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 0xc4a0838c5f3bea236c95fdca131a28b18d0d772c85e88c7f282ddf1a655c4b7e. 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/18536893-3567-45fa-b7e0-3397030f8120.json and https://artists.proofprofile.net/proofs/artist/18536893-3567-45fa-b7e0-3397030f8120.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 0x6ec7a8343656a8b7575f4e93de724255d98411d948f687fbe1f8ca03bcebde06. 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/ARF841800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffdc8194e0f3aad6537239822048019120b1ea7b07755dc3a65b27c12fda103. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/ARF841800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc396a20578ff263d6f49bba6e526c02469d5af34e2f0f842eca93cbfd85adbd3. 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/ARF841800071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6125182d7062091c9dcb630fc510e25b80fdfe193a9ee817b2a3bfc2df1424c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:37:10Z), 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/ARF841800073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5caf3f88fdea0de2c5c69f5c00bb2e15c3d64449fce45e8f98e0ae1e2ed199a3. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/ARF841800072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf741048decaec1348893c9f4bde92b667e6542081420d92444f492b0c6860bc. 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/ARF841900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05ca8c22f0d1eb59cce333ce71883a7444f301484c21326ba14c67a58f9cfa0. 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/ARF841900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a9d4ed2702c94fb6bb9aa51e7b6d6be19bffadaf40c749aab30639dce242fa. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:46:10Z), 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/ARF841900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d62e44340047736923d652dcfa0734e0eac3e89887183f582a7e3029430c35. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:03:21Z), 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/ARF841900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6b8b07941e72f65a079380f4a5d2fc7e7db8e2af5dbe2eed3d38d6e09794aa. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/ARF842000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1fb80ee8eefd31b13400379013e135f950ca3b6d389aeaf1b04983a97cd9be. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:56:20Z), 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/ARF842000037.
Tributo a Pastor López: Cariñito Sin Mi / Lloro Mi Corazón / Las Caleñas / Tienes Que Regresar / El Reo / Oye Traicionera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea6077dcec1de0f2b659d62f71e443f410e24a264c4a0560678bca7fce0bfa5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ARF842200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033b52a5c3d0aa93d5587078c5c11443083e7917ea3d2f2fa33f733639953603. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ARF842200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfded79d504ded6742bc6fe239568f79cc7a06a04be62b87e8a48d437e4b1d208. 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/ARAE52300159.
Amiga Mía / Te Aprovechas / Yo Sin Tu Amor (Bloque Colombiano)
Amiga Mía / Te Aprovechas / Yo Sin Tu Amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb049e3e32873125a099a19c04a0765d61674da00ae0f746d14398c8d48cf4f. 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/ARAE52300230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f659a32725faf3245b10c97c138768eee1919da39816acc8f34ad7242eb43e4. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/ARAE52300265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c215750044d2d6036c46194909d70df7fc58d94e62ce8f562bcbbc956084ce0. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/ARAE52400078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe261cf862f223a237e08567db37607cd7f6acee85eab02f691068ec26c04b0f4. 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/AREA12300788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24a7e2742b94f1f6f9795d851ee4353bacceeaa46b0a72a863d14aac6bfb9b9. 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/ARF841800096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b8673edf0206a21668e2e27b77f110f3aaf1ee316e4ae740b13e5ce0436c19. 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/ARF841800108.