Mason Jennings is an American folk-pop singer-songwriter. Biography Born in Hawaii, Jennings moved with his family to Pittsburgh at an early age. Jennings learned to play guitar at the age of 13, whe
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 0x6ebcdce34967d4db73ff68ddfe3a4034dca9fac6e8dc9adfa8694c8d83fe359a. 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/35d639b6-229a-4f20-a4a8-d29e9c10170a.json and https://artists.proofprofile.net/proofs/artist/35d639b6-229a-4f20-a4a8-d29e9c10170a.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 0x935fc1078eb39d302d0dc83d572366a8f56de3d192fccc9f1ae8f2abb7eb81d7. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/US37V0212504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee48b0e0b8a06a7c9e2eb39a01e98ff594c2dd1ad82d6841b5016789da354ee2. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/US37V0212507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8ccd664e6b35af8f53b851e01b322b28a3f17d9cfb56ac65fed3f5e23b087d. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:43:54Z), 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/US37V0212601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e2924e54f17bef5e5f712a9d92e96b8f7a04a2e945c3716445d9296db1300b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US37V0212602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1a90640b32c7103311851f71d1efad3eebf2aabe82e434f449c1ebefbc08c7. 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/US37V0212608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7fc43c6e9cf38bc82ca1a001cbd2111ba74cacba2c0d2974ff0b3b7d86bbb2. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:28:24Z), 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/US37V0212609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8cd6522a53f69ea09f3425906a9f2fa098cfa85f1d74013b499f7d91ee3a496. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/US37V0212610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dfe5501c1e08c57bc737f0acdd82cfbd7a1a8f008de1df6549bba6a9dbcca5. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/US37V0212611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d30a67c485514ae3d202c56f940ab490b77ea455bf3f553aa032f4ca04cf2c9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US37V0212701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc34f8188ec4506cbff3c62b2e2b5db0837b4172f11d7c97c82305a7b2f2a102. 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/US37V0212709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5907e12386455ecf2a11eee98ab7d46c58cbcd74d6120487c3267428eed5df56. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/US37V0212710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc87fee374d99bab0cee81c7b014f6741139b55af852eb663697a1ea0e56e942. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/TCACQ1689206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396b75e2fc4a31a59c8f8ca7b344547eaa94e96ad942d5111fd43c1c860c20b4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US37V0415104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f19c89b3fe8755c77d706d08360357da2f4156e1571388861ce9f0a413c36f8. 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/US37V0415107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ab5fc9bba66522188f6cbefe42725abd4314dd7e88aeef140d8e7a5c425eb9. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:50:19Z), 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/US37V0415108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee584cabdb998b24afec5ebcfea76044cd12cad1e22994b2b881cdb1591bf41. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/US37V0415109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e3c27a8ae0e9b4362b19f0cde4a4645a2e2da1d5f5aab1b085720db7cffbbb. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:24:54Z), 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/USSM10600689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2a86faa14508c7f22e47c38af69f558f2981720371a8a85cf2a2dc3f0b7790. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:02:53Z), 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/USSM10600690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6acb693c9d4c2dcae44ba66a625624320b7d04b96cfb167715034dcdbe64cf. 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/USSM10600692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30d4a19edb53997c2b586e54dd814d5a1f08a03b5fadfa5e70bb93b7d5e6aca. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USSM10600694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7937f657913d9ee2b152ede16b938fdb3dd82b381b81bd1ec2bc2ee41830582c. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USUM70810298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936f3ea106fc79fa6f13dc1dc02c7c610d4fa78345356d31a8a5d93ad0afb940. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USUM70810321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c001e88796e3af1570ab4c368eda751aaf299413bfe96dd2abd19e586c8fd5c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USUM70810324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f728141d7e236388e59c190589af75ccf622369b9f4de1ab1f202e3d15eaae. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:43:01Z), 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/USUM70810325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5544fa98048a4d7291ebf88cf43eca557c959e7ee6b1a7ce6c92dccb54963a58. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/USUM70979129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda1e41f15a09c4378d111f73440d3b09615718cc3ab38077a1e7fd424265ce8. 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/US3DF1101701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace3d9b538333a0c75a4383cea0f1ffb400262e988710eaaed71d6025fa6e5dd. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QMDGW1300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcdf2ff0962d000cfb24070070a33f44d272b036c7e65d1f7575dce83a91f3b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QMDGW1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9936f5ec3e29b7488ff980ceaee29d9d61d1e681059dd4eda11c6660675bcb2b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QMDGW1500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264d20cdeb96b8b3ebc7d4ce0ec1bd4fa014f9fa04a2008ae71107ec57eb7769. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:49:19Z), 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/US3DF1803918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0883aa10b24bbfb78040ee894d1ce0a05241a886be54e715b349a4c170236f0. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QM4TX2513832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718d8237836721d678b2b36ccc7524a314e3f6b88ad7c6a8767b2605fb700e35. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUG11903194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfd6aefc611d83d1775366974babf9e9c7d26a0c7e989a1493b5d9db2f0ff14. 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/USUM70810301.
I'm Not There (Music From The Motion Picture - Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf89b95f7a44d2d75638c9f5de2e3942829db85ba224f42e82caba156b611fd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USSM10704363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df07abcf428a780a1a6c3d5c0bbc74ebe67bb633e7debe25970fd93e7037838. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USSM10704364.
This Warm December: Brushfire Holiday's Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046e3f1511935984761cc8a7179368084f3d3bff5910ce9b95658a0fec63c40a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUM70840420.
This Warm December, A Brushfire Holiday Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718d8237836721d678b2b36ccc7524a314e3f6b88ad7c6a8767b2605fb700e35. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USUG11903194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf752532a5abb7dfb5c7b6a3d27a4ba96e611c4c8ced1d07ea9ae12be6ef0122c. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/USUG11903188.
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