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 0x1611f0a5741c888b6e461d0baa4668b12908a1002387b5587ccfbfd9eb96ff47. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6418ea24-c7d8-4539-80b6-43f749838255.json and https://artists.proofprofile.net/proofs/artist/6418ea24-c7d8-4539-80b6-43f749838255.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 0x87d4c73a6cacaf8fca89701e36008fdf20b714532626c385067f4b2559bf734a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZWFK2320598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9583d471c0f190ac5513b1ace0c5330508ce91efa291592b37cb4fa8fc51314e. 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/QZWFK2320599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ef1a322a0e59da2626636b982d2373220a6f8b9e175f5c90a96816d39f0064. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZWFK2320600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0832afe52f564f3973e6eb8d2a36d2967f6216f01eff14b6d5092121dfaedd. 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/QZWFK2320601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405d93418c1ffbb90e0c111b608da95be6ef11dcfeb5125ab3b796cacdd14863. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QZTB22327007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdf37533ab225ed7c5b7acee864264bf7ae52062bfb9e091d1da5795107a8a9. 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/QZWFK2320602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f8e9412063d9755d94ab4d948a4b3dfb71a1b129c09c5270013ea73d3a4840. 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/QZWFK2320603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957a76d0e6d7640a3f331d54073c6206693ab6e091ec298f830c515fb74fb93b. 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/QZWFK2320604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199b3960a4712191928c62ecf9f08b945dafd6840d05167463aa28bbc3f74eca. 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/QZWFK2320605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2995d5d8d1ac6a03101a3a3b78b7428fb0a98c6adf25e6a38cc73d3eda81792. 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/QZWFK2320606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53cd4cbc7def3eac71aa2d31c986b7f19033fddafe65b3ddbb75f47424ee308f. 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/QZK6M2133593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25244b0c97d8da9664c2b19087adf0a86eae4de23c1bf2a7291597776b1473d7. 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/QZHN92431670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e428e5d5fcac2476f5a80300ac0dde4c9a02c0588fe143f3a65ccf356e292e. 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/QZHN92431671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed31a0eee98bf613726636be31d8385acdddac94ba7d82bc69fe8419185a3f6. 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/QZHN92431673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f1fec7cec00cf0f8c0926fd59216bdfcf6b17076efabd0cb7fbef881f82fe7. 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/QZHN92431674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a33d440bb93102b9d9951c552b196bcf61486dc35998229f037fc8c52b50524. 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/QZHN92431675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1586e9ef1d3b4aecc0e2d830ad25282fafd8fa299bcae0421d887bf201b26a57. 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/QZHN92431676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7d87b4c977f334ec7f91f36d7490c68fbc8ed7242565e1109e5bed494a18ce. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZHN92431677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d43797f3fa9d0d790c2c1ec43883d65b3a3dbdbe7fef89ec13297a07d1809e. 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/QZHN92431678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9124c590eb0091c7d16ee17bf247e0bd1f62d9ff2db2503d2407f18ca0f99699. 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/QZHN92431681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37d7ce743b90e9ecff56b13dc4a3c026df449d024df6823b63fd2512b6c1139. 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/QZHN92431682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd983d08c6f09db414eeefe7ef8bfbbcf8c68f6f9037df5e630c92cd1292d7851. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QZMER2183571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8cab655d92f3cb0d45c8630ad291555cf2109c7369f6b1a5d4c57a39cfc8e9. 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/QZTAX2496027.
Ego Freestyle III (Driemanskap Spaza Gods Cypher)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9659d4f06b5ddf769e464b524fbc0186eb67a4b608c1a9e4f1dcb68f68860f4. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/QZMEM2492424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1eb87fbea10a242ddfa3ef0d4a4388f2c42e17e680d10062ff03332cf137d90. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZDA82444548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405d93418c1ffbb90e0c111b608da95be6ef11dcfeb5125ab3b796cacdd14863. 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/QZTB22327007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593ab370eebf9ac925f74761fa3663cfd61484d3da17119d661b5d2747e0f6a9. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QZTB22327134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156322264788825b8716eccb7431e7b9fa6ecc858cf2ba9c24a4836de39d976d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZK6G2315105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e814292631c93c5c3e0511ed4c40cd075a6e9d49345508f15f67c59ebe1d776. 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/QZK6Q2301704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c3ff2e299455f1726ce0b0dafb690922fff18cb9f61d35e5ede3fc61ae3eb2. 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/QZK6Q2301702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3cc49da838c42b44f05627ad2e2b2c28da5736270872cce6a5a179ce68b86e. 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/QZK6Q2300923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa714f1d8bcfd1726ee2565e3c8ab5532955e79412a8d250b1fbb64369d1dc10. 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/QZK6H2102242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f2f0f1af29fbe23868007d34f6f34da1878f87ae03ece504b86af1f28f46ee. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QZHN82106546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190dde07326c5662ff66cb8529748eca2dfbca8e5d210472dc8b7c67949ad8d3. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/QZHNC2169259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb423f55e3377005260031152510a8a31c20ab334d203307bed91b8bae6f88a0. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/QZK6P2199680.
Ego Freestyle I (Studio Session Version)
Ego Freestyle I - Studio Session Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831812944662ddd9c0cdb087f0f5b12e63ceca56e24456a310f2997d03f5b885. 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/QZK6N2369966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2208e62bac1daa55c46186fcb340a2e9a3bb0f068342ffbe15c2c105fb9a48. 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/QZK6Q2306903.