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 0xd72ea4f6f0a122d2806a3fa0fe570d95907ecb63422ce1f0163dd12312ba3a09. 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/da096031-5804-4d63-9b0d-bfed5decfb4b.json and https://artists.proofprofile.net/proofs/artist/da096031-5804-4d63-9b0d-bfed5decfb4b.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 0x08c1832e5276ba987deab1755c2180c2f15cc6e676bccdd07b98c17955550dc5. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:00:09Z), 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/DEU230804246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccee84d4ff0acff77f369f14a6d5b5f0b59fc9392b410e6ecb8c7a720c17f8c. 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/DEU230804249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560ac7e32fbf3c51bf502453c0de55f7d8e8450e009e1019c56423830014b027. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEU230804253.
Mykonos Lounge - presented by Remezzo Mykonos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2628eca516533e7ad0a75789228061d05c16219ccc8f63871a6a4b1e742c32bd. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEU231104344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c0a717ea2839369fe31104c9e8699edee84415b4972e077b3241b432931760. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/DEU231104349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d20b61570f54797cc17697086a36a7ad733a84c55c93a9ed6f2a222cf58da4. 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/DEU231104352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5731e0872e71113797a81128ae2b62ada348f104081c067a5da0a6704ea72af. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEU231104357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa884b7322daae4d74f12b32b9780d8a106bffd898af40ca0c3bf1ef79f8c64. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEU231302406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e8abc659a35c4ad9eabff87bee2c7972128839bcb200648ada474809d2573d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEU231302408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405a22b6fb7eb7bcf2f481eb8b9269e04772fbbd62b9488b2360e25b7da16cf4. 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/DEBL60609064.
Candle Lounge, Vol. 1 (Compiled by Henri Kohn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfc5a5edffd1a382944e15e65213cb0129ff7d194b920e10879f14d9948594f. 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/DEU230804257.
Café Solaire 12 (Soul Emotions for Cool Funky People)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07ff69a8a833eced13befcbbd19acadbefea596a5b759f21638a0775de1c5f9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:28:01Z), 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/DEBL60723522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb48e7b7d0fa210861895f47625b4b9759f7b83eac7958e36ace9fc02dadf6c. 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/USA2P2256318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035ac511794d338b77063236940b7722b464c19f8b1663edd9f04c3a5ddac156. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:04:22Z), 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/DEH741913508.
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 0xcd836e95e50189ae5ecbb5a9c382749db823039bef49c44d091e3dbb86bf6f20. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEBL60609068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6818ec4493eea1efbedaab6cd266c10518516093b70cdfae7df038de9dc7a8e1. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/PLL591400098.