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 0x4a45e0e386199bf9a22d04bef0fa011f6e529af9c193a7e0eeb8fa74731a44d0. 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/ed3954ef-cd09-47cc-9154-17e4a5503cc1.json and https://artists.proofprofile.net/proofs/artist/ed3954ef-cd09-47cc-9154-17e4a5503cc1.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 0x1ba60d3faf49653913850bf87158cfd280d7b2d6a1b7bdd42739f65c3ff07ba7. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/ARTWQ1300327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fe292ce984852c61ac0deada3535dec142c19c1f099b1c528e525da92e81b0. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/ARF061601148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6599b128903e9288edd53b5f962fa1f2392aa85f7a40de3a7e2a7075d271df3. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/ARF061601151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc75ce4ebfde2d5b3e0fd6718e4bd624e6bb27dabcfb4bac9c8bdaa1883b15b. 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/ARF061601153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad2ca783979123f19d92aa42c892c6cbc776ca5da2eb9d6970054a960ead700. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/ARF061601156.
Enganchados (Porqué Te Tengo Que Olvidar/ Niña Bonita/ Mala/ Mala Adiós Para Salvar Tu Honor/ El Superman/ La Mal Agradecida/ Tormenta de Arena)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d059ec8d975321252953fbbf8982927a2aeceb478e73b03055641fd6d9157ee. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/ARF061601157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc3216b32140658cd487328d17f0fe567af98e9a4b649147ea8cb89127eaa0d. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/ARHXW2204418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c35a633c07c60d4ad860b8ff2a9f622c0ba33fa56db5e1d61e59d160a5b93ca. 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/ARHXW2300483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01b46e03954fc62233b8a74e5e4e6cdf57233a33988ef0d7e76465ebfbe2a48. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/ARHXW2302234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf349f74f5b761aee2409181e55310b9229225261aaa7da54373078fbd101488e. 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/ARHXW2302235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd236f22e3cc90a82b9422f923c750f445dd2e72487653ac6c755d103ee648b29. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ARHXW2302236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b8af8133db03802f7d7981a1f3edf338e1c760a4aee043f499215fa2e50e4e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ARHXW2302237.
Niña bonita / La mar agradecida / Amor robado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb5697f8e5b8883a8e3658b36ea6ed8ff475b2105f8a8561d2afd3c888b36b0. 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/ARHXW2302479.
Bailar pegados / Porque te tengo que olvidar / Adiós para salvar tu honor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea1acc98de02bbebd805471aae5e409f9bbcfe0aa7f1f65566cef49ae50cc61. 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/ARHXW2302480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ed28fbd2a9305527ab4584f3a21196cec92ed4dc109e5424da4ec1ec197c7f. 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/ARHXW2302987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb395b80950159867f8ff4cd5a7c82330dad19ae739cbdd67f16c8dd5f3ec49cd. 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/ARHXW2303221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207c5e985ea283aa9b5d39634582416dba954b76cfd8a8cdbe30b024b839a397. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/ARHXW2400735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099634c705284437427ee1a4bbf50056ee67ed8b518fe9fb691b940e7ef6c50c. 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/ARHXW2402010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b14846dd55b92cf2f92ef19c9dd98fb98ba5996f08f61621fd341335517d9f1. 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/ARHXW2302541.