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 0xdc936e4b20b3210b9e37d14b1e045795cba65e40e3dda910c1ec98d43ac5f0c3. 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/8f7a73d9-ff3c-4ce8-9b75-6d4d7efb0e0e.json and https://artists.proofprofile.net/proofs/artist/8f7a73d9-ff3c-4ce8-9b75-6d4d7efb0e0e.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 0x5848dd2dac5216d5ee8db710fd58c947aba2b059b908c67d6825704f9817b152. 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/USSM10501405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921bb435d931bf17cb80125dc8b08bea321f23193a630e32c6cf0967fd396593. 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/USSM10501406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a54f0573730d71e535fa04f32320db14604109458328334a67a0a6abf8732a1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USSM10501409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252a481a48d6c8adc9a7bc4f00f6c6cf79d749872cdcd25a1afc036fde9a1a73. 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/USSM10501403.
Stars and Boulevards - Live from the Grove
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0e71a17f4b974d766a45851920a2b56e04ea733e0359d518a12860dd30e43e. 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/USSM10601482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f99bc3d2202203c5ff18a466bdb9a242485c44d0210c8787392e64d594e2ff. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:17:53Z), 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/USSM10601483.
Live at Austin City Limits Music Festival 2007: Augustana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4cf57c7b736693b331a4ecc9132526dede833f8ab66b46ed92bac54b7db837. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:21:25Z), 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/USSM10800221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5695f8baf4661f46ecc5efbc2964887ed1cbcc5b5875df9861de92e36979407e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USSM10800222.
Sweet and Low (Live at Sweetwater Studios)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a3d9a122c9a78defbe921374dfc2a8dcb8c250d64f59745a24e78a782b8e57. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USSM11005564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d345ceaa3f958ef03c8e6c9deb390b50e639f9858ace866547adb46213d47c. 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/USSM11005565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2791864aaf8f867b37c8d2c86d0c034a2b3a10efe1bfeac51428d78bd3eb3a8. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:36:00Z), 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/USSM11005566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf6758ddea020b83892749b586d430393519705903541ea1cdf3b33b69ad389. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:09:50Z), 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/USSM11005567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e733cad1d63b494f50addf92cd763df977ca949bcab70c617a6ea4733e4c46c. 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/USSM11005086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cabc11d75a6e756edb3f00fb01b2d5e0ea8f9a63536e3893ab5037ff2f03b43. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/USSM11005568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0678d0d274dbe43a7e010fbb392560aff6b2a11b354d8e17c164a3ead7d48765. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USSM11101506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf6598508e68e62e7a560d8300ba1b3aa5bcf04d7473928d0bd6c464e91ffdf. 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/USRZR1449002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3475d898f24111a0545ca9cb810ec7ced3f5761ec67f19832a1a327b9c45cd. 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/USRZR1449003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e025e4100e51bd39aedfa3f97275c627a5873c2a53d0b70f4c261792fe50ef. 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/USRZR1449004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb538651f9e703b8f28a59fd15e477f44554aa1356ef379dd5b4f7e8faea1d8a7. 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/USRZR1449006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c588b83edf8cf70e23a32639eed1f50ad28d5293ad9696a17767e1606a838f. 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/USRZR1449007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32076751d9dff1f69ef74f1b516d1fbc59636bc4f650fcfc38fcdf18395442a0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USRZR1449009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d4337df191b691fbb1561b19bff4658d7b06812e1db2f87c5f802cdcb53258. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/USRZR1449010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193f272ae73c4b14e4cd2f266c42d7975df000799405176ae4079df127d75a45. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCACI1544746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d44af2cf817748ea3795bdb5f64cbabab6f3e8c4773ad2ca872c9acdf5d0cb. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCACI1544745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7890e6948bfa14fba85240f47f193252845580544949bf14878c6ad00fa539f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:43:29Z), 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/TCACI1544739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a6649472bbbf571dbd1e460161566ae080dd649adf8e19f8ff160aa188eea3. 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/TCAEJ1959032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8029e5df020d175e59e5bdfbdb6247fabcd95fa95ee627209786480b787254. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/TCAEJ1959094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4e790b3dde3666226bd3f639489d87c4d40b7be20aaccf3bac947051814049. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T15:56:28Z), 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/TCAFA2024751.
Yourself Yesterday: A Rarities Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c47168cdfd5e8a5de335fc4da1f515fa9791f28ac5f97cfabafaad01ce967d6. 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/QM24S2306517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c9eb1e2e46ccf1b4c9da9f6fb4742bf47ebe9af8ef07ba49df9d48468b2b81. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QM24S2304791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e87535bda8ce3a540bbfc98f496a23564022c8f1b1440fbb49e8f6b6ce51be4. 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/QM24S2401392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2608ae5a36c97ebed79b1613a6122d778f92f841ebca1217c710c6157f04d9c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM24S2401391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77634f12c6b13f7f8372e9f6032038d43e6d7075b47f3849fe57cea18d0d6231. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:52:01Z), 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/QM24S2401389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85511514f95286f203499749bf068857451c692de0842eb0e64f6bc2da0d458. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM24S2401388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf7810325eaa73087ecd3e18ba3c64b4532129c8e08fd59f20a9cc5b62b0497. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM24S2401387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d762088fa02850d26dcb193ebc7c8f993efbbd6acd86b5c6a27b1c599df821. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QM24S2401386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbff5caecbfff854b969c06ee6fe3bb4a3b8bfdbd69df35e9e6c5dfdc5a230c. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QM24S2401385.
Steal Your Heart (Live with String Quartet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4bfb0ffd9cd09bf59914857973ddb7cebc4550143c0b085de445e2d002a67e. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:07:05Z), 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/QM24S2407068.
Chamber Works (Live with String Quartet)
Nowhere Is A Place (Live with String Quartet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906744e9df30618834179947019ad9e400604902709c8bac50b28250b05001f1. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:55:37Z), 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/QM24S2500713.
Mayfield (20th Anniversary) (featuring Mat Kearney)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bd342339dfff399930405776817b40af641ef0e1fb53399ddc86ce6335fc79. 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/CAN112201155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252a481a48d6c8adc9a7bc4f00f6c6cf79d749872cdcd25a1afc036fde9a1a73. 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/USSM10501403.