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 0x5ef29f12ac0e6e8b175d8e431e16fad97815719f02bc7ea413fb79f3ebdd39cd. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf7682be-7e65-4a0c-b006-1701ca7b95bb.json and https://artists.proofprofile.net/proofs/artist/cf7682be-7e65-4a0c-b006-1701ca7b95bb.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 0xfd8694c388d04a91a1b4ff98130ae056ecbf583857ce7931bc551e6206e821a1. 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/DELJ82088871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5271bfd4bcc0a14f34ed5930e93d5a5159baa96d40214a4db69f655af9852ec. 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/DELJ82088878.
Ranko Presents The Intergalactic Funk Affair
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6834b9e2c0efca649cb0d2176b252f260fbbcdaa13b18f93fe17a33926eb717. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T15:40:01Z), 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/DELJ81959845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe40f54710e349f7f08a0748c9b83d9115cc9e288cb35806f1cad7851532c41a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DELJ81961485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae8caac3752eacdb85049b74e2433b929bb29805e30f0856e26e6be5832c831. 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/DEYW82412202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0018e97fc3c0481186b10307a3044fbaa7c94f4350babe6e13a54e3d92edfab. 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/DEZC62447067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338b4c5604d050fa3f0c6ec5edef0bd5a1124c7380436927aa5b927fc4fb21db. 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/DEYW82501303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae8caac3752eacdb85049b74e2433b929bb29805e30f0856e26e6be5832c831. 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/DEYW82412202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34febfbb932c2020aadb137d8368202c95d2feddf975e632a6679149c57deed2. 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/DEYW82417906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02adae533a571c7b24b8a06e69b681ce603cc58ab72910f98ae5ee190404d67. 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/DEYW82501304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b5cc91ef993ab35361cdda504107848f387006ec0c1b518666baaab02538f0. 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/DEYW82501305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf518f660a2908e2dd1811a5d33b0f1ecd194a4602edb2da23f12414deda67c29. 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/DEYW82501306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57c38cdffd8be7c06b445abbe146d317dc1b979da02a8b4b7211174f394108a. 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/DEYW82501307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34febfbb932c2020aadb137d8368202c95d2feddf975e632a6679149c57deed2. 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/DEYW82417906.