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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 0xb20eb43416abaaf5a2bf705cf6062403422737bb07a08452ec54b2a7e5e6d26f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/901bc5b8-199e-4e8b-8ffa-8fc7a815fd29.json and https://artists.proofprofile.net/proofs/artist/901bc5b8-199e-4e8b-8ffa-8fc7a815fd29.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 0xfd27d0f64198afd8f6420414db49e92bfbfd4b4b51e4992c3a73cb0d50717625. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/US83Z2113629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b267273500313b5e9bf3bd204a5f08ab3699aeb97f47bc960ba9bbd27bfe8e. 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/US83Z2136255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1b0a9a2207c3a8b91a97a4dab271a37f0bf3a37cfca5a3d62cc31797872836. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US83Z2136262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c730743afa41d8b8daaed96d32c62edf5c23bc718ca03ab7b8adcd364f4699. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US83Z2148331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0d3f6b83690312a4e383195eeea2cf460aa9aa5cb2858e27549bae6813b8c7. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/US83Z2218676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581af7ecdec1eb17644b8f9e16a3aed8b8dddc135d46b0d55b0fc08b9b911191. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/US83Z2230893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c7047cf4b7d57c9c6fb8a3f570a2d3d1a6e334d9cffccfb2bc67f89040b5ea. 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/QZTB32283580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205e4145ad0d5a7c54f6ac948d68110d0f400da3b04c8a3b8d1d40a537407f9a. 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/US83Z2314674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25ab8d9bf37f17d30e8adfae7b1c331c8a45e7bdb97e72598a91f880c4d4a73. 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/US83Z2314675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de627770520a3ac6f6091e0388817008e710417de294460aaf3bab5a4916321. 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/US83Z2320948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecb6b29db56efe1b84d455b22960bafa2708a1445336d80d7edb919680cc9ab. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/DEY472470910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb7218eb22bd947791d061e4a73e7920bd805bf2c43bf7ddcee4a81ffae1e5d. 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/DEXC82400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9578a391a6c4a91b597372e736e1caf4cbe1f399d1296d1e31f6fa290ba126. 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/QZHN82567770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414351540ceae5d4066448532c2df42c839b8e507191b7e9e890e379962085be. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:18:37Z), 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/QZNWS2539634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf252667e1c24b1b165861f3b597456924f92e0518203f80a776d9a4c349f29e3. 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/QZNWR2593577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3c472c7aa76a4c2c1aa9c4083a610ede611af88fe5887367fc5a8c20d38423. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTBC2586868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bfb5207285f4ac9a0fefd6cae2938b2f682b40df88ea92db24aa62aa3c8a06. 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/US83Z2115779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f8a19ad781ac4e01fe02b9618b5accc595006b397fc969f353124d5d2e8596. 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/GBKQU2269087.
Shishi - Vule vu couchez avec mon Tripmastaz Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041b587523092eb606b590a2c0a70e458a8d165fd3bc4ce6a73d6ea47fcc761c. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/GBKQU2269088.
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 0x07c31a1a94f6e4fb9b15ca0e09312b14b7f1a49bc3c2268be7693f023ddbde58. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/NLRD51966430.