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 0x0b51de0127cb99d5561b17ed81b84de97601b9562163c7ee9af80cd2ac109da6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/76933ba4-7d2d-419c-93f7-46ccdd8f68c3.json and https://artists.proofprofile.net/proofs/artist/76933ba4-7d2d-419c-93f7-46ccdd8f68c3.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 0xf87c2cc3006f1909d5bba7b3311d0a9d32dbdde97212c55a571083f99b0f1cec. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/TCACN1687587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0fad22ea85cc8b98f5add9752dac84ae8dcbe3dfbd860e9eef64aea4b0f38d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCADJ1756145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bac9721bb4a18f883b8c6f1baa1ee68adc030390a8ea9e45a1f3eb5c53df087. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/TCADJ1756135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97186b128dfd0753a22ea6448d75f817e25439ea6aaff46a09e08cb9172cdde6. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TCADJ1756137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0ab72801446ad785dd392c9532dcedc311360b1e1ae289aef2cdd44ea31326. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCADJ1756138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab2eabcac5cd77db6f43e7e0c344cafdf056404323c3c4b2326d21ffca07130. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCADJ1756142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eba532b34ce4e661c09a61792d65aaac0328ed82dde12327232c6ca232cc851. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:40:30Z), 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/TCADJ1756143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ca421b74e364a63ec315afd5b88006c7e2e7c13779eb5c9ef458b2c3ae2f30. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/TCADJ1756148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1091a73682164d7d9b8352c9730ea0d3f13209c376472bb5577aa491607a7cd. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/US2762093591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62cb0ef271a42307d431f85f3a19add7c79a103d030e280a315492338017053. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/US2762093592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33dacdd97bcc8c1b5695ed9e9ae38d3076b42c866431e5bcd3f0b7dbe15cc01a. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:01:02Z), 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/US2762093596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7127c1c58930e386088803d92e15ea0c90d249fe71c64ec09bbc4e5d40632fb8. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:01:40Z), 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/US2762093600.
Irresponsibly Isolated (LIVE at Roughwood Studio)
Irresponsibly Isolated (Live at Roughwood Studio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdc7515f5058b32ea5f7e8b379a2781d556f6efc25fdd97a33c25d70b4cb925. 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/US2762093775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56618f03478655fc2ff7f1cdbce1ed9d12a4a0bba920d9a12e842b675139fa5a. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:09:41Z), 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/US2762100603.
Play For Some Trees (An Acoustic Song Collection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3ce7f6739017d23dd847a8005abcc3667dbcd05e1161d35e1769705d8d2320. 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/US2762303747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e49d9721b6fffa2e25e110365f43735587af331b4239fb9831b53995cbe326. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/US2762303752.