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 0x60a4e74d2aad2f6af6d734c481caf976ac2a367a4edcea74ee0834d61ae6a9aa. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8050489b-5cc2-4a47-b304-97f626315db2.json and https://artists.proofprofile.net/proofs/artist/8050489b-5cc2-4a47-b304-97f626315db2.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 0xfa9ce7607c149745bf148a8a41d72f5eb0175f8f60fdcc1818e0028562b3cd55. 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/LVA100700034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff535b89fd6897d638f8cbf62856d00f4c8ad3a9580fa3a47033f4ad1d1e98bf. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/LVA100700174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78602f0eaa0c3cede7b53abfb91957138517b7db2b05b4f0144b016e0cdeadbe. 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/LVA100700176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17389357e630366b7a0177ca5b38e9c40d0d24ffa7fdc4695afe59911b6ccf77. 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/LVA100700175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37f2854d7b5fe95331fd7d040ce57879d1cf07826fc54ebf1873417b9f1d3de. Chain 2 (Bitcoin): anchored in block 957611 (2026-07-11T21:33:50Z), 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/LVA100800115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c814d8ee61e7da056d17d5cac55466d0d7a650e2a84277b4e072ea0a9ffb0a. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/LVL151502077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9307e424d40183cc1c04f6a5e704bc8fb21ebc7710f09818409cfaca3db64bd2. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/USV351456366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9a57ea2d2795b22fdb2e2e306debf343c52a45394124ff634f491f4c1d44ec. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/LVA100800110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37f2854d7b5fe95331fd7d040ce57879d1cf07826fc54ebf1873417b9f1d3de. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/LVA100800115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78602f0eaa0c3cede7b53abfb91957138517b7db2b05b4f0144b016e0cdeadbe. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/LVA100700176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c29d843fbda7fcc6900d5425d1ff720b361847985ea2f8b23039f135e6bb1a4. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/USV351490128.
Mēs Jau Sen to Bijām Pelnījuši - Dj Uga Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9687d49b094d1e0bcaa243d040ac05a4ff6f3a5e8fae32f262b9f5f3659c6ab9. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/LVA101000076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe730258253105aac15c53f134ef975913d51cd8f553f8c5a6ef4293ad86f37. 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/USV351456353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f928dcb8c64d35c808dc760813091dfff10d6eec1c7d4a6bcecb70f8ca7f86. 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/USV351456362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1909a5bb73173490eea0b3e7c6b33e3c519149824b035b38a9dd2889266074. 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/USV351456364.
Mēs Jau Sen To Bijām Pelnījuši - Dj Uga Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9687d49b094d1e0bcaa243d040ac05a4ff6f3a5e8fae32f262b9f5f3659c6ab9. 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/LVA101000076.