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 0x271ebc918d4d96d502fd3f8fa0d66c08674a39914ff73f4e7580543f1075f7a6. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9489e294-b9a6-4a47-94ae-9ec0ce4e31f4.json and https://artists.proofprofile.net/proofs/artist/9489e294-b9a6-4a47-94ae-9ec0ce4e31f4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Harbor Area "includes instrumental version"
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 0xcea6198fbdc5778bba221f3a8e23de846314008392a62613024eaa70f4f26043. 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/USCGJ1080510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e527b328ad95fdb9e4a5ebcfb42808ef5008fbab4fd5fcf2696d1bedd38d026. 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/USCGJ1080511.
Dope's Gotta Hold On Me (feat. Ese Rich Roc)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf070655f64395da763c5dc233721760d9e0330b5bf407f86b6411dafbcfe4e2e. 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/USCGJ1080513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0eabba1664aa19318ca64784ca67b6a21918709b60080fa74dfbc201a8748f. 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/USCGJ1080514.
Murder Goin' On In the Area "original version"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c5b65006f9ba21ecda96cdd48637f56c0210e884d05bd8c13413c6fcd4ff4f. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USCGJ1080516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544f97ffc338a013c9b984c0eec953427868e6e258e6f367a42d713f8206e2e6. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/USCGJ1080517.
Wrong Side Of The Tracks "original version 1st verse"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4885093016a5d70b2e0209b34d874b450bc5147d879d04448d2501ca91df71dd. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USCGJ1080518.
Smile Now I Won't Cry Later (feat. Ese Rich Roc)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3e571b9c87bb64a33a9df046e4f81cbecb095a195b633666a9a62a7d358968. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/USCGJ1080519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31efb33d4a876f31e2fb6ad1bc24fdbad97133231d1885e1c2ea506a3443832d. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USCGJ1080520.
Rest In Peace (feat. Tricks) "2010 version"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36fad3cc3729d701486445e6adb9d4b6b0fa5a24347ab461f442c7599ebc14a. 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/USCGJ1080521.
Soy 18 With A Bullet "includes demo version ese rich rock 1989"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e7fa705d53f5ea07c73bab98a713757dfe98d89b33257cad61bc94eeaad25b. 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/USCGJ1080522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1de7869fa188f85803f739cca0b52442e48577b505cd9f85ecf48e33db58bf. 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/USCGH1729599.