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 0xff76f56c5ae00800a083761e372b6afd0a1e9543c6e746dd7df82feefff515d6. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a42fbcf5-5175-438c-a88a-8f7517a66e13.json and https://artists.proofprofile.net/proofs/artist/a42fbcf5-5175-438c-a88a-8f7517a66e13.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 0xf8682fee820b7f6dcf5c15cbbfcaa4aab9957edd62e67dd35edd318220049f68. 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/QMBZ91309443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493b11ae1a2cfdd080d8d90b1b5c92c5e415f991d867794c6520892d04ebc8a3. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QMBZ91309445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cc28ad579a9da44102a9d9489402b2bd425dea7b669545520c520636aab4e4. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QMBZ91309446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090b2a17fc7a145e4b81f4146d9f44a309225889b81b61148e3e29904c8885c9. 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/QMBZ91309447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624906a865ebc564b802d9ce7afdb442d3660984acdc378ca869f908b7716adc. 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/QMBZ91309448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928641adc476a5478aa24e780b5e775bb0e682c88879f294adf6e62f6eb920de. 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/QM6DC1674056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2efc08b5f482563bf8022ae7a7fbac5dfadeb4db5197721b2439194b36a87a. 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/MXF170910527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde5353ed1e771ba1be9f7478e3ea90612c49ccedd946dde6c833a261781a5c5. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/MXF170910536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633946067f384e77306fc21a84531ba466254de05b392ecf0a11c0cfa9fb6d67. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USDXS2008347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e72a49d0f2a93636247b37782327999aa0e82f934cddfd63c0c75f34779691. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/USDXS2008352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b73d20a201136d4d4742ba321e5eee5a15ff8bc780a766ba14d9236376a174. 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/USDXS2008356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa574de7068072fbdca386a205eecbfebfb4471eed10b237963b59aa234aaeff3. 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/USDXS2008355.
Los Rancheritos Del Topochico Vs Los Gorriones De Topochico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5fa149aa30b52e0e61781a93cd5b0524ecc53b3bef290e3211c2c4c1827b38. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FRX991547959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f24823e933d429dee277f8114567ab684ace305159b12b53216715c8ae6b05. 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/FRX991547960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7256c50767125c9a3455df895ac2a4eeeeffb6dc5e0a08faeec0f44a663fa092. 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/FRX991547961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b189f6c7cf300b43e0504ea15e6dc8dbfd6e64b9e8991b92615e9168203cbc0. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/FRX991547963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354088934b4b8c0da48adbe8200fb77951de25666fd58bd54ea87e82323d5487. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FR2X41545897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2097dfd9e75c14c58d687ed73e59ea58baa9186368fc90ddb87b382296e8e3. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/FR2X41539133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4d56430fef582f5edeaba464b3595079a75e1927ce215fb4b9109c9ea2f44a. 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/FR2X41539140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5984db650184f56057ae1b178df6cfe3fd75d27a154f2f0a68bf1a5b9886b5fe. 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/FR2X41539141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbe17434f4f9de8f1fac00adb7e99a9f0550ecc7485dcd606dd8172cd4bca55. 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/FR2X41539145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5105b0ef6a1d0e99454cc4d20fc393615544f08183451d24acde33eca23f8b39. 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/FR2X41566986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24cfeaf26b81bbbad14ffcb169848e3392a820b96cb668bc1627bed7b74be01. 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/FR2X41566988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd322acba240e363e47cbdfeccaec846cdaa735f6eef9cd93f21fa960ec5d83d0. 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/FR2X41566990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05ca5257c88a66b40d01aa1bf747e661df252214e988399f4ed6e656a31ca16. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/FR2X41566994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11075d5b51a2ab8e12018280db4de9d0cc4560a18fa500ffbf64c773eb177ac3. 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/MXD781904984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41ad3ee913b86743b1835d19ffcac631fb2d42cd2cfd4d01b5f49f4de3185c6. 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/MXD781904983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbe4fa29246b424d111020530073c3ff91ce299853529d044ab40ab3cd0c477. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZDQH2385598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dfd51a931379a4b541f2dab7d5307cccde43c92bdee67787df2f1f46a8e11b. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QZDQH2385600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abe678ab92aa42fda6ad096a7a25e1c350b99456ccd3053f444f9a28d166664. 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/QZDQH2385601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ce5f7c39271b1ea3c515ffb028817a9dd8d03a810994797ed350be2122b91d. 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/QZDQH2385602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8ac110706de2010e6bd556b9204f6697639b65e6be100d578efbee28d7b6a8. 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/QZDQH2385603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5dcd056cdaabc971a0e46fe49dd60af8889b7d8466b54522d113f4e4889b20c. 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/QZDQH2385606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72ab6c8b3a0ed6da1e451f4886271c98ae5039098e9f3bf30989ba8c4720506. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/US4XG0409294.