Cormac is a masculine given name in the Irish and English languages. The name is ancient in the Irish language and is also seen in the rendered Old Norse as Kormákr. Mac is Irish for "son", and can b
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 0x94d468688c6f4b31ef2d2587abd4830354d1d6da665b85fb71b373c4d6510ba4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b614ff53-a769-44b7-a4e2-5c5634c6e1dd.json and https://artists.proofprofile.net/proofs/artist/b614ff53-a769-44b7-a4e2-5c5634c6e1dd.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 0x1c9730cbb01ce86159a263533378a6cb25c8c735292c3f273f2e95a1e871a736. 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/GBUM72004685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563d7c085a10d3f066c7993023b42e6574c3efab55c6fb9a153e8ba53e29fb34. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBUM72004689.
How Can I Keep From Singing (arr. Cohen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62760c10b5a5cc38112d42180e35be8f8c4499ef6dc74d34beb7bce906a280c8. 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/GBUM72004681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2708148118c3a724602cb115b74dd0a6b4ee3949358448c78b4ed811576be2. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:04:24Z), 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/GBUM72004691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69d089e560f5a0345a9524e0f1b123861202bcd6945f2fc0139a01cb1c25e8c. 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/GBUM72004692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fca4cbad0ba5038f4cf1d2acac256a23d2b13fd786cf64dda1d5788ccca7859. 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/GBUM72004684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1a9ce4e3f0658240f4b95de7e3d74bf38849aca6bc36ca9b5078e3368235d5. 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/GBUM72004682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a954eaffd4a74ed93dd561f10af3b22734606a1fcd62e7368eb113c6a39147. 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/GBUM72004690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6d5ff926a2e8b9a2c0e057158c6fa577a42e61c797d44d42fae0362fec8e39. 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/GBUM72004679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c183f4d0d4a244b558b21d2a7ceab41e0683760b7104b6b9d6090bf51b95088. 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/GBUM72004688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c12cf318232ff86cf4b128567e1c4d1934a06da0ae3ebdcc5b841a7e2241217. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBUM72004680.
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 0x6754dca714eb197057fa9b69d78bba94375c09602fd77c6d76332512d5275ce3. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBUM72004686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a662ab51f7f882cb49dda45b416a562229c04c3d8f9f2048b344ac496be9f4a. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBUM72004693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9b7c76c985f571b6659021846ebdf96573e9f94cb1ee500ca73f139bf2d58a. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/GBUM72004687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f44a27c2fd44c303fa0eb32895af0fae2681b415c3c08f76ffc5005c612814. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GBUM72004683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261461d9b42f8166b7569768eecc6ac9cd79f276cfdf1d762227eb9772df63d5. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:40:43Z), 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/GX5QD2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9517d1cea14853fd7c10efd3edd109752024dec265a230e1c65b2328943e9eeb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GX5QD2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd451a2b7d013aab2b2f5efc7b27402915d160ee515f893fd6b485304f87839d3. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GX5QD2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd820af8fd1fbbd85d55c2d511b4e67ae57410ee4cec1f904a0cc7bdd07a6dddb. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/GX5QD2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82a84bef9fff3415f588734aabefbed40d5260ac60ea3dbd0e749810ed1b0d7. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GX5QD2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca85fdfb1ed2fdc29a53698d698f9bc1e9d216884e72148891e19e904c4e415f. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/GX5QD2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa66262d70dcd0e955b56024c4bbeaafbbcb55bbd3481b9b4cac978d7d0efd80. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T18:23:31Z), 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/GX5QD2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca85fdfb1ed2fdc29a53698d698f9bc1e9d216884e72148891e19e904c4e415f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GX5QD2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb079af9bf71252aba896ac49444eada87aa5353bcb40eb88a8ddab0af1f8b0e8. 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/GX5QD2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdc6ff19437a0ef827aa2ebe2b056bb1bd93777fd74202d6f8e8e8c776c82af. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GX5QD2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb079af9bf71252aba896ac49444eada87aa5353bcb40eb88a8ddab0af1f8b0e8. 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/GX5QD2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e6c1286dd118689fe2a95f3cf69880befd6ee5a54dd5ac502693c4ddbb3790. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GX5QD2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5da600981adde8584e30bccc6dcbfef827350ba33c9dda113f6dee111ba8c6. 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/GX5QD2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9165a241d62c02a67f8e32bde6e3dbbd9b564a1cdd8b44430a4b0c70640b64. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GX5QD2500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9517d1cea14853fd7c10efd3edd109752024dec265a230e1c65b2328943e9eeb. 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/GX5QD2200002.