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 0xbd4fb4f1979410e93b30c0631105184ad89978f92c634673e37675046854e75a. 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/60df6a3a-21ce-4a5e-9861-0591b8d2d7e6.json and https://artists.proofprofile.net/proofs/artist/60df6a3a-21ce-4a5e-9861-0591b8d2d7e6.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 0xb0c38d157f77ec75bf01052ddcfa4f97898de43de5c31b63fc69a19eecb4be5c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES8242030303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf371943c4031758b63df4cd77ccdf1d3e477f49761c6babbfbb1686aa704ecad. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES8242030305.
¡Aqui es Donde los Vamos a Detener! Masterizado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762cfecf1661c2da9924776e4a2bff8621d577aa21bf910c582f494aa939b07f. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZFZ32064722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d30927b5512b533a5632c70c22313287f4aaa5760d350d7623354cb79f3b46b. 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/QZFZ32064724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c2b9aabbf62df29da4b8c5dea7c210e0acda0806b05cf77b1fe2e9636cbabf. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/MX4971508528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a250a4e5950d5e080235b27346d59c353f0d8a879d4010bccf832c7bc9b0cb. 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/MX4971508507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071d927042d35bece92bdb71d98830428f0d13fe569bad0665c04447b8fa686e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/MX4971508568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68912258456d7ec77e800aaa2f150349c8de57fd045b2f6acd785179ccb983d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/MX4971508580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19f5f64a0a73698f3da3f8b1e1cf64a584eaf74f36388e8b30c041482845101. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/MX4971526628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d784d05464d3e06f03db9e0d6c92fbacb0dec83f0a1b6ffae616fddfe7c780. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/MX4971526629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236f6538d14aa1d1d88e1833672a344df3a1014136565db4db47388da66e124a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/MX4971526635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9407ed52790bf365a1a6f6a1db8ec592c566426370a9a16700306e8f9b3b5a79. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/MX4971537457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0ea6f3750ba946039f6a985a4639e77f8106c7ef878e0d92c524fecda3f553. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/MX4971537461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc245f709075bc97be26cf3227d8589a84136f1a392652cd75ffaeeacce966dae. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/MX4971537464.
Del Fuego al Aceite (En Directo Teatro de la Ciudad Hermosillo, Sonora 08/03/12)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136b47eb593ecfabc4c4ea5a61cea0af593778add67a82e6e59211b54405d529. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USCGH2335665.