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 0xbdd5e402b44cc917e63f597219fe124716805d22d0f5bb29c2ce82f32b7bd9f7. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/036623e5-a147-4752-9d79-5d3dbfa7fcd3.json and https://artists.proofprofile.net/proofs/artist/036623e5-a147-4752-9d79-5d3dbfa7fcd3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nguewe - Da Africa Deep Remix Radio Edit
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 0xa2935c3a8254fc286782b98855c227f3c0efde6ce5852215fa5432a2c372c913. 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/ITBVO2300246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf846f80ab06a27d6e00d56959fc0cb7e36879fb113795cdf759f193a69e06196. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITBVO2300242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58deaeb003488b829b5aa48b1202b62b5ff2f5b8b87e1ca95253e02ef4b99f30. 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/ITBVO2300243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0163b7af57b6a8d7c32b5c92eb35da20d7f81ef40fc9b4c4273c2f396874593c. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/ITBVO2300239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d8f36188adbc7de8cbf896de0da82e395efa2013ce07be0d62063e9e6da2be. 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/UKLVE2301410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48713b7fecc37826af88b1dea7e2775847535f0b73bfd3bc46d856d6aec16519. 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/UKLVE2301411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66308c732f791f48742196a51da0778317252dcbeb3167dc7770dd7381652c03. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ITBVO2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c3609dc32aded9f933edd5b9a1b148979ca0c53f8404f92d8c62599ceb5c8f. 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/DEBY72400741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac96793978d2699e873f7339ad1cc502e690b2d72d3a4c5faeb5d1e734dad12a. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T13:26:15Z), 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/UKU932560120.
Bloomingdale 2021 - mixed by The Palindromes & Dave Winnel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83d800837294b75eecdba1f828a8f608d33bdee9097d1e36a07bdf6095827ad. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/NLD682102434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca1b77baa2f48d57256e6587694db87edd81e8c3eb3fd48f5df87cf80622089. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/ITBVO2100155.