b1a453c18268629383d0bc3054a7614c615cd0f0f832b. 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/QT4K32531907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b001a6b92b56c6cf438560510bc91e13e667c8e6f8f3311f4563bfb847f1f92. 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/QT4K32531779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3daf008133d849bf7463c3ca6a9d580226f0e62c2beefc07782db9a16e4517c2. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QT4K32531178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf1c23b00bcd7b06db8cc6d7d658124019f9833ab2d291f80088829689eeda6. 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/QT4K32559433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f9deba040402d961fb6725e33334220861bb36eb4ceabbee7a15dac69e5ffb. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QT4K52510880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb4be0e743d757c46bc5d39b6a105d59e8fa4f04d270f50e69d2448a0c67279. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QT4K52520308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebf4dbd82e4df038db5a704f6206bd7b4091fbbe0de2331a1cfbd0fc53868f6. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QT4K42592941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc3fad6bedd1a2fb8419f64991f4a859a12d7f9ad16358cc9f65ec71908af74. 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/QT4K42592942.