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 0x930f6597e2458be05a2aacc1dce2527c92d9aae74e5ec2330fc9da1672bea633. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f20fd8a8-6349-4c6e-9b0e-ad0364bcc84f.json and https://artists.proofprofile.net/proofs/artist/f20fd8a8-6349-4c6e-9b0e-ad0364bcc84f.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 0x5861a1c13657fb1ffa15dda03fcd40c6f7cd8da6bd43c826018c4ab5b8bb386f. 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/GBKQU2394713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a45cbd524ccb6728c408eea1010bb539b50e03321b03ec35d846e294bfea4a1. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/GBKQU2394714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8208e0441e33750a150489713cfd2a43d7d0dd4700f9157a1420e601b1a5653f. 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/GBKQU2394715.
The Beat Just Goes Straight On & On - Hardspace Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4079d043d58d25676b19d8e30eb5f90304fd50badf213d5210f948e334b331ed. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/GBKQU2394716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a3924a901169c75e1d59596c5cfe4c9b7046cb68dc5b1fc42f32dbccc96e12. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/GBKQU2394717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f35be82e601ef4a1573047416023b51b284d1814ecc955f6c869db7223a089. 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/GBKQU2394718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a748c9174dd39cd61d06836ceec55d2a3bf9298e99a77471d23dc0265107958. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEQ202400010.
L'Esperanza - Original Album Version - 2024 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb24e268386554496755564065aa702fbccb70fcb22de05ab313fe1331dfac4. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/DEQ202400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76bc7288f1202888f4dd42e82c985b8088cc8c36f60a20573b7ec6377008f6e. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DEQ202400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e3fee81741e0587b4766567ef9f63fa2f71af9c171aa3452dc76a6cefe1fac. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLV62323412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a06478a75543dbb6ee435b1773b7efed49ca6662ffd4f1bff9246ff59c667a7. 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/GBLV62323413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf473f13dd99bc29f91e63c7af23300b285c1a662e1029bcc57345dd5785a57bb. 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/GBLV62323414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502acdda9713847cd144cbdd21dc3c37e13c1929ae96e304e8b43d33a955e7cc. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/GBLV62323415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eebf8f659c6a121c326639153fb54582f5fbbd45e0992a1fe78c1814ae695f7. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/GBLV62323416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159fe5e1b8d441d9ca5d4581520739a687ee53d037df68e461569a9196ded1bf. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/GBLV62323417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcec617d1555d9e879fd61c86477ad90b7f47873431ff55a0a281f0e7c8e643b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBKQU2438130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10cd93efc468ccb54f256ba233ed191d5124f77c40821c7b8b7973f319dd9d4. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBKQU2438131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93aeb18e6c7fd784aa3d3b386c4f4470996fc9fda1ade348744b9e60bf82447f. 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/GBKQU2438132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b0adef1ff8171c2432f270408773bf92dfbdc40380407feb89a10c0b2adc32. 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/GBKQU2438133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f805a242f6f872f8b6638879607dd6afd4e6687fdb885cf9f6733dd0b3014bb. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/GBKQU2438134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e04affb041a89f6f1c40144ced22c65b708f3d1010482ef3905df7d608bc45. 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/GBKQU2438135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256beca485bc304ad0848b2e2a556aabc89268e4ac05e65b1278c16a71c53482. 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/GBKQU2429683.
Shri Yantra - Luke Slater Deep Heat Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08596877334ad365baa18201cb7b6ac5de961240a8e73843cd65d4cedabbc96. 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/GBKQU2429684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d965a516fb28bd1e222fbb1178fc8cc0f3733fbe100388721176fb5d4775004. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBKQU2429685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ef129abf9740fa74392ebd8e4b96e10f4c998e0d50d01126089442440b8721. 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/GBKQU2429686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a770e3a83a48b5d9ec045d3a838df37cd6c308f2189add5fdaa24ab403d5882. 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/GBKQU2429687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe553ba031e612869b98a0146074984136d8c15e8c9f5486f1021afb80a1c7924. 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/GBKQU2429688.
Don't Be Stupid Day - Modeselektor Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94026969067c1b8834f4911cd751f899104bc128c1448a3bba10b17d011e3ef5. 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/GBKQU2429689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3980ca73909086a1bca95be54e70a2f726f957fe24f4c8689388ba29dec685. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKQU2429690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d7c0d19898b5a4f4078a333296eb1e7931f519c4f94a4763176936a0803093. 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/GBKQU2420416.
Endless Love - Hardspace, Len Faki Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5c2212e88e4b8673b7bac2fe5391973e170d5dc4b1ad1374331ef9e207324d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKQU2420417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eecf4fe1a5d1ba1b0856dfe92994e98c47c51c652d95f6071891698f44501b3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBKQU2420418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbb745d1a457b01bde6e2d5b8bf9455a8aa25ba8f358445098fa98ecb76d1e9. 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/GBKQU2420419.