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 0x865f8fe611ab37cc900c9d322fcc45269a845fcc6a13b4c7ea9db3982e545c4d. 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/a16c0a70-1596-4ca2-b6ba-916e337634bf.json and https://artists.proofprofile.net/proofs/artist/a16c0a70-1596-4ca2-b6ba-916e337634bf.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 0x93fa7be48e111de50570ae30962b4cf49774fce9ba91d3561035876809526e76. 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/LKA0T2300343.
Udawadiya Male (Sasindu, Raveen & Sithum)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af8d007b91d77de779f5e9e3471c119e601d3822bccb23b79c77bf3b8dbb52d. 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/LKA0T2400167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc563b6f8f4be8d14be9b5a42a8e9135ccc4b5f7d7d269504c1763237deb56155. 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/LKA132301015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea6adb07f7f7838fc60b6a3fc285c1522ac00a1329d644471adada213564574. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/LKA000014185.
Iwaseema Dan Awasanai (Susan Hettiarachchi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1752184908ec11bcdbfaea923baae3664b063b34b692847f0d5b2c5c50281194. 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/QM4TX1732701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f83ef11efb40710fe9a62665c2a983dda0383f393bb5c444c83bc57e9fc3dcb. 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/QM4TX1728913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e6421924adcc73baeeb1986932318d452347b93c69261fddc2bc9b9980c9b7. 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/QZK6J2172281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2716a534c84789a82768c2d3cffe730ec8d60bac55f82ecc369e0e679db33d. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/LKA0T2300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed15b7ced16b904134e5910e34fd9879539e879cf0413cac2dacfb6ff5ea6a0. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/LKA0T2300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd1f61597ce9b75b3d803e4329abf2be7f31941acb0a22de7588822c51be9e8. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T05:07:11Z), 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/QM4TX1727727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175138ef50868389daaf8545a46e8b0dff98c4e3f3877a7e884eb97ed0b9c0ba. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/LKA0T2300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d76164803c91bad2a5e8fa17ed1f0fdb284f46bed5e683078b7748405dd130e. 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/QM4TX1729292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ee4c083289f6b24d26979cb1e3c81de5c4a689a2d79d34bd0bebacf9fbc578. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QM4TX1729302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6aa115763d6421946bcb260951f7fedf5d2c917a775b03b640ba7ce82012770. 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/QZK6N2137300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fbbdd5f7aca476ada9bc5c23b8d5c42dc550b41572864ae9539a7fb5275734. 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/QZK6J2131248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422ad43fa805a03c253ac3dd6fa65270931c8e692ff8634beeb6e7570555d30b. 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/QZNWS2114912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29de9fbca14441c48e3d07056e41c007b13c75ccb945f1d742f99da59f0db0c8. 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/LKA0T2300117.
Hangi Hangi Ebikam Kala (GeemathBeats Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1809c24145626d26cd3a5d3e1e74b36e34556d82b06a6d2d3775f086c0268c. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/LKA0T2300373.
Me Sansare (Paputhurin Muwa Thiyan) [Live from Rise 2023 Music Fiesta]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98ae4a18b594fbae306a135e8ba8d553cc79ab494a6415d77a549d7b85317a2. 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/LKA0T2400213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc2579b2497f3a0bb38dab5081345d22c7a0087d0bd765f2bf81e2d8add6d79. 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/LKA000010331.