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 0x6dea4f90bb0b7c33a6e6c0a4a442c06965c2c93ff5eb1f19a978a25d6cf8028d. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa2efda4-7f6b-4f75-ba59-288d02a45154.json and https://artists.proofprofile.net/proofs/artist/fa2efda4-7f6b-4f75-ba59-288d02a45154.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 0x129b26636c03ab603d84375147dc36153b6f7ce2ef9128812f526a68e6d3d250. 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/USHM81571685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb851b4936c29aabc7a92cd53069aa2478ada240d5cb461d83fc3534377ea008. 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/USHM81571686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa897d12b2409d504572ea1ebd226505e36fa875e43735fcb64dd2a51793a98ad. 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/USHM81571687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b8ff74ef2ab069a3d98cf9bc261b5c6fc2c9bd67de8cad12fab6c09b2ab54d. 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/USHM81571688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991bf46c33d2b3843fa85927ea7ea333f2a97fbb7630c84f502df4f55d516e8d. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USHM81571689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f88f09d41f38762abf7aab6dfbb4337e474eb2cf91d624ad177519fdc3b19f5. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USHM81571690.
If I Ever Fall in Love With a Honky Tonk Girl
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff3e51bb511aa079cd6b98903a65ce9b2780a7f47a73b9bb487e50355bab3e8. 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/USHM81571692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8ca9dc16fbba0358a6cea88a9f8b5b2fecb89b9f42fadcbfd487c8e220bed9. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USHM81571694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc270dca91f3d99a8f00522080e166a16a092d7bd21638fcb8b0a9b2b11256f. 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/USHM81571695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054d8a5a5f357ae901d8ce2b94270d87a7345b84d5095b311436cf7001660fbb. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USHM81571696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac791cad344afd066491c476d6e01397e949d1a3e70bfe9c0d7dae951ed88b28. 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/USHM91247719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4692fb7eb41d8190e8b287ace92ad408f0ea420e8c2adb1d836e48ca507e26a6. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USHM91247720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1939cf224769ea66c7ab94634ca1f7788972376ca8a36eadcfc13c3edc20fce4. 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/USHM91247721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c51389edec73b35a11c6d8675daa2a6030cf1ef964371016ec061171856e97. 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/USHM91247722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d70c727531e77f343daab3c8a69e0ca80ae72c7d3b9b0bc22954dbbf801419. 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/USHM91247723.
Pick Me Up On Your Way Down With Justin Trevino (feat. Justin Trevino)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc37ecfba4921f5affe115914e9d3ac89cb9543d2b1a66877c8f9a5087e4e35f. 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/USHM91247724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae2f5571748b928cfff864383d945d307daffc7b924b5f6f4f5b5d030ff6e2a. 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/USHM91247725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47628f5d34b58c3ff0af744561245026aaf32482f2a287c1467fb3f4d1a742f6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USHM91247726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49d617d60c5a1913a385d386ae184a3537e40406a4bef8abf5c24278024a601. 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/USHM91247727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334498cc014401890712bb3cf0c157cb33e57dcc8ffeab19fd0ac021942d0e70. 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/USHM91247728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ee298fb902c4db8b39c7dfd7ffc3da0db56ceb814cd64a0c3a28882c94b652. 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/USHM91247729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6036fce214e50afef40822d95e7d4de128d5886d65bf25124926e49557fd6b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USHM91247730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148d378a933052c1b586dd5d2b0d0cd2c1cf02c8644ced0c7e5d9629202dcac5. 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/USEJP0800230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd27b28e3dd5db1211e0e73f9d18872d0d304fbf1689bc25d1a2dd396d8179af. 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/USEJP0800231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280a22854a0159b2f6b050599ee47d5c11d669c141862081431172d75ccd6b52. 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/USEJP0800232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b16f793c3aacb6ad46e9aecf6f8e08c8915623a632d8c9b6edee7e5085eeb76. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USEJP0800233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc727243e91b11658cee71af665750b73e0a51f554d6c7ce3826c15329adbc790. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USEJP0800235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d71e19104b71f13557a837d504b6bde841e0f274d51a31154c59edf804cf13d. 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/USEJP0800236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a7aaacbabc50c161dd248c3677543dc57d0f6dd6ad4e33a5c01cb5aaf3c9d6. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USEJP0800239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0332dc9b70cea19675d2bd025a889613d2a1d898f55bd1ba74352b94fcdf99. 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/USHM91139537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9a70c05f586ed1718c67cc9a92d4f197f2aa8a5da8a7452ec0a27da0dccb54. 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/USHM91139538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc3a1e079e48a573b839db4fe9cddfaa1ececba9e9a75e9c8608d028353750b. 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/USHM91139539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee4426b6b4a703165a8b3dba1828219fdb6286031602a743744914163193dc6. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/USHM91139541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2774e51b4b2f5bf6f60cad98b8e7c560b2d764703fdd2aaeee24777d03ba278. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USHM91139542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff2115a8cb1423da7c4c03112aefc6ef31f98ffae5e88a7e8a3fdb01c1d7312. 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/USHM91139543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc566becb0c366c78c319a31444c2ebc5b324ae469de29e6884890003c08e95. 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/USHM91139544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3b6787dd877fd9adb9d2100346a966f3a429302a149bca3dc784153be69303. 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/USHM91139546.