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 0x807988208b59db5a10ff1d2a6b08413f7fbc1c37dac4f73d0ceba5fe18ad7ef2. 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/920bf807-9e8b-4cbd-8841-c775d80bacf3.json and https://artists.proofprofile.net/proofs/artist/920bf807-9e8b-4cbd-8841-c775d80bacf3.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 0xd80530c42c0cf356c5758e95293ce0854d698c213bd1b8bcd58fd11aab80be52. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/USHM80894706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0a844b1ff4e8b414aa5846f6c7ba7a2e37e8c8641a480122b1e6adfaf5eecc. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/USHM80894711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150702fc626f6f7c3163eafa95e04fca5b96858426d377faff9d166e099f0248. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/USHM80894713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71c575a43575ed31ab262a6e6472be11335ede700beef7e7e2815f1496454b9. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZS7J2437112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa021c219325a522325ba118584fe215a1543ec5aa8e92f4db66ac198ad30cb6. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/USL4Q0859412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e98fc3740042fb81234733f79745c5d6bd3c8687cbe82f5b6b7603517c8663. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USL4Q0859413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ca4208ce24424632342fa5c4596d689197954b2ec76a8e785be92b05c8e916. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), 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/US4E41021903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc828db8c6bcaebf53a1ba9ef345fd3518b51d5168be55be11553c58b3b0e3c. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/US4E41021904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5348766f83b75174f30b22b3bf100eff4c88ddd4f51470de1e58b1b8b9a6449. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US4E41021905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0befdc07dc89c44938357459dffcb231d338f90817f5f2d7a8b928e34282fc3. Chain 2 (Bitcoin): anchored in block 957674 (2026-07-12T07:50:41Z), 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/US4E41021907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4fba8b859a2682291adfa4a62907ee19645b7db98b4fc3f55d84ecc1284bbf. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/US4E41021908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe199492b43628c41b55b811aa1c5973bcbf2a43cdae2a144488c1fd2d530bc1e. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QZQAY2483664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cd840dfd5c193b42b9a87f4d047fa208dba88dc46fadb1d3f3cdb9eccfde9f. 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/GBDHC1225202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40ab99e9cac162f0733e83635e83df7a13ca04101414d72bbc136d0936d7d6a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBDHC1225203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508b839213606afd5f43cf3f5abf88f9134d0fa5461cf7ca20876117937be4b7. Chain 2 (Bitcoin): anchored in block 957688 (2026-07-12T09:52:21Z), 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/GBDHC1225206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8636583c0f101129965306708564d9960d505101392ccdd31d05119e8dc63fff. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBDHC1225207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cef6a67cb1f41ec67b41fb31572df6ee988e6354857558ec665aef5048e2ba. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/GBDHC1225210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd245a2a77a9c274542edd9169b9091b878c576bbde9b4a52e426e1d824091f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBDHC1429301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7362640c3a695643e76cb58c34024cfdbeaaf3a062637ae25c7883b6c87eb3a3. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), 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/GBDHC1429302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71499bc7d431ef163ab94c46edaa8b0fa55e26da80744efa55b125d4505968f. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/GBDHC1429307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd245a2a77a9c274542edd9169b9091b878c576bbde9b4a52e426e1d824091f. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/GBDHC1429301.
20 Miles to Juarez (feat. Elizabeth Cook)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7362640c3a695643e76cb58c34024cfdbeaaf3a062637ae25c7883b6c87eb3a3. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBDHC1429302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71499bc7d431ef163ab94c46edaa8b0fa55e26da80744efa55b125d4505968f. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/GBDHC1429307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6dc363d277b1fde73eafb4e9331e2d0ad7a2b1f6449393e296b3bbc59cbc0ca. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/GBDHC1530102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e0f01c3ea3270d1bb3416f65c78a698bd87ba1bf47e2c8a0e1764fd9c0b796. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/GBDHC1530103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cc79096fcfe5e5a0f8342c1d2c218b1cb4b42bbdbeff3eeee5a314b0b60d7e. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/GBDHC1530104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a25ba2be424ab524fbc34c90c7544bd5b91a65c2192074705af66cee974972. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBDHC1530105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3c070897d2f69998bcc1dcee3f57ccb97c84e738513b30961b74dccf68c146. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GBDHC1530112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835b75367577345eaab6a555e9ba80676ea161a1bf402ed6878b47b69b6b813f. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/GBDHC1731709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81e4591dad249bd35ee5762c92a88268176a3fcf042b5569a44a21932b181ec. 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/GBDHC1731710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2460c8e0b73c7573ac3b6fe7dec062d683826874994d26aada090c9c0d367ef9. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/USDY41732555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906164dbfca2dc57bc267f37fc8c3c039e5d715cb5a6984b3a2d43eb717563d6. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USDY41732557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11709f3a24daac80d5068f7ceaf6c81284bd8a1e50ed51d9fa3977c1b46d89f. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZS7J2369765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4723fc6c91bcf7811718cb821f28aab71fd7e076e11c706b70d4761e01753c. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZTLA2419459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e1026454c067f23d9f315da0f2dfc96d867858012691debc8b2ee49ebe1604. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QZQAY2465381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe199492b43628c41b55b811aa1c5973bcbf2a43cdae2a144488c1fd2d530bc1e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZQAY2483664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3424955fa9ddee1088115dc98eb322c6487221219c81c1f4c7a0f4be53a796. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTLA2489100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae278557f493f8c3f62b1abd6617b68d9936d0fb939f5314a5552cc2cb4637ad. 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/QZQAY2566868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93b7b0ddd62c141977532f3c3e6d742b81211a288d500c101a2b0f0ac045e4e. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZQAY2521476.