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 0xb0c033d16110fed54cd99c63c3a4f8dbeb702cd3a826622925145b121c2df9ee. 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/fcf1787e-2b2d-4f49-9d0f-84af9bb32a33.json and https://artists.proofprofile.net/proofs/artist/fcf1787e-2b2d-4f49-9d0f-84af9bb32a33.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 0xa17d331ff04c3fd364fac176eeb8a27235ecfe3465633615af9e993876f7d0e2. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/ARG991022670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89be0143abb825b62b231d5f3cd3246e43d1a50f6b7547af1ec1945011b1858. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ARG991022671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277ca9b6f84fee21c878831bfe6c792e14ba3a36912fe4cf40aca6e63fe93de0. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:19:10Z), 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/ARG991022672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5c23a1992914a90e7d20e2dfaa95d621f203ba9d422becc7bdecda085ed18a. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/ARG991022673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1162629455bfb6bdb6faebea3ec7380b73673e5592b7a6aa4a2ee2da54a8591. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ARG991022674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ac848c159aba4233981c78fb2f48dd5228447953b614540d7e93789574167e. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/ARG991022675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee3b79a43cea1bf6998ba8ff5d52e941760d489ad35147a45a5bd0d5b843201. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ARG991022678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e2796bc26391804dbc343ec76181b37331b0d09129b631418e74f5924f4f64. 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/ARF061300419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90f220caa12199b1f1ba9c8f15583e349bcf29bfe4bc321244d62ef1ff8980c. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/ARF061300422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55154a2a227a67a4f4fc04a5b1f820a9169b9bdf0ff3d1884bf8e00ee516525b. 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/ARG991022632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9e25f5eea3c4ff9c0a87373fe0db98fbf0a32eaa5cdb722e56b83a9d614ea5. 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/ARG991022642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21016f07e59066bab7dc96b085c5d87b7e90860a15425adebff6629abf7e8011. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/ARG991022685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541a5f7bcb60c084b19f17e9b86de0c7b22fa9d6f3d5c09536c4a889b68f542d. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:53:32Z), 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/ARG991022683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504dcaf15dc423196e84a7a8c13f1d32ad94465c31dc6db4955559865c48ca9d. 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/ARG991022688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0635ee2675b4235a2e33a1be0307d08b3569bd83d79bedc82a5e99ccffb5a438. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ARTWQ1800100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e9e62594861a3ec60695610be27e0384585fa2d31bf6953aead89c111ed08e. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/ARTWQ1800102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f874b52e5256c7eb7d7d47128e07a17f3c41580d2d092417323dc0f4c0c1d02. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/ARTWQ1800108.
Cumbia Fest (El Enganchado Con Mas Power)
Cumbia Fest ( El Enganchado Con Mas Power )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515e1f208c71c5d7043fb08dd0f9f3b646079492d358c6dc8281b89c2dede672. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/ARVW52100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d59e1a9cbf49c6cee7ba431769420021c972e6f4d8b2111c2340038e59af83a. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/ARVW52100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc37b34f116c8df71fb117c207609d2918cebb9e0d58eaf7014d59dba92828e2. 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/ARG101103816.