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 0x790bbb5de263a53f05f419f5bb8b9c1e47c5b06b7293606ad55361ac1996df2c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ca7e4649-5178-4754-b1ea-0baae36fca1f.json and https://artists.proofprofile.net/proofs/artist/ca7e4649-5178-4754-b1ea-0baae36fca1f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
You Never Know (Freshcobar & Lavelle Dupree Remix)
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 0x31fa72f19c401e6bab803bfad75d4b81b0c0dc6f5383009d92d70060488860a5. 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/UKTFV2301009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2c0efba92d9e76bab6ee9190c1275280a865b6f4fd0b0c197764541ea3c3a3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/UKTFV2301141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d082daa711c511b90fbff79d98c82f0c9b4273e6c0237cc19c401330f16ee6c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UKTFV2401066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f14952b391b8ba6902bb25e3ff10448a3300ccd6a8ccf28be9fb8c17483c29c. 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/UKTFV2401094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22812993499c76d6993cdeb1b36bea773707c8de0e9fd77b06f51f6198e41857. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/UKTFV2401164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426ec538fb14189e8c2979e76d086ac1b354af22cb6a97d02c2cf1a27afbb160. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UKTFV2401166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54a4d9cb9552c690387d695cdf0c11fd6d6ba461181d88c09664141e4fc7773. 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/UKTFV2401409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdc53fc9454e087b93fdceffd280941106af2b96f6c14a42d8715473c1b8d79. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/UKTFV2401411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f16e1ab3ede27d6e0d373d0848013b47451d3c56b33107620a06296d8d01c0d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UKTFV2401412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72255a433d4a38a085fa44a1f3ef9afc3e5efb2e654b565e73162a931efbfef6. 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/UKTFV2401414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e534a75596010d33c47fb554e30258c5b331d430773ef237b05797c6025629. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/UKTFV2501672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11f2d7ce166fad916369267a28e622a6f66850c7d52de7c81a4f702b74c82d3. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/UKTFV2502188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c53ccebdad8075d7597acf91e8297c25fca6206aa2834f131ba8de27f8bf7b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UKTFV2502236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13a1f7629098aed0029ac527e57fc0e3637bfefc3a540dec9f5c87e1cd82533. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/UKTFV2502237.