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 0x3cec331654a8ba56ff60e4534fa3f04e98ef2e5c3d864b6905e44c9def911562. 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/4eb96786-be45-42e8-a00d-24a4a152bc05.json and https://artists.proofprofile.net/proofs/artist/4eb96786-be45-42e8-a00d-24a4a152bc05.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 0xe74b1bef318e6615d18301731d68bb241a148d5bd87682a1eea2319cafb76f7a. 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/QZW9K2370398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5241ffaa4c2edc6468b6d75ee5bc6a7b690ce1880ad90d2bda1fcb1c9c69d93. 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/QZFYY2222883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd132551975236f465c0fbb9a5a618a339716aead57af2bb7c645863a36067452. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZ5AB2393971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7944679e011ab563cd132b6cf2744bf9fbb7e1261829d5b2949448619d0171c0. 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/US7VG2563944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcf52e8b4f7c6f537bda2afd4357274f69acb21726095b06857cf45b6546f18. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZNJY2452380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb36986e7272164897ff5bfa75dae477fd3ff67596a5ac784f9c02205b12e53. 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/QZNJZ2246531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffead674c646219d19b5255f748402b7bd984eb3c1b0102018687bcb713cc05. 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/QZHN42170989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb836cbd857ea2a3bfc035487796d6dc42766bba9b55943d64ca68dd0b7ec69. 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/QZNJX2566883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8bc725c04a448810e7729f996fc4a2992455a996464e640f578b4d5606dbd7c. 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/QZNJX2542550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f244c27b728c7ed31b87ee156120cab46ca372bc8489ece3157091a43987e1d. 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/QZNJW2544196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895c5ecc378e690aefd1990c656a2191f06df6af88ca7e7ada958195c14a501a. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QMBZ92518680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe791591fa3fa5a0de2621708cbc5e0b2619e3340785024a57deb7895936a281d. 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/QZMZ92529783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d73d0bf2d6f65809fbfa99647f7c4e72fdf98ab4acfb14e6d4ba6ecca868d57. 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/AR5UH2401986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cb0b25384075fcba9b6d9ed3e2af277bca628b2221a5f113bab4554cf69046. 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/QZW9M2450746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57e5f49e5cb172ea6c42fb2eb1be5b8b240d60398bb845ff4a8ef1fec867cc7. 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/QZW9L2419326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f24120f97df4db9eb7f7aed11c811ff5c66e1ffa9aee58007437984861be2f. 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/QZTPX2433317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0bc43dbdecfaeb826be36bcd1ecb875e39a30421086f58ba7f3b0e1dce4e31. 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/QZW9L2378863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cb275fb376df204020be0b718a59af1cec56c2a690c352d33329cc0310a559. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CLAA22300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08acc219ac606fa6b601d5ac414e8f86885eccd65232b7c7901f20dbcfdb0c0. 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/BK4DA2307013.
EL MANIAKO THE BOOST: LA ROCHA SESSION 04
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32b11736243e2a8f428240a8cd8d96ad57122476b0ba211ec194badb8a8c236. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZTPX2279416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f58efb50feb89be18c68150300454d405a72287a5e10e0f5a6e3e35492195d. 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/SE6MD2201201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf883821c501bec4b94e30641deea461e01301a84dec7e96927203b115471fd7f. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/QZHZ42240624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843b5f8f701b64dc9de8617bb74b39cff9ae15c9871cc29f2470011ee44f8893. 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/QZFZ72221564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb31136ead75caba99fa879f3cf2603a1f92dbec6fa2ae6cc52040eaa91ffb4d. 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/QZNWT2121049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eacf515ce043bb181c374aea084ba4dde14fd2cb47ce0725a881a47f3cf2603. 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/QZNJW2131278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7f6d4108ce9fd7af14f552acbd9f71753b5eda5c2605590239866083a4ff2d. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZW9K2391703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ef185c1232e5a9975ee73f525a39e61b5f1e3a4e26f03413d621cb5112d021. 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/QZNJW2291024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c1fafb2010652f2a218146d7ce1d3b0af4b236ac946cda7fa819246c96e9d4. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZW9L2211839.