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 0x2601c873aafb02c2ab0ce8eb21d51a53c88f4d239f4194c5041ca6b611fa707e. 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/cb3a8e45-e5e5-440f-8dbe-fa97439b7426.json and https://artists.proofprofile.net/proofs/artist/cb3a8e45-e5e5-440f-8dbe-fa97439b7426.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 0x0de213d6d80af43fda9b548effca696de2a11ada77551f6d402d8ade4079c1bc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEY472279413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031bf1ac3513bf3956030175d9da29f9aecbf764361e3e82c3c6ac7728a791c4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEY472279414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fd1a789edb49ff2a5c1d79d2119635af30bbc8af6a4ec6630675f68ae81676. 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/DEY472279415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d76202b680974cf37e4c2bab691955d7daf0b2a46f5011d36bd30cbf28d966. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEY472279417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5934a89a976320c4894351c171814585f7d02910f61a3a6c2f9fd42a6e17ca2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEY472279418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c4f4aceebc7e092a4aadacb7ce4b282399ea80a5ca3b5946839c7a50e96604. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DEY472279419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d66b59973a2fc83bef796e3b3dbcbd0fb581ac0b7fe119ba4c430af939cb00. 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/ATDY81900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fef28b10f3e2b19687db922915147c1a0d4a20689d85fc14408fcf7d30c920. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ATDY81900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc29c2be97fd543fa2d3ccad7b60be1fa95f9cd81f63a524532401f214d0466. 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/DEY471617007.
S.E.X. 1984 (Victor Norman's Heavy Petting Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e19cda36c7feb7cf245acbd37a5c2d30ee471b7e468fe80eaf364a489190d9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEY471981982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2104b575bae4e5958ab88017beada8dd075ea46c271f9d094f1550c10b12ed. 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/DEY471981985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb760d01bb0b8c3249b11838917bb1da3450639bd7cd141f9a2ff8422a3b10e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEY471981987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595928ee8f731fbf318eb44d630ee72390035b912b0cb337572e4eeedfa78251. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEY471981988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93a20f1da9b155329a3d45d5f9e15f3ccff371da25269c36f0ef9249f1a1d0d. 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/DEY471981993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc05682978222e2d96fbf4416deb07ea2b87b41b8dd94b0b481080aaacf79aa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEPQ61700546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc59ad8ba5c303619f941a375f2ebd95c0a74db50cd0dcf19e86fc381e059ff. 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/DEPQ61700550.