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 0x38e39b7b73525617f23d745e1f286f80447aedb0283fd0be18394af76a364d9f. 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/7329e700-0d29-4cc9-9fda-38aba4661f12.json and https://artists.proofprofile.net/proofs/artist/7329e700-0d29-4cc9-9fda-38aba4661f12.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Medley Cumbia: Amarte Hasta la Muerte / Con la Misma Moneda / Cambio Mi Corazon
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 0xb7d558dcd9a4b45d5de2f6b6864c668b4d8753437a68c85b12bf2d6d4127cf22. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QMFMF2029094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cfd1460235b333b55709c56f6b0022265dfa5732b34471b751bd1c9b072acf. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QMDA72133422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e926e0cb9c6e273c1c3ba18a572e7bf688790f3e98ffc0361e1f1bf344da30. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QM4TW2279810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b4f1b900c29846be8e7db8bedea25c27156e8840b34dbf68f1996e366d7186. 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/QM4TW2279811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b6acc658386d70c32263c52df071766ff4e2dd57943c5335863326e3c78433. 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/QM4TW2279818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82530d5b145bd640c64ce368ff3990363e07dd0f82ca73acd8ca39c8cd53ca68. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QM4TW2279815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6413b841bb2cd07ead7c30f85fb0f80f7fa6645b76bf25109478ecf6b9cb9d34. 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/QM4TW2279819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d750d6aa57dc4c8cd3b47db39053b33324c661629c6c6c7f641980f0442ebb. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QM4TW2344834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e26ccbe2709aa34fdf4393d772553e962195c8d965faca7a3b407309ab889fe. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QM4TW2344903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464a65c65c8aab0cb43ba26d4c5892e11ef49357e4295d1f3617ccaf4b62d76e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QM6P42330805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1983fb5759c08cf9f2a50b070be5c2872058242fb33a57b8269cfd2b138ee56b. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QMBZ92330050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad10b1c24c6c27e4438064572256d2106e0ecfdab428f3ba6cb299e65b3d9e9b. 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/QMFME2384797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a6316607eb24b66e94998f1f67f93f90595f6e4758ad719ecb4fe83c9f450f. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QMFME2384798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6caa4c0caef99ddbbd0fae510a033c69b70b773a7b5d29242d213e3ae117937. 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/QMFME2384800.
Bellas Artes - 34 Años Despues - Homenaje a Juan Gabriel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a01d82823beb1e1b5b193118bac0bd0e190088dc33d9373c1b4c51539034a40. 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/QM4TX2518759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32f9b57e0400af1b59e315de62b0ca377df0844e76f78318999234e6b8f0b98. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM6MZ2599163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a2f45bf390cdee65e70792041af99a21253b5139310a0ea135641630de4cd6. 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/QM6MZ2599145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827d724aa20fb1d2d73b75bef69bae9f1580c939e258c4e70c25cbd762322200. 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/QMDA62519584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cffeeac1109ecb687040b074354d97183d296de9fbf8cdccf6fbb851b3595e9. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QMDA72564891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96dd1b1eeaac3472926fb59f3c48ea348a17e4f1026bd41ab68a48cd07614441. 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/QMFME2531781.