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 0x313c0b08b8ca5ab487af415421ae47b2f56794d81912ccac6f3173c0ae6cf796. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b148601-ad36-4214-904c-1bc1484b9a57.json and https://artists.proofprofile.net/proofs/artist/1b148601-ad36-4214-904c-1bc1484b9a57.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 0xcaafa2e611795023519d1179795fa1a448debcac44d1644f7378b005cc822feb. 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/QZACR2100354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7960c1a71706f8ac841223337e2814428bcc8e890e1bd5f57f6b0719a5b838c7. 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/QZACR2100358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bdfce940dc603020d1765a95276d4b2827604f557a675e6822a01facc3396d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZACR2100362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c48c2d4977fb15998a11c285ebafc8bd45ce8b0c80103dfb0a1627b64755e6. 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/QZACR2100365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4888d32e358c82173ec56e991889fb8d58b58d9a89df1c5175f1f50c1e40b8c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZACR2100366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc9cb501d79661cc014f3ff4699ca223f5fde15924eb67ab188d58cf53e34d8. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZACR2100355.
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 0x14a4873040fca0adc43c6f321a5b82c0589c616feae2ca35d9d8e34c755c93f0. 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/QZ4G32500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eafcf3a681fb1048664e9794def3498751c4cec05301825c3ed655b2085462e. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZ4G32500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f734a36ff60a663b82f5a8da22842d3353c77dd2fc697edb51622c3c18961e. 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/QZ4G32500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee3b5919787d375cd516e879520f22265baf8735e0937a7b27b1ea47eeed41f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZ4G32500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8be7b2cc81c6871c305dd2914b62fd493a835e944c33fac06be8bdce7d11b3b. 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/GX8LE2560848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe810270187482bd1f5ef73b322906409c78630511ff2b0f6de5c8bd47a74c9e0. 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/GX8LE2538165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728a1f17b8443f06bb50968dda97aca778ef44ad7a57c2bcb966aa623e46faa7. 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/GX8LE2571475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0808d43f1ce8d53a12470b8ac67059c85c42c6632716efe32a5b771af890e846. 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/GX8LE2549908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8816979397c256bae7f4aa0abc97c27e353467b3a380e22147d0499116a3be71. 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/GX8LE2588426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044a43d6181cb4e88b6b6272cb9e667b580143cbc0d30fc4fbdfdd6509a141e8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GX8LE2574554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311f63018ce4425a7d59d5b8cb6dd9459761b5186ac1e48b308e8e54cb81898b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GX8LE2577345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fb8108bf52642d44b75162d352c64dcbf66a1a2a3d85f57e989872efb5b791. 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/GX8LE2543297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd804ac24427b8171161b2152516daaddc29373a79de23cc662afffb7bef62537. 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/GX8LE2511223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8016e607f116e9d3b8a61b9682b9959c5d790213f17ecb926e8462155ed659. 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/GX8LE2593550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a82669e95ea6868de5b86e5451c358923fe113ab3ec698390163de985076ae. 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/GX8LE2599216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c6c1ede93c96f32b570a22dcc5a50598de6661865890d04ffa896d393a4af6. 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/QZK6L2002880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf030a75e4e1d7bb79df6ddfe53f7fdbaf081fd3cd1b04ec2bcd2105edd1f7248. 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/QZK6P2084645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d8226bfe2e7724ea8ec9b597d6a5286c767db8cca3404bd4093847a4bbcdd4. 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/USUYG1449970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fafbf8a6b767c18c786eab1491d139cb74b8309e232df5a516422c3e3ecb29. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZES52304059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a67f3d022ac9888011fee766e2d7cb1b5a8873cfecf379236c13b1b5241e3b. 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/QZACR2000242.
Yellow Jacket, Pt. 2: Friend of the Killabeez