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 0xf6451ef3ff6170a035a930f9bfed8b72ab917d25a2e1839c0196a24e7deef71d. 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/96cde6cb-16b1-453c-9587-f2e66a5415a0.json and https://artists.proofprofile.net/proofs/artist/96cde6cb-16b1-453c-9587-f2e66a5415a0.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 0xdc4b8d759f427cea263ec5f734adab7aa8124f53acafed09aa501ec739f8885a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USBN28400034.
Midnight Special - Remastered 2007/Rudy Van Gelder Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355c39e79e1d401e9209089fc6b9f75cf040c12c39e5947ea1abeb177f9c1da1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USBN20700601.
A Subtle One - Remastered 2007/Rudy Van Gelder Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95bc3b6d5de6676debe45b5e50da39b1bb74730d43a787a93db48447c87e866. 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/USBN20700602.
Jumpin' The Blues - Remastered 2007/Rudy Van Gelder Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd0c9f83c370976f59d54ffe11e3e344e2a2e8bcebacb3aad7f5094cfca6ca7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USBN20700603.
Why Was I Born? - Remastered 2007/Rudy Van Gelder Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6233c01d4c4f352bc674b8f6c45d58976d12ad390a849406b5296e70a6e201f6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USBN20700604.
One O'Clock Jump - Remastered 2007/Rudy Van Gelder Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdb0dd69c637c4356d87e6100d07caacb830b47e77cd8987a24d75b6f4b53e3. 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/USBN20700605.
FIP, Vol. 3 : La playlist qui rythme votre vie (La sélection musicale de FIP)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7a2fd6493af3ae9e4356ebb940f94446ebd83eb85a8b3c4984d99d3ed8cb93. 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/USPR36607109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7359d9682984b4fe14f95fd223e981fef349e293ef5b2c28594b70fde62aa2c5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USPR36670165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe506dfaf7d6a39638c69f0226439995d1df5a98c8d700350d10bfc02bf8611a1. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USBN20200387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3221eca235a524b7b7a91d5553867cf832e853daecd7fbc3d24bd30f3690e8. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USF096400100.
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
Lifestyle2 - Bar Jazz Vol 1 (International Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3823b8b22fdd0b878ee004066a2d16cb27469b3f60cc48fcafed14403e6c811d. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USGR10000870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445cf56f97f2148570358c5530014cec23337866f7c2ea08bf1d6b26aed6b6a7. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USPR36386878.