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 0x7b959ec537d85dc90e883c80efeaf11fb69cd45abc2975c21a074dfd41a713c9. 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/739d0551-52c1-4a66-b3aa-9e274e5a9882.json and https://artists.proofprofile.net/proofs/artist/739d0551-52c1-4a66-b3aa-9e274e5a9882.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 0xf7cb3a3ee21c01959242e7670af53b5cdbbe6c167a3df2eeedbe3231df27b35a. 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/DEY600100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d2d39feb9941f2490a4ea3ca2346677a99ee1b7e24421bab1086dcf2f0c27d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DEY600100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16f420270870408c62f75efb7a31419b4739b11f3bd377509acbb536b5c6c04. 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/DEY600100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd869ecee15ed7072f3f6942e527fa014e84bb8ef7798c56334a9df2c8a91e6d4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEY600100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db9ea8462740d97397a07f9a149b556c81f38a4bb6275bde9c4753f90296365. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DEY600500783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b6c5234bcc89aa37e9ef38ab2985db0672b0cc607e817ee9b1f35a2e200d26. 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/DEY600500796.
South of the Clouds, Pt. 2 (Gregor Tresher Remix)
South of the Clouds, Pt. 2 - Extrawelt Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ed5d9d4ce5135e662f2d1eb779d2d5f33906c0d4e5d77e60af873cf288a616. 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/DENC32200260.
South of the Clouds, Pt. 2 - 2025 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d135a25a06c1a57ea15885e86583c5253fc44ce4656dd6ba9c537fb00f022c5. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DENC32200262.
South of the Clouds, Pt. 2 - 2025 Remaster Full Length
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0be11109fffea8e752b40d7dd48618daf0e7b15f74d0e9d59a57e618da4bc9. 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/DENC32200261.
South of the Clouds, Pt. 2 (Beatless edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2cf78a47fe2926b676677d94be7aea3e9c3bd3b9547bb3cdc7b7e77a2aced37. 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/DEY600500784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ad2965682c0187802102f70671dde70e00dc3a9d3b514bb5c212b4b3fa9c38. 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/DEW260600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01b6b01cee7129e95ab63f8e75e7208b77065d6ee8427185812fc71f8cc3b85. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/DEY600500889.