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 0x3966a206a3d34a5b543d3675905455fdf05b70018e0934d71ede8c56bf4a81af. 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/1d2b7734-3364-46c0-8576-072eac842738.json and https://artists.proofprofile.net/proofs/artist/1d2b7734-3364-46c0-8576-072eac842738.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 0x48e7931f282127a8bdb7f0372b16d1033aacc713d3cd3bf8d3dcc508cccdb284. 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/USWB10100731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0ea4024270291e8a35a7cb33464debc8b8edc3ea029ed720458229e724ab89. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USWB10100734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51d1d50211efd4c3acd66f83ce5a112e0a079034ab75efa757fb89b72f93652. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/USWB10100737.
Summer Breeze / East Of Ginger Trees [Digital 45]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61301677f5be746c1a6815ac09c6a7a8447637b278cda4a2d2549a1b765e2178. 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/USWB10403413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ac600db7c2d49c40fa447a97b02842bb2a9f3010fd799f16606bfb85d88db9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USWB10403414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29adfee10633d145784080a426048768fcb713102388f216d6649b6d1c1c040. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USWB10403415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b8b1d4ae1566f1d0b8da22efc4d94647b8d7874c687b434acb71f65be86ef7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USWB10403417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb987659c65a25abeb45fd4d74f8046a25a6957909ba08a2085ada862c8a0529. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USWB10403418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1bc0bf1106014dce49206f43d3b73cd6bb13b38bb3c53024a59406f1b754b7. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USWB10403419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad9f3609503838e2cf9cd0fe7007c0ff485b1478181cfc2930c8f59c3eff4f4. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:33:35Z), 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/USWB10702776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c32042f126084d377295a886acd3885fa6e8b329192a1376810476c06ea5b3. 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/USWB10702777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3703364b9d4f45a2a6dbface21be2897971410fb18fd0281c1d560cb7d3438ab. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:36:51Z), 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/USWB10702778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479cbaa23c606f127ed1b9650a1f4238a15201e8869cfe4f31affc8d2926a6ad. 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/USWB10702782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1783f73f4f3516277d57e263de2e532696e3ba7e3f355675a7278fdbec2f4198. 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/USWB10807096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528020ce82ff4d86bf4540d17b5977079a156d436303306233f481e2719850fb. 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/USWB10807097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543cb8b3bda21482d5e2b886922f1c049ab1216c488718bd91d7f54b60f4c3d9. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USWB10702789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0838253ad9521edd4ea0be648b3f6512c234d4dd0137054f6deb4eee82f217c0. 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/USWB10100561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b0a7c944a2194224e1e1dfcde2a13845fce70ae37bcdbe240c35c4c37a75f1. 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/USWB10100562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3860e2c3814ada075fb2f2b01cbd6ea5099271606abef504763eef343fa1ddd. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/USWB10100563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8267e470bcd6bca303e2e61fb86566254e7dcc2d4a18e5684177b196f047ad9. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/USWB10100564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5092ca09c4caaa8bd30ca7b4ee16d416f7264912170e5126eae403c19a12bb5c. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USWB10702810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba743274ae281aa413aec815429c745f07908fe1878ae25621ffa33602b7c38. Chain 2 (Bitcoin): anchored in block 958678 (2026-07-19T05:59:57Z), 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/USWB10702812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b03d5afaaa4b20af801545de365406bfb76a53d48b3a050e2066822625a995. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:54:15Z), 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/USWB10702813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc6c57358176d0a3c4d593bb86d669fdbccb97a4a69d2ecf3c645185107f356. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USWB10702814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f5bc81a40e919a90239ce8bda99f816d3060961720057d8ce9e519ab0cf56e. 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/USWB10702816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe016dbace9baf478395650c2ecb2b6386c5fc2cbdb75b8c5620d8e02ff2e5b15. 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/USWB10702821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5a2185eb3491785a898f7bb1a98969ed372f163915bb998dabe4ec3cd950e1. 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/USWB10702735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa971c8e6ac2a22acb6445b6955c34562722989c1481c7edd29284376d247352c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USWB10702736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43feee0190908cf9e1f6959ecb57410784ad16cb40ab9585396efda885dbd37. 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/USWB10702737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f5b14b153d0a99329b607da0d225b8c5b12816559ce3f294d3170a89e56fc7. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/USWB10702799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87cd6698d131d24ceca8fa208bcec0030abdc15ba4f22f243836c8857c1efe4. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:55:05Z), 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/USWB10702800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1913ab42b42d4ef5c07cabb2a3a7baf4f5a60a62725c281064edf80052471b7. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:53:43Z), 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/USWB10702803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de90dfb4b605e0d93dc54b11a333bce2ddba5a403a9e4a5eef222f039b7e224. 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/QZES72571791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ad67c664fdeb3044190522795b3fb7e4f894111dd36af23c8521d455d1e270. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USHM20498026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e399855e6c5faf5efcce855e4410c309d6d365eae6a851bc800e67653d4fae. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:56:40Z), 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/USHM20498029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0911ccd3b9de1547499dd19b72566a28f83279ae6ea4d204bc6f77a9bc61732a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USHM20498032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84215f51f284a458c6b1dbaf18247b08b5d0c7e69830be4e5caf765e35f976b2. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:40:30Z), 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/USHM20498034.
My Fair Share (Love Theme from "One On One")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf932255870d8b89a70ccb2b9ec0a06e2ff17f07df3ef54c93d30de52e749e9bf. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USWB10807098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4f49ce38a8fb50314669df9956df6f1d0475dd7e10c33636053bb3f8b83359. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:03:13Z), 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/USWB19901642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b234bb3e797cbb74119f769ab55e3fb1bef930f86d5f67cc822982732498988. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:04:53Z), 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/USWB19901644.
California Harmony (Ontario, CA, LIVE '74)
Sweet Days of Summer (Live, Carnegie Hall '73)
Ontario Motor Speedway, California, April '74
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0641e8e32d3ecb7d87f72f8c9ad03e13f76e5c9795c6156563793bcc607fbc60. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GXB5K2500011.