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 0x51abb72268dc9c32cb5ebae9b5572640efc9b5454d3f776eb5bd0b4c86b5218c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6985e65f-2350-4e91-8174-41f61a0420df.json and https://artists.proofprofile.net/proofs/artist/6985e65f-2350-4e91-8174-41f61a0420df.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 0xf258ac7e50520d4de1cbf3b0e6be3361d20fbb3c6b4985df1efc246f8c772e9c. 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/NLF712300794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf4b30fcc28530cbae084d216ab27f072b5ae188964f31439fcd59e76ae3fd7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLF712301682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bc37ba6b76afc0a8850bd56bbdb13a11cffb5ae2156c99990ca08267445225. 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/NLF712301041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a703cabf6399292d00e16539469763771faa4fdc9bccb57b4ec96bb74dbaf8a. 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/ES98I1800563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab5b28f995a9d85941cc39fc00cc1b4851c9f24299c402940b2306abf809015. 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/ITSV22500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2166398bea9f661b3921d6dc2abcf6169e74c55d501e6d5036c993377162334b. 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/ITSV22500042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77a7f1bc84b21a06fb80b16b97bc0c84a50512194a6c10c81bd7c6ef749349c. 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/UKFR82500001.
I Can Feel My Heart Again (Kintar Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335a3e5d440fe495adcb72eff2e3bebfadb9a2c30bfc1be2b382243e393933e4. 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/GBKQU2168642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329851dd530154c11fff1f0359f4b1c91ea2c0f271815126d998df2b5c2525d7. 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/DEU672002759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb11be456f212f1218df4de652c2b3c1ccfd2c950af93b8b62b82d3b075c6bbb. 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/DEU672002760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e8e756e24f85816fe78256debe4207030977763a213b1b1c41227ab96fbd94. 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/GBLV62010425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0de24e85f8fe03168b48902ceb77bb56bb5d09d09cbe384994efc9a47f0d22. 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/GBLV62010426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2132880f510fc29308a71b18d0fcb52eba4935fd486f76eb6d9a1843ea671549. 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/NLF712008173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21fed1533cc5c2858d9f3375017c1da84e4dbda78f708d19359c02619cb1090. 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/BEY921907029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca5d4d7740750b3333362e1d4246e1cd38fc53e24d26f1c44d7902a8136d439. 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/US83Z1912461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99af74091a6a6a18c8e6ac65dbf6e9c75258812c0297583a67438adafb3218f9. 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/UKACT1880713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50ded367a3260c37b64a2871f3077f0624b8836c20d566335377f62508860f8. 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/DEU672201155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67980e07e92da94ea058115d82f130dfef47d9551ae97e653224b21d46621c56. 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/ITFGO1900082.