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 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 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 0x104e1905a2b4b9d1f8559b8c0902cef988ef2971de625da5219798894394892e. 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/DELK11400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f227ce71f3dad8ed37256f87b88366f1ac85716850e32ff1ac58fc0032682c. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/DELK11300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec18564137d88874c8416f90afb5568403324bf567d133172a31899aeb42deb. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/DELK11300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004d16959f341eda43b263d5361080522311919132091aeeeae59965fa42b34b. 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/DELK11300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c4e096854a93923278b415b9934f32233bddaca538c4eaae24b2be3d8900bf. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/DELK11300066.
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.
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.
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 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/DELK11100075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227e049608a48a8f934b764739ff184cbd65b72f45bf8f010d1c7c9b44d943b4. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DELK11100079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6baed727713ea10e21895df6e9e168a3e2510a6bb61fb2fb287575dbdd48d88. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/DELK11100081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde46240964e1f4b638d44562602035311205c77075e09179351c50045137a74. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DELK11100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe9c972c70ac339a8fd6f34ed73b5e24bd1b60b95ae37f4583c51f1d8bd13d7. 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/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 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/DELK11100091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30904a0d9514b9fff2fb5010127ad1819c9177a4129f59fc9404ee13847e37a. 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/DELK11000002.
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 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/USQY51319430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301837b7a861c7cb96892f2d711f00ae5071f3da5079172089b1bcf24e968e4c. 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/USQY51319432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aeb49e2505ad93cf02a72458e4af91275c6771c2f5c2c1dcdd409eae208c116. 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/USQY51319437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceef974044f1aa8a2208ef28df2ff6cf48241895351423816d6500ddfd9be7cd. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USQY51319441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea2f0a34b6149927ed65c56b78d5659f31ca8db8d11afadf29778a3197b3e48. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/GBBYB1401423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c1ed89be20c8235fe43415db015b209d7e09e360f3f2504e1b207b8c83ed82. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DELK11000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ab44a9dbffefe0fc9138a7cdcc2d58e8fb7a58499e0a11dc40d7eb9be8c2e0. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DELK11000122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e63d2be2f0fc9924daefc92ac460c0ed09eed69927aff34132e7b591896ced9. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DELK11000127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd9a63950838bb64543ce82dbbb405d2ae67e7c3774fb96cee9f06fa349a1da. 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/GBKQU1544900.