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 0x177004bf52c537aa495dca844b1fca0ab1999a524ecc002b7688bd65ad1aa0eb. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e54fb998-a5fa-463b-a357-78f73e72bf72.json and https://artists.proofprofile.net/proofs/artist/e54fb998-a5fa-463b-a357-78f73e72bf72.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Where All the Brutality Begins (Live at Rottrevore Deathfest 2006)
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 0x75a4018ee683a801eb05e160afd17e5b109ec5bd45298a05c0114d48fb7e3e3a. 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/USA2P2307958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c87a034141be8a6df7fd1af8291bc5c9a7de71e1e726a151a17c833099ede35. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USA2P2307946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3399f607c78190a539d6806be638912b5ab83ce2b878f81d71594c047e1fc8cb. 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/USA2P2307944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdccbecd017951e3b4c35dd5f26a9e607fdafc0683a8c9f9b3d36bc63da7ef3f. 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/USA2P2307945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb450de48c63fbaa0907dad02888970a64124c8ca44170c2e800698be987800a3. 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/USA2P2307951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ba3f6ddd95e6fa4b4fba2eafd42b0b2d754822701a238cfa9ce831272cd3cf. 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/USA2P2307954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d989ef7fdefd2d206b7b095703d933b3ec3f25ba43887d5afcc57ea3ee05b99. 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/USA2P2307953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540e901792116f78f94304292c761ff1733e59bbd4359b5e00727041290df0d8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:50:19Z), 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/GX8LD2209024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9099f74822bde36295a98d5ac756fe06b661dded528822a3441831713dbb5004. 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/GX8LD2241090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8ff1b4977b1910c73350c65808f5110ecf720e06ad222b607ddec40b330975. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T20:36:05Z), 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/GX8LD2229255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf973f470720394a4f10c41def630b39cff97c2ad7ac886dc860c1f01e2c27bd. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/GX8LD2216319.
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 0x10b7c8b4dbedaf31fde42eec4cb09e6370fc2c90650a3f5d4531646ffa612d61. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GX8LD2226226.