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 0x3a223fe151f2ea624e8760c2e5da9ffdbf10c3b896a7c41147fc4a13be711097. 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/113ee197-8038-4138-8892-2c105747b821.json and https://artists.proofprofile.net/proofs/artist/113ee197-8038-4138-8892-2c105747b821.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 0x94a3dc6df28782ee1bd1730bb34b6b3f8e6858b02410b4d56e262cceddb1d2f0. 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/QZMEN2127217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0f111c6bfddaea078ccd1fc0fb7615bd72721f4662a2e1f630dc575c6aadea. 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/QZMEN2127232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8641b7dab83fa82a39792e543eb80e3e33fad36571cf125e62719c9e3f6e196. 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/QZES71857712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f34dab794003d9f6d264718ea892d9622b7b5bb89dfbc85ca22eac994b114b. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:53:10Z), 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/QMEU31816867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f63ef946c1f8d1a602e0c8ae5af96c65f46c9adb802be1e2d9627588be5fb2. 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/QMEU31816871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac08547c76f0d39ee57b8f3bbdfa25c1e9af6bd624ac5698abfadb3a1d9d22ec. 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/QMEU31816872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1734470c662af9242957087ac5ed5e8bc599293d42cb6687c7be337a419600. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMEU31816877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f5e0dcf49edb819c7032bb681f312772fcbf9f56cd8cfe92f16251437fc381. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USDY41744434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0d1803e85eeb0278c26d26871a8855a39c343cd696f75c5c970e76a2db57a1. 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/USDY41744438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93c62527e8983935337c18566ba286561c30c0654beab24bb10bfb08bf624cf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6G2498083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74d253d25a2dc320a7bf55da87e2b9a3fd08485d5fe8a9808f170a56ff9be81. 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/QZTBD2382850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70617de636688629efb9e68cfb8b76a1d4000bd4440b3893af7107db6f59a8fb. 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/QZK6M2153675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8292babb8005b35462e309d4d05eb4074e92bcd334d0773335545d8ccb704e63. 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/QZK6M2153676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42163172df140b9dc2ca538f232961107531e743fab936deaad0a842bc3b42e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6M2153677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54967ccdc2eb67e90b0792e40b5387c8fbcdd78c1bb2ed49a260a07ef475b4d. 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/QZK6M2178135.
Everything Is AWESOME!!! / Summer of Fun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0da62a485d3120fbdd2b6891d897b33200fc20ee269732aebd2365bccca23f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:30:49Z), 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/QZK6M2178136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74d253d25a2dc320a7bf55da87e2b9a3fd08485d5fe8a9808f170a56ff9be81. 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/QZTBD2382850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8df23ccb507eb38352c303729449283358c344ff482da0d58f4aaa6ddc043e0. 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/QZDA42482609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469f2e55a75154d8d7b887c27df097e06419d86a4ec770f72705afcde5dcd7d9. 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/QZTAY2409799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8df23ccb507eb38352c303729449283358c344ff482da0d58f4aaa6ddc043e0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZDA42482609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74d253d25a2dc320a7bf55da87e2b9a3fd08485d5fe8a9808f170a56ff9be81. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTBD2382850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469f2e55a75154d8d7b887c27df097e06419d86a4ec770f72705afcde5dcd7d9. 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/QZTAY2409799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60c4f59443abe41a07692ab3651f4758f19f4d3695cc5604e6fa77b1fcfd04b. 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/QZTB72411619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe754e61713ec2d6c3ea523cb7f589f2e83ac779c147e09805ee6a466602e9b. 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/QT3F42440417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad84327586ae4b605cb3367811eef58d82923123c71240392f888304e4ef939. 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/QZZ7S2488234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7dfde9ec6d4c06d085dbb2031e1c9c2e67421d3c3723eecb9095a80055b1b1. 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/QZZ782417240.