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 0xf55f72290ffefbbc1f80b293ac08343dff5420cfe3e5225a46941c0a5f48a8a2. 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/55351f28-c2aa-4916-b6a0-de48fc5ad8af.json and https://artists.proofprofile.net/proofs/artist/55351f28-c2aa-4916-b6a0-de48fc5ad8af.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Haunted Life Of Jimmy Donn - Volume 1
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 0xb29e117b86603ea86dd6a33b04eb5f65d87fec6188553864c6b1e54b9f3a80dc. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/USJ3V1080773.
The Haunted Life of Jimmy Donn - Volume Two
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f2a009ab98fd5a48b808bb3c6e7439b96bd26f29b94fbe301bf0fd123e950a. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USJ3V1188686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffa9c76ee56960b18ebdb7575e90051db8eb32af8f20af1de61317613a1cf0a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USJ3V1818703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efdee15fc1a94cba8e37360d24f91580255d87fdc98e8d2970f2673f01555df. 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/USJ3V1818716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9c53e8280963750f6920a54ca5f5ae4055d952a473de3fcc3579329f0eaf24. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USJ3V1818701.
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 0xa69f456176fc1f0fa978016b0a9298690d8b8f56f8be3a3216f2564744c4d4cb. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USJ3V1818706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8eaba9c0f7a2e196736ecccbeac51fd4ba3d643f90b76a0bb8cb572f948123. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/USJ3V1818708.
Save Our Children (Sunday Driver Part II)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa289b82e9a0968f7172ba688f019a600d117339e1c2109a771c112d0c8f08e28. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USJ3V2012518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e53c277f9c2022233fa3faeb0f04dd871c98243b56a34d19f787b7603cd7a5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USJ3V1466437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296da7704163ca93422ca3ec09ddbb8899f65c26be3e0eb1735c3019b3961977. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USJ3V1466446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa719cf0b085a63a5efbe70bb3c918ffcbe0ca5deb55c801929417e385569371a. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USJ3V1466431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebda5dc22fefd0512dcf9b874d8f54c0280b8bb1b540b19157ee19ca4f219f17. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USJ3V1466432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a1053888367af01770c42061c5fc6cef00b0bdda9aa9a2db9b0c352340072c. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USJ3V1466434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd574c66d5d1c03d135de32eac9e1ad2534ae46ff258305c549d394617b347382. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USJ3V1466444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f2e47740c1478a2b03c690e36c61c5f50a4829899ea724d50a4a44832c326b. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USJ3V1466445.