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 0x29b7ecc545fad176af0eabe5722077774e688899a290486d5ae422f7c0a0eacf. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9e1f0c6c-0dc0-4de5-a8c3-9b3e6fb73ee8.json and https://artists.proofprofile.net/proofs/artist/9e1f0c6c-0dc0-4de5-a8c3-9b3e6fb73ee8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hair (Actors Fund Of America Benefit Recording)
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 0x24e6b709f30ef9d027b22ba659f816420b9c930d8d8168ee111d09806bb8b9a9. 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/USSK30519601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5e14dc3516fe5d6697271eecf3312b10216d5f4be41dd5688ba4cd6ab42cd4. 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/USSK30519606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50fb3b0dfc9eb440ddeeea0a9cbc7ac53a456d541be31e60c2a1ac0300f9db5. 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/USSK30519608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbc040820f9f7e71aa80a81a4e36c9c444809410734cc33558e95318a011bec. 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/USSK30519609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237baad79ee9a67c2550e3be75c4632142b95fbdec1b31f24b8453afad06066b. 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/USSK30519611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb79a6124795eb128a8099b7dade308c280b773e5a81a91567cc16c2199f66f2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USSK30519613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba2e9add5e2849d9ff953c4a0bf8d1a4c5f088f965766841c0bbfbc6dadb838. 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/USSK30519619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c932f10f2fb7a158795f09f6a642a0ca3a334b384238cb530efbf8c3629ab02. 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/USSK30519620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d94c4cef785e5238ea932f525f631d985cc5796bfe1e21c1301b7056636e364. 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/USSK30519621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4a7d237af3a5e7d7d40a2210bcde79cb3b15147d511d4b4d72bd612fa26f2b. 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/USSK30519625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446646eb4ce3759412a4da0d4f081791f0f5a3f5671eddc8d74beb8b60040a97. 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/USSK30519627.
The Flesh Failures (Let the Sunshine In)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae760b3c10b9313aab4dcbff6c046fe01f63395dcff64b77e1976251c77fbe1e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USSK30519631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546355b5e8509b112bbaaa9e463d24b5fea6d2c7042aaf9c01bc433d43fc9746. 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/USSK30519602.
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 0x3db9b41e9df4d5ab727255d17f50612cd3555b14ae46c2164e49517e11ec2274. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USSK30519604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2f144a3d6a1c34c82cdf158f997d03d8b05ab35b428279388013ac2c7e2a70. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/USSK30519607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7d7afc7542a053b4636eddd4b4a7d3adaeb31bd38a4b2be2651e9b999f2728. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USSK30519612.