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 0x8b1fb5f85a3879d061ad7452663f84230c4bf304f9faa171aab1fec7278156e5. 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/eeb45af5-2519-4b25-a843-eea4f601c12d.json and https://artists.proofprofile.net/proofs/artist/eeb45af5-2519-4b25-a843-eea4f601c12d.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 0x961e78cd3faed48ff6ae18757e7908a369b60388dd1b02970d04a615024fbfa4. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:55:25Z), 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/QZNJW2260890.
El baile del fuego (La Forastería Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02da32e47d46884e8efa893809b51701ed36b55bc4250bb1251b4f38d3077f3. 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/USLZJ2317675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24831ce6875f062f75ca1f3aa7f07779b786f4c61876bb674daf6cbf64a87ee8. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:07:41Z), 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/QZWDD2477486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bfce896ea4a80ae9e2b1b24f3d6fe4f047c135e25b53a3ef6c96dd4adcc763. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZWDD2477487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54d4575224b2ef175571defa0f8edacd8a64568f0a4a7932986a546f62fe658. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZWDD2477488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2b23094a320088aa8499b38baa27315f87b1e9098cdf91e11e669c36be795a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZTV32455872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e467abb9a9c6c436cdc2353c8b16be6f62bf0fd663809d7034ec85c86700b91. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZWDD2477491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc205e9579f14032fdb99eb29ee552df738de0569d516cdf705fb0877f805c6b2. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZWV32517069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc205e9579f14032fdb99eb29ee552df738de0569d516cdf705fb0877f805c6b2. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/QZWV32517069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cac624e2c347c8fb09dca0eb668237e83af4651663e480b303dae9c3aedadb. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:46:20Z), 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/QZWV32585522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0be18266f4281e6bb06e607ed6a8e6860aa6b8959b4832876ce2943c8a4be2. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZWV32585524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba1efa98eb4d0a256c05aedd5c7fee6a4cbb215b47b8d2b3a98e31baeefe3cb. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZWV32517130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec84374506212fa01e5927990e25fdbf69cdb4fe48d9196f43720ed5b09c14f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZWV32585534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4384562eda5fa0274b1e3f521781da1e01fe39798b337ef3dc7b8baa43216778. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:29:53Z), 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/QZWV32585538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a644de2daa51844d36052e1496fc50eb7baa537d0cb91285446a3a339403045. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKU932382114.