Maria Muldaur (born Maria Grazia Rosa Domenica D'Amato; September 12, 1942) is an American folk and blues singer who was part of the American folk music revival in the early 1960s. She recorded the 19
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 0x710ae8f38a1b01b879edc52e7489d907745a1a04f5321259e4580d76e6afe768. 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/a382a06d-6180-4c79-9dfc-23244b3f219e.json and https://artists.proofprofile.net/proofs/artist/a382a06d-6180-4c79-9dfc-23244b3f219e.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 0x6dac87cc66e4db10d22e857a768c54a9b7a5b3c8ffa3488087c9ec101aa05979. 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/USRE10100265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d078d6304c09a645d31cc07eda9c6663c5f0557ce4346415942ab31f2e90b6. 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/USRE10100266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb288c41f276921e43fe07e2179b920347c560f59587370d3e6496d226654a792. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USRE10100267.
Don't You Make Me High - Don't You Feel My Leg
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ad8cae7ea17c772c6405ad6cee5bfc1af69388d3b98212314e3dd5f705dc3f. 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/USRE10100268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4393947ebac3e65f2f48b4f51c210fa6f4592a581fcea60c8c7ec912880827b. 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/USRE10100269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37640f28555361f5c7cf7c98929cfbd54fc7d8e9b6052cbe7b215c37bb15db41. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USRE10100271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa145b8b4c6c49479547f20b29d3baaca3a680c1eb8bf0a11cc65c8abf96ea2b4. 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/USRE10100272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68899dee1aeb22b6f5acb783bca2ea07be575102f3bf11b929689523bb721247. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/USRE10100273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f365b1a52a804d0ff6209bfb1dc892b6f354bb5e0a55c1830be367ff2f6f5c. 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/USWB10105168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526a956add92e6c778eb3c1b4b02ca76fde7a05e910c11038fcad7db302ec6d0. 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/USWB10105169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a04f9ded6db1cf72d96f7082efc1bca63834728fc17a9db6bfd85c041498ab8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USWB10105171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca443385db091fdc1e9e261cc66239028f88cc54a66a15864784d1034d719f8. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T12:45:27Z), 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/USWB10105172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d064c5fb71e753d882f5d49d937294bcbf9b689549f5cbba2bd6a24d52979f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USWB10105176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd9f7f73d496b53c813f1313fb5ef67cacca7264922f06fbda625517674591f. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/USWB10105177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05048a8068231c506177ea7190f83bb4a2e06d90c552682d6dea2ac69963729d. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/USWB10203251.
Live In London (Live At Ronnie Scott's, 1984)
Classic Live! (Live At The Boarding House, San Francisco, 1973)
A Woman Alone With The Blues: Remembering Peggy Lee
Heart Of Mine: Maria Muldaur Sings Love Songs Of Bob Dylan
Songs For The Young At Heart: Maria Muldaur
Don't You Feel My Leg (The Naughty Bawdy Blues of Blue Lu Barker)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a437173b8c57eb3041476f36417d44d541d4a776ed13de051eb8a1ec773b9c6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/UKNR51800044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cc72e221a8f1b62f52b95a81b1bd8639114991b5e2caf798b4e0720a6bcc7d. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/UKNR51800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad1436476896b6b85bb18c4f1e8b206bb249ca2476ff70b1d68512405ea18e0. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/UKNR51800051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72b0c9783139238852526b5fd9a97b464fde9051deaefc67174484f600b4d23. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/UKNR51800052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796fe4f4072ffb8bc1d13a2217b63f14d526e0df4efaccd189d49af3a85c80c2. 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/UKNR51800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57cf4690ee3101e110d81b3793c5640dde9a60a1cc7c7a7e7e90de7182a5f49. 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/UKNR51800053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe222cb5c7a4908e4062ed108bd6711222d759d41c35624436b6f46f68e9e95fa. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/UKNR51800056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a78ee10780ecd98894c19fe700a27ab2ef6feb0a7b5230360628c5e5172bed. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/UKNR51800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593ebf176b4ecb7db983762ef848bea111b18cc0ad377a7cd5ab91edd74abc8b. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/UKNR51800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3439528867c45519d67fe4b10bb741c929de79a69babbbd0b303eb442f50fb53. 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/UKNR51800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771a7507459800de09a8209817f72e80a228dcd4c0c93993da28aec536e6e1ea. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/CAS432042902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42912a2e50a8b2e561ec9eeb5b1c265d9dce811ee9eb6efa25bfc1f2ca6cf559. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/CAS432042903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe003c83fc84b402942319865f813763cf439856111189118701d500663c5007b. 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/CAS432042905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e765c2c07e2e9a3b39d4ed25730d2e910a09fa0865378b556d33b6db1a6f53b. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/CAS432042906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a5d118ea3b1575a3cb14d9645911186eac899c059b79964dbadc034f9b52de. 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/CAS432042909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771a7507459800de09a8209817f72e80a228dcd4c0c93993da28aec536e6e1ea. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/CAS432042902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152f7db5a818826be1fcf586ed133a4270813ab33292e1dac4927e9f62f6548c. 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/CAS432042904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e765c2c07e2e9a3b39d4ed25730d2e910a09fa0865378b556d33b6db1a6f53b. 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/CAS432042906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a5d118ea3b1575a3cb14d9645911186eac899c059b79964dbadc034f9b52de. 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/CAS432042909.
One Hour Mama: The Blues of Victoria Spivey
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbfc53ced168cc684837f69f2914efdde8873f774c38a89192ab06466f2f777. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USSWQ2406001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a39ca2b52151b8c33f8bb4e2a6d11d17af759c7a21256e49872f73da1bcea87. 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/USRE10100264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc175fc0273b1f49c2f1219416af0bae575f04014856d67cffe6db6b7a141f0d. 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/USSWQ2406013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a39ca2b52151b8c33f8bb4e2a6d11d17af759c7a21256e49872f73da1bcea87. 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/USRE10100264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a39ca2b52151b8c33f8bb4e2a6d11d17af759c7a21256e49872f73da1bcea87. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USRE10100264.