Ryan Jerome McCartan (born June 14, 1993) is an American actor and singer. He is known for portraying the role of Jason "J.D." Dean in the original Off-Broadway cast of Heathers: The Musical. His Broa
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 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 0x9f6f433a88866742359fd682185ead4d21cda3177a3ac97d3dc4b3731437b21d. 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/5d98fcc7-522e-4aa1-9d8e-4760f673ca5a.json and https://artists.proofprofile.net/proofs/artist/5d98fcc7-522e-4aa1-9d8e-4760f673ca5a.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 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 0xbd77c7ad9d81b2591867f09490c8c36abafd05b02a14e7ba916b501cd42918c0. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/TCADN1895674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c94fa5605712bce149d2e27e3de8e7bb4cd542261052416e33675f990ee2b87. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZFYX2188200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1b4f823c62337e7701fc967ddd404de8d7e075fea4ac43a065605b92e06ca7. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZDA72197239.
Heathers: The Musical (World Premiere Cast Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafddd5f4d118c78683a11abd397e6a883bcd75b39c5bdb585d0c11515723ee22. 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/US6W61422238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ef2f99ef6ca9f0fc7e6ab9cbcc2fa28ca1d8f0bbb4c7e6e01acd4885863655. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/USC4R2105278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493817ce739718dd80b5e000736bcd7a53862e120b805c0c662a1ca80d94face. 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/US6W61422225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48de7c474fd8b47aa3a4745f7ee281f4bfd7382cd8816ba1401f359c293595b. 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/US6W61422227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa402b3697c517254f5519999c9f9930700bedea1bfc8d66dd819be48ac6cf165. 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/US6W61422230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41601df1a87c51b08c26a5e11fbf671dfd1a2b99772fef8252ac18bc4adeb41c. 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/US6W61422232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f24c0d2bbd209da24e9d5ba6a2b30f9d13c4e01180f30ae4de4aecc5957c9a. 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/US6W61422239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7b463afda67705c144b92bb3be4c1e88ad3f03041b4d6a7ee0c8332ca673b5. 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/US6W61422240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af1fd3911b2873aa49931be6edb91cf2efbb79dc25ebba529d704a4f2ad6ee8. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/US6LQ1500066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaffb337f0d7121b1a790b0fbd6b68fc5b7613125bb24299a6bd487a35b0ae9e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US6LQ1500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf703a6ca039782292596f53ba7180ba80356a6588cd2d5bae26aba4a42468f00. 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/US6LQ1500069.