Gerald Allen (born March 12, 1993), known professionally as Gmac Cash, is an American comedy rapper known for his various short songs about newsworthy topics, including the Detroit Sign, the Belle Isl
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 0xae87bd52c11acfe1e93bd7a50824962d31c07b315a59e1d30ce5e535c742a6c5. 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/50dc4a70-bdd7-4540-802b-fd6c3741e8da.json and https://artists.proofprofile.net/proofs/artist/50dc4a70-bdd7-4540-802b-fd6c3741e8da.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 0x197a6d97c2ebfb4a2051369ec241522461a2abe28745c8fb2122d97da2394e04. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZ4JJ1955977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39ba2780854eb92329c016023d24afa659039eaa562063c1c3003d41e0af287. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZDA71920816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba376c1191ce1ac26bce1a4c9affdb82a945196769fc1f7bec9bb3e63c373c4e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USUYG1301977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a271f4a5c275e08dd5f4f1b1da598a369c845aa75686260f64a456133e500b1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZDA72067069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae0a1bd81af8e3f8beb3245fd068d6eab28752e8b6dca4ffe80859940aabc4f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZES72082650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fbd57d44dd2d44d893a8703e5d0c0cf0f67adb2ab21a34f003fc0aed15b6d2. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:27:51Z), 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/QZNB82033849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe017649d9f00172fc55a9be114e7346f008da6fcc9fb587293d5bb15461d876d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNN32190801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8343f18e05a1eb2b9368fa99ba2f07ab553bcfe630f4815bc613d80308725d. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:44:36Z), 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/QZRP42188950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a9c6e33604877638ac7f68c08f79b830e76c12319cd7414e055eb2cb8f919f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZDA82264630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b7c9ddf67e4da7e750a4ea13b0d321150c5fcc27cf683634837f65f8886772. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZES82284987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f55e376f9acbaec0d6359592ac91438bdeb281dd604a837df4ca66006e6646. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZHNA2267031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc393d3d1e8064837f775928c4dfa138c69c8111b0016be8c0315ff8899c3b284. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:53:32Z), 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/QZK6L2334583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa06ff6ec8051349169b2a797cff3d190fe5210b1cef483dc268acaee8b9773. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNWT2346047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bf6d336b39aeef5aafb9bc814f25857dcddae2c28f2733c37f459081e657e0. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZPLS2302546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f552ca5afeb28cd0751cafccba7bf71ee5892bdbf9794869482f6fa8bfed74. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:15:17Z), 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/QZFZ42490701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56eeefd7be5975ad30f7a371736ebcb517884dea45c296a9c4a9270c12c9c456. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZK6N2482868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad87fe9ec1536072bd1198b52821f8c07fb075cae6ee9602955bbdf7f38b353d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZMEP2412370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00696c1e44b7fbe0f3d2d7517283d5a08e20e7e6e63ced2a14541ad28bd4a5d3. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZWFG2441771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17d70c980e851cdc1f24cad70a4cb0234ce738b08d08c6e3a99b4c75bd3d2a8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZFZ42528981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9d38ca5804abc58db0816c1e7f700fbf8b90c9e8549e4ca6d2666390662e32. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZHN72547933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36f9b84ef86070a863f37966795cf977ca1669ae2b68e851c042577ec38de7f. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:49:53Z), 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/QZNWS2580982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ed5ae66edb3892672129385ee0521ed12c21795e5fc114339a57097d961fba. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTB92501774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35caa460d881cde9203130abaac6555ae4b8604fa17cb3315d13efadfd36c630. 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/QZTB92501775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464ccef154009117e2193f3b4640453f0a8e8d979696b456a64ac5eb302a3c38. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZTB92501776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e294892c58349e8dbb0d3f9d1372f28717e021485c6a1a76e06f8017061b139. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTB92501777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24082f8694c9ef6884e6173759eb181b4602e9ad2c4844df1e1e78405e24db92. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTB92501778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae6781fee540aa0e79a78d8a381fd484df31f9e53703ed32c21afb29779bd46. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:22:34Z), 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/QZTB92501779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecb8de8529e76c7289a19c093c84be93387839056e87b1fb77fa002eb215678. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZTB92501780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27a32a9095d3797ddd52f1d9ec8e61cea7989d5f077653ab7f09e4911f75766. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T14:59:03Z), 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/QZTB92501781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea93a629413ecd5410dc0e35b30e24fb8da49cba188e8f2920b712276183d4bd. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTB92501782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10d831bf62938d8bfbc56fca3233d47500a6d5dde89979aab4f39db8faa01cb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTB92501783.