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 0xeee7393b9760042374d19bf264629d63ac3d5f35f2de155b6125100fd18a4dce. 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/6d4ff640-16b4-49ee-9e1c-f8ba520a5208.json and https://artists.proofprofile.net/proofs/artist/6d4ff640-16b4-49ee-9e1c-f8ba520a5208.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 0xbc1a3593386a6cb1c53e31a11b56cc4b4c1848b1c2c4a3eb60d66b4f5bb8ce3d. 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/FR6V80972457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef233642cd3c496cb1d81d8c30f154dec3740d917011de89e9c12dc73b80cb4. 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/FR59R1818552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a272e9f49ac781dcf3e394c6644e24b02251c18840b9472760aede9e8533c3c. 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/FR59R1818553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5627e16c570eb2da812f176314689c7547a687856e0bac061a02f73c1e6884c7. 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/FR59R1818554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520c2285ddec00277e31742dea110eff472271aa159536d3d51d7697563d1d26. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/FR59R1818555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e7c01e9fb061b546fe47f4d73185454265b342725f900ca74f059429495689. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FR59R1818556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb9a39e448c3a4107bbff69b5d0c3bdc7b82985c61650b672cff61d8d46bbd8. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FR59R1818557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14901cd3f3f27d67bb02f0bd2ab98765d5d255095177f2bb0be5ddb2e43974b. 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/FR59R1818558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9addd9eafdbce6ffbc1f7f0b366eb661976ffffbcad3ba20e62c3ffb24ea4a6. 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/FR59R1818559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2dd2616a8dcbbb5cd672f858672f77b45e352c3b69710bc1c71360d7ee1a5f6. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FR59R1818560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4923b1d5955e6b714469ef5d836b3a03353f88bd85dab99afb0b4488084c8f. 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/FR59R1818561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad87963737bbf7f0d9878370f2520b4797e5d26b160582b2120c74174c25f3b. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FR59R1818562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cadd359ea1b5bd64af7e225fec30d5d905b31f29b7b0de529bed59d6ba9e86. 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/FR59R1818563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093c4f053883827751bb3ef93128dd1d4129b54a39130793320583b328042588. 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/GBKQU1390622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e2d16343d5b481f092e4856c6c096b10ade87383f4be50814d5645be24e0bf. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/GBKQU1390623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7f174bd832e922e46bbbec3618eadf12d2f94997d979fc779bc555c89c258e. 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/GBKQU1390624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bdd230fe855447097938e15d38661f39d820be877c078e43fbe675dd00f8e4. 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/GBKQU1390625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb56921e5da88f958b1d7ee82e2c5d21cb91fbd665e56328f1012fb45eccdff. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBKQU1390626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cc177372bfe0020c07ebfc6650d20640476acad4013791a8d9aae11a20c42c. 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/GBKQU1390627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbad9ab08a4b1f99a878263f586ca63c4141088d10e3e15ccbf255ec2dcadb68. 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/GBKQU1390628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c798787d55c659bccac2e1a6cf50afd7bb72cbd36c9ef41ba411c466f7b0f8. 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/GBKQU1390629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bcf316038e7d354aa84156c9d365941070ad7c49543bb92be28a576318f684. 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/GBKQU1390630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dcc70270b8fa88f30dd4d5eae8b0de50c87bc404281ee8f55c5cb8cc26c5c56. 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/GBKQU1390631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f1f2f085b4ef082a31f6276b75d9be17f24daf4b1a05f0f95e2ca869328c90. 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/GBKQU1390632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2979c162f448ac7dc60dee7c8d8c919047b09feaa53d19cf5def51753e825bf2. 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/GBKQU1390633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941eab57f4849cb27d19b3e5a48375ccf93caabf6446421cff6cb9eb773aeaee. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/GBKQU1390634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf4805334f9ad237457e08dda4418720945607bf3d2d412ba71d406bec3068b. 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/GBKQU1390635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79764273bb7d946949ee3e5dcfb475a77c26f4b37fa7a58094b8a2ffd9bda0c. 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/GBKQU1390636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc845c0e52bb73e94108a56fc2ebee0f83b92eee0fe16164654ca51d41052187. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/GBKQU1390462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175fd8aba4ee851c313c086afde9093582fb478d09be247a56491dab1b2f248f. 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/GBKQU1390468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87226c9ef14e553735e717657498b9c8e6f25c6cd20b6897cc8da2436aaab89. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/GBKQU1390473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02671aa13d2ff9d747495aa522501b698fabf37e2cad976a6ebbf35f6ea0fc19. 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/FRX201856529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa439e3f35350835b05ff407594cfa366bf85eab2c66363dc700aa61fce0bff7b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR2X41694039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c14e08f741f6dd0706064c9e4a17b47d45c8396df5442d2800de4bfccc74d03. 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/FR2X41694040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ca0768fd519e6c39ff953b586509dd9218bf3f61a8ed3cacd155f60b50c77f. 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/FR2X41694041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0828e8fbcb0825a36c6ea85f46219965fcc9edbbd7de2000fc4477ea5ca57564. 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/FR2X41694042.
Self Fulfilling Prophecy - Mayd Hubb Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702c71f3fa921386638234907b400468ad8f51ae43695ed1621030b34ed0721c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FR2X41694043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61150aa8d7c41b3b285beaa03c4573ab53906c5ead6fb2e07e0e2c99c80daaf2. 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/FR2X41694044.
Dub to Dub (High Tone Remixed Dub to Dub)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2d608477bcd24ae2f08dc8b53728ec9c2358bed0af869b7c63cee7d4fc77c7. 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/FR92U1800160.