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 0xc54c28287939abe20c7406bbb29442cc6fb12f57058cf4f911b58116671f8f8f. 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/bf06cc61-e909-4f0b-b560-b223bd2bf90f.json and https://artists.proofprofile.net/proofs/artist/bf06cc61-e909-4f0b-b560-b223bd2bf90f.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 0x9ef6db170587a35523979a458a0d404e53476d630d3fba5f170b8f0cfe61935a. 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/USCGH0985737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc3eae35e8d4ef82f8ead3163bb16b37c84bcb392491bbd2acf216bdce236e7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USCGH0985742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd6ef0fb3cb6198f230219a3fc08801acfb468b103b932871266634095c3cb5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCGH0985744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb797d6806402eb6925c47ca378e917c8e8cb9a9b7ec8d8428788d4951f74bc. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FR6V82352295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa14ad74a6fa9402f45bcf3f1dbf62bc369222a62d714943d048014b19b464c8. 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/FR6V82352298.
Inspiration Everybody Needs One (Vicor 40th Anniv Coll)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d30eff0a85604e413659333a271c40b2781949494c3e98e7f6e34d791ae37fb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/PHV021810004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130b58e658cbb6cd93a034296d997694983b8004b7234e666f1295733296fd1f. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/PHV021011684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce423d3c72809810f686dd5146e3be813aebcba66d90fbc9aed933531542f04f. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/PHV021011685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f690aff42d069dbc787c1cd534810017d7b8532cb8dd762847f323539cb032. 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/PHV021011686.
Inspiration everybody needs one (vicor 40th anniv coll)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12c70c5144b493e52e9af8e419fce742ce7adb1f80c5818814eb8cf5e6b59ad. 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/PHV021010424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6fac87a2b955832ed1f33d6f30fd5013a074d6d21af85c5e64e09933925ef5. 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/PHV021010427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a123708d98723932a727d96790ff07238f4df5874dcd4a9c2465ac79b403a71. 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/PHV021010425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4258648c23c75b8cb1ec3f205b10274f2b88ffaad5747b544c10739eab166f. 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/PHV021010435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0524419a158c96c7dccc96d1cc2048b48b4a3d5c9a455b04842c94f7425c5a2a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/PHV021010375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367a884a8e6a8fd5cc89daf42a44a1e9e83a17fa069b51bf2679cdbd26847ab2. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/PHV021012891.