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 0xce83a546abc46e09a8cf7119b7cb587102c6abd7a1af632791172e5c98674c10. 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/47a43e1e-6c51-4312-822b-1ea90433f1fe.json and https://artists.proofprofile.net/proofs/artist/47a43e1e-6c51-4312-822b-1ea90433f1fe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mi Corazon (with Vicente de Montpellier)
Somos Gitanos (with El Pana & Dany de Los Yakis)
No Me Amas (with Vicente de Montpellier)
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 0x16c9ed5ad851dcb1023b30d0681cd82d50a477549f5056bf86da76effd01bd4b. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/ESA012174218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176545c772286f9ed71ce9d08399f361e920b8db5d870013291556663bd1974e. 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/ESA011553000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814ba1cf7958aac05532abbf65d69050fdcb75769ab529c12c2392f2d0fcd6bb. 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/ESA011523330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06e79c5979969270054f24cef4d5018c9df0a629e98bb443dbd5a640293f577. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/PEZM92200638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6105b54deaaa669e961e2d7bb190898c4281d7e1ae3f37abbf8b00f6eef48c97. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/ESA092217866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37212e9df29aeeecefe3083cd51483e39b047ee2abd8c2c28013d2612dd87e0e. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ESA092218542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8929242ec4aa1f904cc2292f96bb731b4a18415e19271aeaafd20b979fa0b0d6. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/ESA092235243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4bfcefee34c30e721a7d0d9fc323db781457c792e71fc0e45ac87438ee43f9. 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/ESA092310637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667d910753a8cc83838f469d2cc8bf841cac657a40a435bda3b81c395dcd5cef. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ESA092317266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055da4401d020709ea8908bc783cb525f343cc9913cc3c00986e66df3fbfc6c5. 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/ES6172222238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c573fe6065571b5ec56ae54056fde56ac3e954c14766b518b36ad7fae725378. 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/ESA092236128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055da4401d020709ea8908bc783cb525f343cc9913cc3c00986e66df3fbfc6c5. 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/ES6172222238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d69eac654fd69440c8f0541958cb5e6fe50a1519d0e9297e9aa19f8415faff2. 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/ESA011535559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c9665f81503bfc7798f87b6ee130b75e7d2dc030e142ff24b70f2d06e42773. 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/ESA012239616.