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 0x806843836444e6a93d95901c7a05c1cffb808b7b1d50e5abd81d16d0e2591500. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/598fb63e-519e-44b7-8602-6e039844855f.json and https://artists.proofprofile.net/proofs/artist/598fb63e-519e-44b7-8602-6e039844855f.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 0x9546e5401a8d826d6882590f8b7c5c3f791e72c0a74dda0c9755d4bf62e3a95b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DELK11100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c71a1587d49d335967e96700d2f136b8b25f585c202f27cd8e4b0ccfd01c8a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DELK11100022.
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
VuuV Festival - 20th anniversary compilation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62261a53183b4ac4e2356e9d1bd2b056dcc3e5bb5593d697bd9b51f1759aa75a. 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/DELK11100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332dde588fe02c8e236fae1a4fee59abe570777bc455e6ca1da7b610083bf01a. 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/DELK11100075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe9c972c70ac339a8fd6f34ed73b5e24bd1b60b95ae37f4583c51f1d8bd13d7. 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/DELK11100084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd5b57abe3e344ea93f22e1a9566ca0fd46f08056789bdb490444a47dd04159. 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/DELK11100086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cf01bad0a3b325c89161c9f617e329cccccfbe51b273ac3855647beba79e12. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DELK11100087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7586a11ac86a149be2e1dcf237986cd9ea5a226b578842cf2171a6b742a2314. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DELK11100091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfaaf023e0a9340f8e0cc21dd250c47a51a64e8eb3240c548ca3d2ad3469652. 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/DELK11000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58f413cbd8516cd3d58b7d964d514f59fdac0aabfd4b61e5ca30d7cd51b5b96. 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/DELK11000005.
Rise of the Butterflies compiled by DJane Miss Butterfly
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa1e39a519dfaf6b277949a1494df43fadd790d28af6ffef1732dbe119b95a8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USQY51319430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aeb49e2505ad93cf02a72458e4af91275c6771c2f5c2c1dcdd409eae208c116. 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/USQY51319437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd9a63950838bb64543ce82dbbb405d2ae67e7c3774fb96cee9f06fa349a1da. 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/GBKQU1544900.