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 0xda92190e50fffa590c0909fe002dc60c87410b007431282cd0e14ee7b33e49e8. 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/dd9778ce-4e6a-4589-9bd1-33c6e9f13cd9.json and https://artists.proofprofile.net/proofs/artist/dd9778ce-4e6a-4589-9bd1-33c6e9f13cd9.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 0xb89329482df17a6efe4dbdd0726ebcdfdc28d5424cbf57fa3675e58ba4d23496. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/LVD011400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb2d96ed20976953074068f185a9c0fb213807982fefc3e9ccc7f1ac2c350ad. 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/LVD011400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb5e877f47f59dc6a13cb58f1944728a11eb4d986b2c7db988104cdaa1be946. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/LVD011400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8121614a9c49135a34bab3b4e8c96a76036db3d72ff61cfdadd2696a2ba1b0df. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/LVD011400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e40a4e45646d735aa4c2dff64987dc9c836024150192320f4296fef1cae8e8. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/LVD011400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89329482df17a6efe4dbdd0726ebcdfdc28d5424cbf57fa3675e58ba4d23496. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/LVD011400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb2d96ed20976953074068f185a9c0fb213807982fefc3e9ccc7f1ac2c350ad. 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/LVD011400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb5e877f47f59dc6a13cb58f1944728a11eb4d986b2c7db988104cdaa1be946. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/LVD011400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8121614a9c49135a34bab3b4e8c96a76036db3d72ff61cfdadd2696a2ba1b0df. 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/LVD011400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e40a4e45646d735aa4c2dff64987dc9c836024150192320f4296fef1cae8e8. 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/LVD011400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9dcb1380267345e67a5e65d2c7cc0195db5fae979d80f12cc38e19815a158e. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/LVD011400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ce93a1a26ea160e13f438b65322b203f396a5323d9e0113d439e63915ec582. 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/LVD011400365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ce93a1a26ea160e13f438b65322b203f396a5323d9e0113d439e63915ec582. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/LVD011400365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56797fd59a585fc87a3a57f7a1d3d75dc97c105bec1a62094db2ad5531d85b7b. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/LVD011400366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb009c45f1637d861492f27a30da26ee169e87253912c1f2b358e4a70e8171fb3. 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/LVD011400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f97851c73eb6877c6db23c1e54be7966ca81d8feb8972feb6564ffb1f47c40f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/LVD011400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3525b10b560fc86d939158b61964897d8e33b67a73876e7f79911fdbf6bfa7e. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/LVD011400383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56797fd59a585fc87a3a57f7a1d3d75dc97c105bec1a62094db2ad5531d85b7b. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/LVD011400366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f97851c73eb6877c6db23c1e54be7966ca81d8feb8972feb6564ffb1f47c40f. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/LVD011400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3525b10b560fc86d939158b61964897d8e33b67a73876e7f79911fdbf6bfa7e. 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/LVD011400383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3c0ec4a1e424b6f5e59fdf7e9aa107dc51ae505cd90af40fafebb494f3dcde. 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/LVC251401337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39966c9a3ba9f488ccb389f462953f12f9e34bf8e4d42944b25f0038e93334a4. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/LVL152006659.
Jubilejas koncerts VEF kultūras pilī (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e9ba2c016a68765adfead49843729f559b503d7a6f3577da742e7b0b5de25a. 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/LVF431400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab926b81129f35a39434eebae03747b2033532b83f82bd3943ca9b5e775af64. 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/LVD011400048.