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 0x242c6fe7e90812eaf5ef25a13681d1ab45984ee87f8bd2a1db775072e08591cf. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5ec89b8-c77c-46e1-be70-6e655f21f4da.json and https://artists.proofprofile.net/proofs/artist/a5ec89b8-c77c-46e1-be70-6e655f21f4da.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 0xbeac87cc0716a780101c6ea866f95753f050324077d65df811e3e3cdc7138518. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/QZWFV2482546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee9550cd284cdec0b2f17151fb0be39489fc36f5bb6fb889c1791146ff2ee9f. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZWFV2497079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0b1d64ed19cc76eb124a17080e8c8fd6e2dacfb00e0a587b8b0133ad5e894a. 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/QZZ792451390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31df17b42f90b1e502b8f1082f49d3f70d61e2def0d24490223985d0961f865c. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZZ782472374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7072b2ae508aa2cf2a472cf099d17b91724620dd865ea2908ebe90ada99d2965. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZZ7W2407379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995a015c62e00ee5bb477a51c1416dde85d0566fad13d6e58218cf47b2396e08. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZZ7W2409208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2209ad65d0bd88634743a56f70854eb2df35fd0d51874b975919774731c76095. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZZ7W2407367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf78d1ff3312de4bb0c896fe3a3d3c00410945863d6f475392088008689782d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZK6J2508144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8ac727da493580c1bfead2e4db46f7086d4d4fb176cce347f4b516ce3acbff. 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/QZNWR2550189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3202a51bd0ef2f5d479cd4154c5c192b3617609f6242f364e78e88a2b7066934. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/QZNWR2550190.
Sábado noche (Dj Aquana Remix Tropical Mix)
Sábado noche - Dj Aquana Remix Tropical Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dee9fa22079b7675d3f235003a882cb342ce633964564695b93709e1aab1f47. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTBE2532726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7675232bd0db49f6ac4e7fc881d0a9d5d49b4c73aa012b897452c48f1a41b786. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/QZTB42593255.