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 0x1ff839eac2fdcd84506283413e7b41061f3ffb16e1672ec577406a3b716fb486. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/edd4df98-d678-4c5e-8998-43f4e57672f5.json and https://artists.proofprofile.net/proofs/artist/edd4df98-d678-4c5e-8998-43f4e57672f5.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 0x18db176be670c57b777cd3f6cb6cecefb8728503d7d86d1ceb16e8df2cbb0f17. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/US38Y2418518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8911cc31205244e4ed7f03e5e80d00bed6ee45897d35267e0cac6e017bf9d33d. 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/ITM901300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12af94ce5ab64220228946d6ff8c4f153a5424075334c94f8228da452ff83c1. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITM901300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7451910696a0fad817de39bb0d4c5fdc0eb4545b59a1f5e072105ed8bec719. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ITM901300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc207667907fd3b2d8e96c374b0076820c6d1c98d7972533264b739d9d91efef4. 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/ITM901300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700f2f338fc4a1bb3770c32951c50a843696f546c67cef5132b20193e73df6b3. 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/ITUVE2400073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308a3eba1a536d0eac69750bbb6e0478b4641d5d8f239111ed21cf990aa58c59. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/ITLA72301127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec145f749e0d82f4f1096e9c79009bebe50dfc18d0dd39816bf6119a5131510. 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/ITV542000003.
Chocolate y Miel - Dj Ross, A.Viale Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37f90c7b86131aa9f700f219634cfbabfed7430e62e36aac8064edc3223ec4b. 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/ITLA71700504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d31294f2d65037a9fc806810c26e11938a1cb5521cee9c5e739f9c6ec1f183c. 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/ITLA71600479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d4ee8c406f71a353d4c335ec32d53399a921340c5988c35abb455d649531e9. 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/ITLA71600401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040b2e57fa691732a7e3edeb7356ea1115d532f23aa423d672cb2f74ed7fca6d. 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/ITB261500750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bae27adb310ab2b92495bf251eeb9a5dffe4502efcb420c215a45971c8c3161. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/ITB261400750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243c96fe6798d6d2ba63df4edc74209b696b2ff10d917875b642eacdd486d000. 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/IT5GH2400017.
Giocattoli (feat. Emis Killa & Clark P.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90ce73d7c1b82240f81949d08552d519fb3064edbb9b525ccaa7957453583a1. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITB261300330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9b3c3463a70d8c48f282b24ec4732b3f6b91616718c550861dcdb9c94c1e5f. 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/QZS7J2482168.
AH PERÒ SODA (Moreno, Clementino, Ada Reina) - TECHPRO RECORDS REMIX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d647a91706c02e257125099d6a36f534da91c08ebf986b4d47ff7301c2ceca. 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/IT5GH2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf325d9eeb36ac1d79276c84dfe0cda754a98b3936c0cbc71a4b92c7fa7be73ba. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITJQJ2400092.