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 0xd0e5110dcecbc224b90817976d4ae22ea6d376fd0e3a95540813d2fb1719f7ee. 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/a178fa2d-9875-4c20-b105-6e8ab20970c6.json and https://artists.proofprofile.net/proofs/artist/a178fa2d-9875-4c20-b105-6e8ab20970c6.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 0xa9bb5381ada05cb036c57ba5581a4da29e44276dd093926972b42d7075796af0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM6P41989591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f1bcdceda6f336a86bc4eeab0a71756467f726d2531a1460b80cd49a70dea2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6MZ2048789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b807b12e78b501fcdd6bccd5e6bda978a6ccc5bff74dab440b2e07df28ad89. 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/QZQAY2304423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb713df2e43907592dd6d45a020d61ca1a22bacfe73e14c7d6fc3e5c1bcbbf7d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM6MZ2048787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25cf8c78782f0af2da14bd38f3287db69d654cbeb82e6274f31ad62768176b7. 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/QM6MZ2048791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4725dd681839eb89878f9e7a0b264472bd08944d79c24fea80525e98259a4d11. 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/QM6MZ2048794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dabf9dba217badd12a7119aa2aaf08af3b0477200520a2da9107da8cf04905f. 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/QM6MZ2048784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd615de848490efdabb7ee327b7fecdf8a0f0479e7b5d70e8b32c318131f4254. 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/USLZJ1901515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b967c5257252cf1ea4dd0ea20ef22b8d7bf08d6bbadee6e2a588cb985f0d1a5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMDA71854625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f7a3ffde78013b4395966dc6d09b4f758e10fe7955c63fb5786a489b20ae77. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA71854630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084a7ce251d3e79a06aedb835f509fe9e35169774145649612c308b0d281c485. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA71854634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4945dc5ee6aea0b23d4aa3b1f98aba68c7b52e1f5255d32b09a5b3f6269e90. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA71854637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b96bc588938ff32ca63ec78755d5334d1d1be5f8378c2e1bb9694b1e9b5d76. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TX1861610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fc9ebca39b1e8cc16e391b5f2d292288f7ca60b3705522d4acb287895d6240. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TX1835052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6cd7681eba6a8b435442a1d8323cd97e4a7d9e2c2ab972c0ce4681c0c8a4ba. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ91769179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526310bd28d2b03f68ab7f41c80f5e9d831734a037028c53bf2ce3de82b4e0d4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ91771429.
Madrugada (feat. Killatonez, Towy, Osquel, Sammy & Falsetto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b4ddb2bdb765ddcf4c4d96bb40d48f06277cbbd4c1330a461000aace2c719b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCADC1785953.