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 0x0916fd50987b9fc312152ee5d2eb2ecc5550b48277d9518b1e0bd46ffe4539d4. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5abd8bb6-7c2b-469d-9f34-f89dcf4a22f9.json and https://artists.proofprofile.net/proofs/artist/5abd8bb6-7c2b-469d-9f34-f89dcf4a22f9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The New Project Vol. I, Session 2.1 (Mixed by Pastis & Buenri)
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 0x911172022b7c6331c62b46c553c681498e29d61dfb33be60871d714f6fe4965e. 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/QMFMF1529463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561a56abb741632f2ca76a7e79e8b8cfb6fd067b80929827f7688ff6c913193a. 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/QMFMF1529464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa208bfdd4279f6ce21c2b2482e720716e6eb06df18fb25e646c6cd7f77bfcab9. 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/QMFMF1529465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0326c44bd58a4d97aff0dd34887f560e1feb4b0bb9cb6128c9ca00bc7f5fd1. 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/QMFMF1529466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57e24eb5f0e3c0dea8e994603a994d868928da180c90116bf2163f867b10744. 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/QMFMF1529467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7545120e5fcf122f06daca35426459eb2a25e56167de24972eebccc141f1dc64. 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/QMFMF1529468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24eb6ada06f5d55da267c160f7567928bf771f0c388c57410cdbe15629a0a9d8. 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/QMFMF1529469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8016ef3e9e863f03b03df637ed74f9d6377fb5b479372558c0bb18357ddf17. 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/QMFMF1529470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe549f766635a81448d2d17ab4cd699d10c0e9f1e4d57eb79719ce826c8a3ab8. 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/QMFMF1529471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7b9a4b22dba5f0484ffcfe28c09d0050d2f7b21d972d5675c08ba8cd58d11c. 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/QMFMF1529472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c18cd983687af53329c424766f33fde7f40032ae8f2657b17933f390f0df3e0. 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/QMFMF1529473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5daed5e61514dbeef595453476f53a092e205185443103c76f44ed21f2e73b00. 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/QMFMF1529474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129d5b8f8e233188020a29136ce1e5cdb16fc8821351ea09864316d5f240cf7f. 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/QMFMF1529476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0b52633dcd774af5db4d3514ec08d439392255ca55c6e7cc6fbbfd2b03940c. 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/QMFMF1529477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8614d91f22934c9ecb318f0f22b7d02c5cd7b832a403dec2ba641e31e92a1e. 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/GBKQU2233309.