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 0x5c81a6461868d829e6a10ed8ccb39b4a8e3e0400dc053119c516f328d0fe27d3. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/803a3eba-916d-4b89-8803-97f88f9a4fbe.json and https://artists.proofprofile.net/proofs/artist/803a3eba-916d-4b89-8803-97f88f9a4fbe.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 0xd803b40bcc804be2fedab9f214db44cc684b1162280ce2d4ba13e264c8ad6e81. 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/BXDRK1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00c0e01f3075ebb69a0b08566000862e5365d2a157b824edcd315eb1df09cde. 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/BXDRK1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407613df897621893007ccca1d253dfcf7a610f4667a7982979885e57bd30d8f. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BXDRK1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23380f19f2d4a9e1c655b7c66c878f25044129e9dc2ba94005578a68320886d9. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BXDRK1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ee3c75d2b065c742c121220b510c43a4c043e27d8c58f44ddfe9f40de4e5ce. 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/BXDRK1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884be3a61fb936bb811012d14aabed21ac2ef1059f80991b882cf378435c6105. 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/BXDRK1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7f37d2d48a2d658b267c19ece52a6a33074fbe64b5337827f9f55c1d666f06. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/BXDRK1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714e1a6241efd0bb6db1651d9d614aa7530f1b333096feab25760a202c7cbe0c. 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/BXDRK1600008.
Death, Dogs and Dreams (Live in São Paulo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06921f1df4bef4534624f463f7085892db7ed47efe2e7a5a1702e69c888d7f9. 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/QZ5AB1820715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f0f0050d59490ee44db535cc14bc8f70873f12ef647d0adfd6193fdd2e0c04. 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/QZ5AB1820716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570996eb3b0ff927b7488760d815298f9d2d56ff3e6b3f2bd26d5d0044de6db6. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/QZ5AB1820717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0ebb1ac2f71edbca506a6d11a81e597d3cfe2b2c892d82221c0225a0ca7214. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QZ5AB1820718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f328e96a5e4e8f7322a4f0a83ce38eff2b43127bcde5a2d6ef9abd966b7b6d. 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/QZ5AB1820719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03eb4dcd02c8916b2c487ff6ce966cb21e118a16e9399dcfa2ef1e0db98030b. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZ5AB1820720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a613e3f7857b9b9cde7b65b04342d9ce8c3b503825d6fa3b8eacd2925a411d. 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/QZ5AB1820721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25514b4670968709e8eaa994651b9833b4830abde4cbd6853021ab9059f5c24. 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/QZ5AB1820722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d054f6872ee4799474b3efa399da40b2814827492bb92420458afd5e7417c40. 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/QZ5AB1820723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaabfb22544fb60edb95c3adc1db25a86310bc84007d868ca4b531b9d2c4260d. 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/QZ5AB1820724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28a930e734beb8e1f35db00abf28dc70bcf63a7181ef3bdc68f18a0bb394358. 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/QZ5AB1820725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb229b5a58490355861a812e67d3e888c15c917f049e3e8e7b17e32dff2685867. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZ5AB1820726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e981f4cf748a92a98604f7b8ad27971c2e61d0fe7793a3e920231726adba8c. 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/QZ5AB1820727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b40e8906529191ef8d4f7058248a5f58fc0111ed8e6e9a1239edd72853355b. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZ5AB1820728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588767f4c68bd808efc7a48466b4359b68076ee9e94baa52fc7f4b4600cf7f10. 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/BRUM71000092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ce0e8361646c36f59b8dc1c893f6ae95d1598c5a559c97f637d039bc5d6e25. 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/BRUM71000093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452c2aae43c76ae3f8c2fac4b55d140e0129c8a7a016cad30af9f91ba20d9a00. 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/BRUM71000094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc06d40a0721467e07ac29889052a1d7268dbd22fb8441b17e733fb077e605c7. 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/BRUM71000095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772ee5d2eb1261ab9621f36424f845bd23049285e22c55f88656d7ee788dce22. 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/BRUM71000096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39af8f95094cc8d2997e08d456a3081d38228d0cb1d78d599cb328d45fdb26b. 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/BRUM71000097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3219af1a2fa565bdfd954bd406c942f79144882ea5608cf3e81c32dd00dc0581. 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/BRUM71000098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2081f51e8538b8e4654d5637054971162ebb324436671c665f79ca6122b2f220. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/BRUM71000099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919a3eb09cbdab5e96ce97e9feffefcfd82fcf2845b8d20eedcbbe987f61216d. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/BRUM71000100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d68ce46388760678ded41a823ece5aef1df2d5f5ac4afe4f413f2c2788d92a. 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/BRUM71000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9269170b846fa9f8051ddf9b5f9e716f3561ff8b009706d143f426620031ccb4. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/BRUM71000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e90a1e79d9e800a1f33c9c92c401133d1374452e42cba4ec19645ff9b5dd634. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/BRUM71000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bab74fd0f3e466c2d09c989f9bc56698b697a67dcefa53821b3a57e173f9bad. 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/BRUM71000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60ac72c1c566e4810724feb85b5c5a3f52145f7cd0c1cfcfb12708db6825cff. 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/QZ5AB2030489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe18c39e6d26532c587c3ef7be78d1b821e30711232e7a3dba100419b079956. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/QZ5AB1759928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ba8724283482155b4ff04b0ae37ef78abf450619d166ae2130cfc7dc62422b. 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/BRK4C2100001.