Roberta Joan Mitchell (née Anderson; born November 7, 1943) is a Canadian singer-songwriter, multi-instrumentalist, and painter. As one of the most influential singer-songwriters to emerge from the 1
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 0x603a939cd5f3dc08fbf17517826710fbbd42edb0ff5a3a43da8f4f92871d8c4e. 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/ec83aab4-1c4d-46c7-b59d-5686b1971e6c.json and https://artists.proofprofile.net/proofs/artist/ec83aab4-1c4d-46c7-b59d-5686b1971e6c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
You Turn Me On, I'm a Radio - Live at Universal Amphitheatre, Los Angeles, CA, 8/14-17, 1974
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 0x4b7a8896d550e562340553b83b80d3572aa876c2b68798997b31724ac74827b8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USEE10301785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9882fe860830b2f26d30cfaa326278206cbbdb898c743ba95d3965c2540879. 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/USRE17000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abecea97770f4b411f9e64f70ade4991b0d542cabc8383b94ebecb4b8094c85. 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/USRE17000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91dcc7f05989e529128c8fb575dc8e36b88dd548c7005ba5054a37430d7d1df. 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/USRE17000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6f10667fd93f78f6f3c219abea8b05c7b9087cc8f5589e8490cecd35950584. 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/USRE17000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890a97f7ffba0741ffea6826410cd6e6db3193c5eec74c41ba829a0b0d206e31. 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/USRE17000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb7f48f9bbe5b0b2e349d1b242fa7dd50d6de723478bc849af1f98588e9ebf1. 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/USRE19600217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c0a6fc6c236d5936f1e33101b379e35d8dc9dfeba038cdcbfb3962e178bff4. 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/USRE17000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fa5d32b99bd56b861a50e82136a9f941c190acee4f80238c477e9e13860f0a. 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/USRE17000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae069c9feb31cef62d8a4cb1aedda27d37a0fa5f5a144ec1bcebf6d41810189. 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/USRE17000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5030b3d9e12c4a3916f2f42f15d60d8900478eafc48d75cd0a9429c561f146. 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/USRE19600222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1f45a57f96801a68b178a29cae9fcd3f1a4446ce4d46d3f01f4b7da833d5e4. 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/USRE19600223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b00c4689b15559a77e8023c6d56cb0a3fe9b3a551fe5aa38beb1cccda4f987b. 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/USRE19600224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0519c30354e2ae4193f9cd025f792054e994891757dba2abb3e75052648111c. 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/USRE19901438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9add238469d492c9f42c899f9f69dada3c5a879454a88bba0b1e00171debe5b1. 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/USRE19600226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc538bcc4e72046cf41863700ae686170478526768dfa2cda441ae6265a58b557. 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/USRE19600208.
Almost Famous (Music From The Motion Picture / 20th Anniversary / Super Deluxe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1574051bdc9cf1de0b52014dd6a4d3f6754cd8c3c05f75c06b5151335b57a164. 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/USRE19600231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5030b3d9e12c4a3916f2f42f15d60d8900478eafc48d75cd0a9429c561f146. 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/USRE19600222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bbc113ec98691d1056f4a6b785641495bb7dd579c2201c2e0ad47f459efff5. 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/USVI29700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f111d119c21444cd5ba58a0397e23671012bb6c8d75f5e3164629cf48212b71. 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/USRE10100255.