Michael Tolcher is an American singer-songwriter who blends pop, blues, and urban grooves. He was born in Front Royal, Virginia, and has lived most of his life in and around Atlanta, Georgia. Biogra
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 0xfdc30996a7d6a70089b7d9d324a53371f9fe5002cc2417104a7839767826badf. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/afbb62c6-df6c-4356-adb9-3b8b41ce0b62.json and https://artists.proofprofile.net/proofs/artist/afbb62c6-df6c-4356-adb9-3b8b41ce0b62.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 0xf763720089d945a5a176d74901a8ab7e6a04bafbcdd3bbe55fdaa5ec30e75f9f. 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/QZDEW1800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2bb9cac4f1dc4bbeec78cef7bb50732a5d5290a2ed3a2c5d1773bab2e2f524. 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/USOCT0400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89aed25dd511c2800359d0f0e62c91be2417985d036862e06fb628ac7a877f9e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USOCT0400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57dc708c92de37683aacecfcb3868b9d5ecd34cd4b0cd1534bdf3ca0c072690a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USOCT0400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4432e139390069f07b145401ca9ff1be9ff1c08b4195e71310930f32fb6b55f6. 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/USOCT0400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141f5981fcb1c5104b87e04a860f891e95ab4341c75b7c176c4378a9459d0c1f. 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/USOCT0400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33387512adf539f3a3a95820ea5a7296fa5339abdfa4a9e493bfd2cbc6590ad. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/USOCT0400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4efc0a27e2a8d7f783c7f36ddef5546582b0d6b5d7c5fb84c72c6efe84f0cb. 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/USOCT0400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4a846572471aca875c4bcf1ad86815398a72778eeb94842cbcbae2dee0464c. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USOCT0400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4c2500a33c3d08239cb1ef61cbf6f6c51ea647c34d75ed33d758f22900003b. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USOCT0400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a268499c8241d750fb591dcfd94892ff0e96166c99224518ce22a21b2dcd50. 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/USOCT0400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a5944e65c713201f68cb5f10da66ab602a43cd2ff689829ec2dd21011dca64. 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/USOCT0400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c98c7fde74dc709960af4659426b4a25b9d0ba58d03a13de5878783ac8e289. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USOCT0400026.