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 0x4807b6d09bd44d4c07b90eff702d4bd0507c11d905b2209971658d4079ba556e. 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/310b4ec7-0ae4-460d-a7f7-f9e43537b43f.json and https://artists.proofprofile.net/proofs/artist/310b4ec7-0ae4-460d-a7f7-f9e43537b43f.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 0x124f0addb724bfcb6952f21e39f8d5f9f336693df1b78c53142c20c97c576f03. 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/USCGJ1636942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55beba1ad93c625b1d7dd4c117f51d8f54a2fdc4cb28d9dbcc003c02c81c8c2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USCGJ1636943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a5772a857d9daa53c62c3b6b3dd56b8b41459742a8d2169d4083bd0a3647f1. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USCGJ1636944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b132782fd2ccbb5b721ea3b83589eea6a18e34957b3d83e78ff4b6420d10f7a. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/USCGJ1636945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb53cee356e27ad94e4779452ff2da98c6cd632b9f4f099a90548bd8152c1ef. 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/USCGJ1636946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5d3a7d280a67e81261a0e1e6f67a88426bfdaedfdedb4381e0c3b1c49dc1ca. 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/USCGJ1636947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5610088adebb713efc5f0078ce95c95f59f3fa9c9549ba4b79c5452789fef0. 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/USCGJ1636949.
Chapterz: The Lost Pages of Eibon (Rare Sessions from the Witchez Den) [10th Anniversary Edition]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d7af0ddf470e6a28fec01d5a6442e2a35a647e4cb63806264d6c90933718a3. 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/USL4Q2061818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b4c18cbb8f1875baef7e968cfe431c0ee9d51a2a84fb7a158c031c3d12a145. 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/USL4Q2061821.
Don't Care What They Think (Bonus Track)
Dark Half Presents Damien Quinn: Disorder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2484ad943097743a283ed8e19bb7c0ffe6a50057d02141ae270a04b10ceb186. 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/USHM81909880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe074cc1ce2d5b8543a41af5421048a6a5262fae6e278de08dc40c8cc701e990b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USCGJ1571702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37736ac7f66f88c5e7647b26c1fc54ee16ebf3cde7d6be2b03f5a9b306cb804. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USL4Q2061819.
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 0x807442c2e3661db21398ac96e226fe7a6dc16529dea4acb4b0ab4d0cfedc58a2. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USL4Q2061820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b95cb53ce5406c7bc8029631d7fed0cee260801f8ace21529c8fe93b89ce8d. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USL4Q2061822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32f127c7b7b3767ff8f4c1db0fa9a414f45743f616bc4d0843190f7051904ae. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/USL4Q2061823.
Just Another Death (A Cat in the Brain Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e75e438ea78636213992c6e63c15a17a4b492c3203bf18de55a5f990b5f24c7. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USL4Q2061824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997c2fffee3db9556e8ab14d46cd32a3dbf9c82309b8a735c4db98570f5b9f80. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USL4Q2061825.
Dead and Dying (Stir Crazy Remix) [Remastered]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5988ac5f7af4747cb1fa74f69ac7c600e020ee57b898505a054e197bcb3eabde. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/USL4Q2061826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef42fb783a88a6e2f20aac934ee469eb3e56bbd6dc0fc659679ba8516452571. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USL4Q2061827.
Last Call (The Last Days of Pompeii Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8194c65f1eda2b58d4459dc3cd7c2a2c18c5dfe304c6f501d826dc32f5261853. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USL4Q2061828.