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 0x8352669697d1baaa83703ed7a752d4443bab417efd1332c1c64ae3f9adb3614b. 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/643d19d9-1dfd-4844-973d-bdad4364685b.json and https://artists.proofprofile.net/proofs/artist/643d19d9-1dfd-4844-973d-bdad4364685b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Árbol (feat. Pablo Pino & Franco Luciani)
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 0xbab97c7b28526562ac80bfdc242dfb046d9b912a34d6bc5d60039a0ad29f0245. 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/SE5752015286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a88fc14dfbbecde5ef1c0e3d57586628addf62eec7097b22183aa6ca2193e7. 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/ARDXC2200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5abec944175e76f7e497253aa64b237e94f695230216dfe4d966a36ea963da. 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/ARDXC2200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa998398886616fb21540e25ed98f5b9dcc7ef4f4bdf25a90b754def6ca8c33. 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/ARDXC2200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a8fef22b346f6a226329f998bb0f6377603b59cf705a76803b920dd3913a0e. 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/ARDXC2200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4578ca1fa30fa6bc5fde491a71381baee58dee2fba9d19aa047cb0a4edd2d75. 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/ARDXC2200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba8e60f2971ac7271c1dc01ee9723edbebdf29b1dc9628af67259b604722ae2. 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/ARDXC2200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cfded95245aa79b26253808e3ee96a3d63ce746bd79dc916bc142f9be5df7f. 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/ARDXC2200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095fd3b4f5ad89fe1aaba012e1cfe90e32fe58f204553049b702f6e17b4e817e. 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/ARDXC2200049.
En blanco y negro Buenos Aires - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa654be247d3196151bededff938f8f0a11d95e6bbc8d192e07c556c7067c33eb. 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/ARDXC2200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf559d2dd7fec0b4cfe29faf3afc706b87f6219655b08095dde30c3581530ff. 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/ARDXC2200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9540564e94144496e856fb8afe5cef753bddabfb1756777c121c176da1ba4f4f. 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/ARDXC2200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a6aafb52dba172b3b2ec7162bf1d3b7a8a22a7f523a8636763f29426072dc5. 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/ARDXC2200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae0b7150e0e099425e8268a5b109c4f778d372f446ca8257d5eac1a94bb468e. 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/ARDXC2200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ff27938b0eb41ac4572dcffe47951f6eadd8f5486fd5b595e83fe21e9a51cc. 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/ARDXC2200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60c120f760ef6cf963a63fba0c6bdce8b84aa76d38d8e5f51a6be3a1e52aa6d. 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/ARDXC2200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2dd1303667e0e264be99308182310173561f38a2557687be1e6a06aad8109af. 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/ARDXC2200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b1971ba9902e3fbf817cf02ef46d6df3c9ee3fb30415f9ee48ea00216ed8a5. 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/ARDXC2200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73af10656adeb08dd75c3d80b680c4c46cc89d1db982bd789d75cfa829c5e443. 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/ARDXC2200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aef2d269c1104b9d7cace3f7dbeef66916dd90ab10468fe5053d71399c7dd3e. 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/ARDXC2200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3d502ba7729936449bc14df9eb5393c9dd78253273d32426347e1f1ac1f45e. 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/ARDXC2200061.