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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf856345e4aec546ef942286ee4cfd1acbb19f883e9e74701fde1859c97b83338. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a4bfc861-fcb3-4bbf-9128-2e275bfb58d9.json and https://artists.proofprofile.net/proofs/artist/a4bfc861-fcb3-4bbf-9128-2e275bfb58d9.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42316381b8d48331dcea98e7eaaddbf6b97101622c094ff1e7832132acaa4092. 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/TCAEC1980407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b63f92a554e83aee47d7d9b016b02038f90ab19c84ceb1c2d466481d2782529. 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/TCAEC1980462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96834271898744e43669d17c14abff5ff364a806fdf95bed3e9183be40e8a25c. 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/TCAEC1980464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f3975606dc88929d1407545ca83e2fb349a3fbfd82e2f91877450405a6dc5c. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/TCAEC1980386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d575948ac2680d44a26ce731a55956093ef0a600f63fe28e131e47fdda87082. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TCAEC1980400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01991e47a9a42a0300c544b11219dd9fc1859d6a33787a87a789f06be4b1ecd9. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/TCAEC1980429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccf8ba6dfd30107c7c601ed9669e07e1bdb1a7edfa3e72cc759a286aeb13c9a. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/TCAEC1980433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769493672b87b1564b57ef4a96b70a3d6a292a97237fe49d9cbffb1b8fa9fecc. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TCAEC1980442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ecf0f2c08de7a1b4310d741ee380fd77e17219f31a429e25df294d527955cc. 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/TCADY1858458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbbdf9dcc2895bdbd5536e713ee62ddd99c2ce9d3d753cc4a5d50dd3c38b8da. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCADY1858462.
La Enorme Distancia y Mejor Me Voy ( En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf6a770e5169c4ff1c65b70f70752cd8c67e4f46d4279b8f7d5ce4dba17ee66. 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/TCADY1858465.
Entre Pancho y Pancho y los Plebes Atrevidos (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6614cb05a89a2dd0216c1c5b1fc5257e5c19222886f6ee757fd316a883229853. 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/TCADY1858489.
Asi Me Gusta Andar o Repartiendo Dulces (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b42f82deee66f002d107c4ebb60841618be1547b57f902e7c4393900120d045. 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/TCADY1858504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45a088d053703638acfe0a2554f5c0b730e40b8752543198a64cb4ca8a6ce61. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCADY1858512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650c547f93df5c170ecadd8721a2d16e54029d132b4f1bb1ab95a3694da26df4. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/TCADY1858467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3d74124d5cd3b82ce4e94619e30db7174e05e7549819545c1988de0eaf1051. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/TCADY1858495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1315d76bb8b76b45bcc75ab5faa932a4fc5b93f7cbdcbebfb3901f588d9c0b1f. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TCADY1858503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685629b920c7bb1cd94c85f1d7483ce825b201fb232fa7088064afe43fb189eb. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/TCADY1858508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c22811a7468a1a31525fc3c6361f07b5531e7745788994c282cbae602f1e2b. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/TCADY1858510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf0ff23fc5fa8b0a3c1654bba8b9a661d4ff9d8c2fa471e28d9bbf68031fef1. 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/US39K1800401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d10619ac23d7706a5124856b7d96e7595e8487659857d72d804bed75228ae3. 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/US39K1800403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb526aa83a292e0b43485131dffb07cafb6eec172a78953834d39d7d407625398. 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/US39K1800406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b2613c2c88ce489a0502677ef8f3ce5e00d6e311909fb293b660def7f63415. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US39K1800408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e19d9ba51d72e2c76390f28a1c52e0a79653c5e26a9154cf2b42fd23c67bcd. 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/US39K1800410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced77725895dfcdbe7a787f2d25c9e1b2f62af941db93d51251a648184883ac0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US39K1800412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb05cfa1a711f9b955a75f62dfccfd9da1488e7f96adcc47e105e7606a1b428d. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/US39K1800402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1442a62286f6caec85125e8068b03763df3f5b7ed1a846f63a0021be19fd4d. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/US39K1800404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3391a7bbcb648ba8ce1776d47beb98eeb501a29252570b928c2337dc42b83c4. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/US39K1700601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c165b57ad8bc7761dcc273ec8a994f2c47675316e51ba3666cbe66f22cc41aa. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/US39K1800407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3330720d8f1e6da4af4aff7a3b887993aad678d292530802e8e5d28e4d5fdf4f. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/US39K1800409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb425b858efba8ba9f77a89d115bc8b919dd3e3f19f72448732c87ec9bd5684f7. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/US39K1800411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200cdd8091c7bb238620f142605418d2a616828373f14bfe4526c242c278c4ae. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:41:25Z), 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/TCAEO1971192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858487b50a888ca20d081b8ea755fe4c9bb10531b7db5d118b8128a526a0a510. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCADU1875815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26d74131a2430d4f667660aa737d701640eaf50a4239c26e0052a07f3607681. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCADU1832086.