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 0x94ea2bc5285d888b70a947d97ed1b96335556492dc40a1439cba24ef1d749947. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6aba3db7-2ddd-4b40-9e20-c543360cf1cd.json and https://artists.proofprofile.net/proofs/artist/6aba3db7-2ddd-4b40-9e20-c543360cf1cd.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 0x68150543d9782ac5b83f8e48c06c2364ce4ce50d31fc5700d577e01c3adf39e9. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/GBKQU1441386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43f3fdd862128ec61499a0b54597742c44f6db430dc12253775e4b036765e91. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBKQU1451028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4024b00eea79d2d5d7bcb0553e03c46727e65f17296ee1f821b7968954f3a8e. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/GBKQU1484769.
Show Me Love - JapaRoll & Gil Sanders Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf152b054b31512bfdf9bde3fe78bc9a88dcda9b6bc2c10008c6170e41ab365. 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/GBKQU1498422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16f8cd9098a4acedc0933a3ac002304275d766906f0f5ec62ee2673629bd55a. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/GBLV61417458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31006bc0d10c8d64b8a909263a6f82da3404e1b454c39217c79780fc0b1a9953. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T08:13:46Z), 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/GBKQU1506015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7273778b257fb7cdd31d7b27aa30d0e78892ea89e0f425e50b13cf3d9157f6b. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:52:41Z), 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/GBKQU1506028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0c356eb78707c5ea726309b3a2999f0e4a6930b30087ba7cdd460d34fc9273. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/NLF711506855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bfb410865f1c7f2014c07cd88829f13424e2ef9efe5be0275cc716181acd51. 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/NLF711600341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da1e74aedf0b51681228b9c233730ea31a42d8a19dca8e93f791636db80748a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NLF711605446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851842ae5336238b1598e6ccb2eb9c82c9bbf1bdb55a446846ee176983f68b82. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/NLF711606222.
Polaroids and Dirty Dances (feat. Kepler)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb236824b8037d53a954142a012b071b86e76bfa8f3fa6ef7fbd27ba5f41368a2. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QM42K1858303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098b593f93cf34e7f8f546aea8cd6a7d2184bcd99511b241c20d5b3b7d25f475. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:41:58Z), 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/NL5WB2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098b593f93cf34e7f8f546aea8cd6a7d2184bcd99511b241c20d5b3b7d25f475. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/NL5WB2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8bd2442fefa0e34b19ecd5e236a7b6d944f755467336d6feed187e190e02ea. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/NL5WB2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6462347be82ee15d7031824585b4249720478c2d9f9536bf36826e3ad439fc3a. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/BEIW12200284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f7457f6734ceb3909f33946607a6a475755bb3b9fe8f5639e78f21e0249d04. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:18:54Z), 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/NL5WB2200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f304a0c1f7fc8125e113c29a40abf972de07f427d84b9a85f53fda168f00291. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NL1ZN2402636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf801fceef159f70a17845b8421d69cfca6f3774bb4f1868c3d277aa843853cf6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DK4YA2400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef062d96714da950b4e1cd099adecceafbe5226cb9f83e254d7a11021b2e5f0. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:50:24Z), 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/NLHR22400257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d915cde905ad9ba558a2d419e343293ef0e773aa8c2f004de701bb4f0e971a. 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/BEIW12100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce248263eb924af12eddc6fcd61588b7c455faa6d3f23d38795a7069df393f9b. 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/CA5KR2442508.