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 0x41afe3ccfb436e64709aea6b5e12065a7c1305ecbf00a91aa33321170e125089. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/990de96c-8026-4fea-9f2b-16c3ddad9da4.json and https://artists.proofprofile.net/proofs/artist/990de96c-8026-4fea-9f2b-16c3ddad9da4.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 0xb767d6bdb979ed293624299ab23cfd5758e3c32597959b01484bc3e04d2ce08c. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/USL4R0760246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08aead3b8113783ed3a62035e1030d46924adf78955f1fb2da072361ae00229f. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/USL4R0760248.
Blues Skies (feat. Leah Zeger & Gonzalo Bergara)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0f76502af6199db679ca886ee8b0ffc099b60eb5dea605e5e620dc16a5ae57. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMYUY1300047.
Place De Brouckere (feat. Ben Powell & Gonzalo Bergara)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16f03764b68b70b892c261de4b59f47e7f8c7d61eff8240f7e0740a761eda70. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:41:12Z), 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/QMYUY1300054.
Swing 42 (feat. Gonzalo Bergara & Rob Hardt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5173b0bd0e75e956eabf72746f6162816e683db487061d9cde62e548531196. 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/QMYUY1300056.
Billets Deux (feat. Rob Hardt & Gonzalo Bergara)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb7c4edad302f83ca5764a3c61578db8c89e035294aad130bd15264900c1235. 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/QMYUY1300051.
Blues Mineur (feat. Rob Hardt & Gonzalo Bergara)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476ef65f1e76514fb45b137f54de6a3c615ee97d3db31db4da28fde09782a667. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMYUY1300055.
Webster (feat. Gonzalo Bergara & Jason Anick)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c374adef6d8e73b61653c04339b88ca2dd24d4bc3b1acfb201c88f9b7019b3c. 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/QMYUY1300048.
Rhythm Future (feat. Jason Anick & Gonzalo Bergara)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f3f41e8801e7e5dbf1dc6339af20ec36e8a7423c586c8f415fa6c54bc1da3a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMYUY1300052.
Minor Swing (feat. Gonzalo Bergara, Jason Anick, Leah Zeger, Rob Hardt & Ben Powell)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1f01a5a1c5d6dd09cd29199b0f9a4d943900f62cf8ac4cbc29516da250d7bd. 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/QMYUY1300057.
Undecided (feat. Gonzalo Bergara & Leah Zeger)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4a6d5c42e25241ca71d309b1a72f8c0c842372d0d3b1c17c0abec2d2a69fcf. 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/QMYUY1300050.
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 0xffbb96c31f1002211ad09bf892c1f4d4e5e8b81d7067c5f8d66899a8a921dfc7. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QMYUY1300049.
Coucou (feat. Gonzalo Bergara & Leah Zeger)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85200177b4a22d203ef719338e5e7b2c6847583d7c6c3d56f468b1094236b67d. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QMYUY1300053.
Festival 48 (feat. Jason Anick & Gonzalo Bergara)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9162ff506cb68e6d6698c9dce734e7452e1175e6bae050ce132e4b08c7fad22c. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QMYUY1300046.
Swing Guitars (feat. Ben Powell & Gonzalo Bergara)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4c50dcade37a1b2619f2228ce4155311a30150d8362c51375d3d3107fe9536. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QMYUY1300045.
Artillerie Lourde (feat. Gonzalo Bergara & Ben Powell)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d096a7cabf16266a7af57fc7b5710a2d6b832e0b468d6b67e84d91724c08553. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QMYUY1300058.