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 0xf1fbc0143c6541352f50de27b0e0245734e985eb3e47b34972e19c2ab798ac41. 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/d6ccf505-27ae-4fb0-9f65-b005f6263f3b.json and https://artists.proofprofile.net/proofs/artist/d6ccf505-27ae-4fb0-9f65-b005f6263f3b.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 0x141135e95bcdc9f17628807c409afbd54237566121d3d54dc27255563b76aa14. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWV2109771.
Lofi Summer: For Everything There is a Season
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d1f9b02b1f91d456abb733a7c18126743e6f3f34ab3a34ebdeeb4ab609c5b4. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USDY42454976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a5f0f49af8d71a7c3af99bb09305c0a5a6f3992b5ddb05a305f442d649e8db. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:06:18Z), 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/USDY42486858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06e689d95b01a090d1e9ee6be767b8e6efbcb39703e866b4fa2c7087e927d63. 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/USHM82416179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7940e1eb3e0674389a61577ecb7b49afcb6654c314834491add4999225da4f9. 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/USHM82433484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7940e1eb3e0674389a61577ecb7b49afcb6654c314834491add4999225da4f9. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:19:51Z), 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/USHM82433484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b9ffdab0d7043ea96ac00f8b6257cfd9e3be237450fc84b1a19d551586fe34. 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/USHM82433489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0289c4a22922448ed59f13eef28bd76e37a0f7fadbacd73f171e26fec82093. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:03:26Z), 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/USL4Q2423630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86659095c055d88f45051894aa4e361b27cb26e2f9b8710c66200949974439b7. 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/USL4Q2423628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f17467a5bdbe51c535064af55182c506dd4941da1cd438039bc421075be0eb. 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/USL4R2463935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bd529831f7f36076ada7f1a26d6589adc838b4401d285a83c6bd5957c231df. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USL4R2415133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10ac37417a01842f70a326b60f79b9b23b96d79f311c69c25b1c41361c68bf6. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:58:20Z), 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/USL4R2464503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846b720268ca87fd3848c03874bd3e6210de00a556ed800493257f3da23bafe1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USL4R2415176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ab7679943998db438716f97cd5ad93f7cf1db0644d3ade360a2102b85c6fd0. 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/USL4R2464580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd679aff39472343dabc3f6df31eeb02523727bd6d664de702c70d5c87c2b5ca1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USCGJ2595410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276c3c0ed54c725702dc99b56ad5f4c0b0b408f1c2f10a10953c6d9a00b78376. 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/QZTAY2556312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd622c26f2bf980f21d7c34b98d077af1b45f0f71c54aabd597321f0536fe27f8. 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/QZTAU2560798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1e61e8d968a89b78e1ea6123cc7bc240f34cb511901fd7aea03d05b431fc1c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTAU2560840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78582c983da946b583205a93aa6304656deef95288f9532de61f3a226b803bf. 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/QZTAY2556313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f46c0d65f3477695879132fb77e9fb5e20ea092560d1b00eb86bba518eb087. 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/QZTAY2556314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b8752bc9d4e059e3c20f69551b65b5082268f21d20b799fb479fa0643f9ea3. 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/QZTAY2556315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16225f1200a3d775dcb629c5029cbf1c169afeb14880e5d632232e2beac18f86. 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/QZTAY2556316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc082c6daccaeef753d39cfc32f8eac4fb01aa8789ba1a1e6c976955d8d70716a. 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/QZTAY2556317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ec3537ed9eaf02c2284f6eba04de57febb4093ed6417b859f8820b40af1f06. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZWFF2524977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc29da2bc135f0c27353df3f65ec26de01964ed2ca43712667a2cba3eb6e2798. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZWFF2524979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0175cf522a1eebafac36ab127c1e0e021a14bb58135570c5a3045e6cd298eb40. 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/QZTBF2543157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c79b6d1940fc51e7185ff109dacb748daa4657ff3a8a85a3f8106d7c36729c. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:22:19Z), 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/QZWFF2524983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08cdb5188ec6c530336124161577d5d532a92940dfd1b25d639330ab0e364e61. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZWFF2524986.
You Keep On Getting Better (Lofi Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd10fd6622811a059217eacb3c4e501b659460152c441df99416d7c37d3d6a1. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:16:51Z), 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/QMDA62546318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65669bf5f4aad775746e055e97ba5b30aed639018dbfac9cab7d62fb8e1591b. 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/QMDA62546319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9028eb7cf61c1fd68901165a11a78071ddaa546d6af6c0000a92171b3fc1f31. 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/QMDA62546320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d972598f97323913e748545fc7c1fd1cb6dfafd64e6a14494db3319d409c6c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QMDA62546322.
Firm Foundation (He Won't) (Lofi Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042c0238bfcc514b363c033ffe454787c22b62a13831894698e531b544b830c5. 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/QMDA62546323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd87c5a6ed67f335aac782b43328cc7ebf179ba0d2aa3c7e6c8ce9ea6020f30. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QMDA62546324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a46b857312ddd19d7e7502be2e53895bca06faff3b4bd15ffdc1aac67b5162. 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/QMDA62546325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252ebfed9dd8012335bf0a9f291e82ad10f279e8b062b7417b7703b0bcd87f80. 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/QMDA62546326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7dccdfadfa810e55cd552562266484c13905a96432b1ef726ae5d5e21719b8b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QMDA62546327.