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 0x35d43e68abb504208157f6137da6fba8fe0cfbd67d22d64f045269b7887a7e66. 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/432126a4-bc76-41cf-a131-98989f841bc8.json and https://artists.proofprofile.net/proofs/artist/432126a4-bc76-41cf-a131-98989f841bc8.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 0x4338ba93fd01b78ac96e7dd82f25aa4c72fe18c05450a9e15d5315cdb96950f5. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/ARHXW2400539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17894b2477d6cd5235e42b6aa0aa754fa8e8a29c49edbfd55710511bc5d711f0. 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/QZTPX2314521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a673afe69d472f3d5f3bbde4fed57122f69a40815722c9873e194ebb584c49. 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/ARHLR2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4338ba93fd01b78ac96e7dd82f25aa4c72fe18c05450a9e15d5315cdb96950f5. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/ARHXW2400539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18883e7efded8e07e5f73f028ed54f5c37e19e1ed1d70076e718e3e6ac97316. 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/QZTPX2334506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44fa60b24d0754a09750da0e55bf0d386f79ef61342763d04390ae83a9f56e5. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/QZTPX2337783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a70751b9857321d0996e7174434934dcf48ca484c133360f1b0b18b7342da2. 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/ARA491900053.
Donde Quiera Que Van (feat. Lula Bertoldi, Ivonne Guzmán, Nadia Larcher & Ana Prada)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08485ba85e95787be2e948bdf689261f6fc1c3097f4929893bb522a9317365a. 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/ARF102300375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08485ba85e95787be2e948bdf689261f6fc1c3097f4929893bb522a9317365a. 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/ARF102300375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb678efd66b3bb6666dc777186f691e3b4c45747fa7df1e844b312c3511026d64. 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/ARM6N2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d7b793285051067cb184dd24f21a43d283ae7ba1f3ff163c8047f14712c02a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ARF102200162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983f4a15e5cf5cd91aec6e5388f2707a6b696ea2ec011c89d2ef825ef3efbd24. 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/QMBZ92318352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d03773562e99f06d0f6c9f1780c8ff7d0294101f229cbf7494168d3be18bc6a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZGLM2317563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4083ac897c6cf171d1b67b057be4408efbf1b03add734f85c97a85d6cf3d29d0. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZHZ51977264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52d12dd5f3d7d3218cf008d8051a5fe0a769c4e2f3ab12402aa6fb62d75da9a. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ARG602300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52d12dd5f3d7d3218cf008d8051a5fe0a769c4e2f3ab12402aa6fb62d75da9a. 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/ARG602300078.