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 0x8d04e3060ac44a97755747fa8fc775920ddf4a02893db7f8690b342799a182cd. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c617c98-ef1a-4763-950a-71e3145bccbf.json and https://artists.proofprofile.net/proofs/artist/2c617c98-ef1a-4763-950a-71e3145bccbf.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 0xfe67e568e11e42cb38a5f71d893aa3fe11652690c8342cb188a4005170b4c08f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA2P2108233.
Sigue Girando La Rueda (feat. Grupo Primitivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a70204d703ee7dba90cd1901c64087469293b5ed015628303ca95131068653. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA2P2332573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c780187dc6fa50c5822f9b225d693373dd1d7178a46b7af71ea5be7f29abe1. 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/USA2P2116956.
Recordando Al JP (feat. Los Chavalos De La Perla)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9398eccefabe16b20f8b1c87fcae13b2d42889197ee10cac43157f3c01506f30. 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/USA2P2108243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5432837f5b680159533dee54bc76a193002977e92dd0a900465c9c73f7632845. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USA2P2423060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9b2fccd83b4f159dfb7df359cbb933f8f2af145e34d4f6fc70aa8dd483974f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA2P2346602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec840fb3cae6eacfaa86bec6bfaace348a325f49aafb8e3983c67fcdc2c22fd. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USA2P2313459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0228afadd9dfcc6bb769d1824c174df87b74172a9afe6881b2ecb47eaa5b3426. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USA2P2313470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9a9c9ca3622169f5ab7dd54e5d6e24ad460062b42595423be3479b94e129d5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA2P2250128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea6c2ab35ad03f2c375e4b4248841e75b487a39c02794310d63b6af49a9a6d8. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USA2P2250130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559208c410cff1850d9020a65b579a22ab0e9f95f0da36d745c131fa8096d06f. 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/USA2P2205822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31968623d48d7e1960eae5cc8c0d573c1e5808fbb8b8aae8f6ea5266b3835730. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USA2P2149787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7da867e54a12ec0b35f1cb017d678ef0bd29ee2b760c5cae6f8b35b69bb2969. 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/BK4DA2511910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16c29f1e762a9a61aa0035ee0ac7f0afbd6164ca05d1c25eb2e003f65fa22a7. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZDQH2445257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedb6c5a691aebe05299273a882178823a8357c846f8d40a42ee5fb8ad60179f. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BK4DA2424923.