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 0x9ff61dbe0baf6438a01cb1b768bcfe680d7c22b82742dbe7364ca59109e76866. 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/6e6f2550-3594-404e-baad-104f513ab5c2.json and https://artists.proofprofile.net/proofs/artist/6e6f2550-3594-404e-baad-104f513ab5c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Josicúa (feat. La Pantera, Maikel Delacalle, Juseph, Shoda Monkas) - Remix
Josicúa (feat. La Pantera, Maikel Delacalle, Juseph, Shoda Monkas) [Remix]
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 0x6f197e9cc1efbb676af7e89111c7157e70bd050aa956db9028d8364f775b7b04. 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/ES5152200759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4215e472ce548ec260f7ed7a3b2097bb21ee45f00faa27a1ae3948741ccea6b5. 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/QM4TX2090060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea526004a189d9bb7299beb58a0c87f571a4823c6c0ea2bceeba773cbdb724d. 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/ES71G1939049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f7f7a0042b22889520c73d5180525e2fa5e2915871bf7866dc20042e2eb214. 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/ES5022202806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959a3116e660c4472f2fa04cf584659ffc5b37e69617af87b64aa2030e3b4309. 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/USA2P2124778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76560815232f813a1666da88c51045a0abc014679de93852e1e6798a6bb8f21. 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/ES5022100597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b3988988fb6e343b36d99153e7486309907aa4dca63562e39d157e244db884. 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/BK4DA2322049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22234812e960061e65766d6341f951eeffc4bf5a9e048cf3c5dee770eae338c1. 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/ES5022401831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5abe97bd4f7615e8a9c4290e54beb94cf58de2af0d78c327243b0140907f6f. 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/ES5022401013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19dd3352706b7fa0322c2d435586d936f9ee711889461a745db093fa03e52686. 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/ES5022400162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd246fe4da68370a301c407b0c431f05da36de964425aeb5aa1f8b5ef656be73. 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/ES5022302873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c8658a0b5a05e4588589560524ccac0d4670745f42a24a648a2b52764af21a. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/BK4DA2320723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c8658a0b5a05e4588589560524ccac0d4670745f42a24a648a2b52764af21a. 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/BK4DA2320723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395a480f4180b0ec7421fe209b9d20283422111924e78ac8454a5279719c26ec. 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/ES5022302521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2fe64c9010c2b703113f125237681f37739b342f944a8f4b4e89f9fbd10d9b. 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/ARF102300341.