Thomas J. Peters (born November 7, 1942), an American writer on business-management practices, became best-known for his 1982 book In Search of Excellence (co-authored with Robert H. Waterman Jr.) L
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 0xac0f6a3e064a5e1ade1fc82c5d12a069dbb6273f53c11392ef2e9ba3c8870beb. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3bf9b08-1c8f-4349-bf5c-c07cff2d1f91.json and https://artists.proofprofile.net/proofs/artist/e3bf9b08-1c8f-4349-bf5c-c07cff2d1f91.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 0x51f96823fbb9147feb1d5f2e3e1c825e38aa86bf358dea4abb30f4be710c9604. 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/DEEC31810359.
I Think About You All The Time - Club Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c431477d38b8a7d4ca40f06c9367ffb9d27da21099c12f5c88fd07e557a8f7a. 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/GBEWA1900890.
Préludes, Book 1, L. 117: VIII. La fille aux cheveux de lin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc3924c741946218c3232b550dc02c4f4d52391618e5c760c333a8c97993eaf. 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/GBLFP1606567.
Ellens Gesang III, D. 839, Op. 52, No. 6 "Ave Maria"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14338e502bc8b4199d27c20aceee0e54a0ee5d2a452bd5cc88013a734dcd0b7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLFP1606568.
Arabesque No. 1. L. 66: Andantino con moto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66833bf558bee9c18d162966d6a1d5114719c9ae0741bd49805de7c36158641a. 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/GBLFP1606572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb36ff465bd6c7ec0e6d12770c7aa1cd010f68304ae2b390a63fe5800039042. 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/GBLFP1606576.
Piano Sonata No.14 in C sharp Minor, Op. 27: II. "Moonlight Sonata"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40edef45790906777e2c4b0de8cc4d67fd72c28fe05338f9e8cfaedb901b9964. 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/GBLFP1606578.
Bagatelle in A Minor, Op. 59, No. 25 "Für Elise"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349c31c8a76c8fe9870337bef7d7386d77cc3f566de1b380d4d34bf37a3f819a. 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/GBLFP1606582.
Suite bergamsque, L. 75: III. Clair de lune
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83947d17493a7d2621b5fdcb7be1e209aa11268ebf8f9f74001eabe6d3a9f34. 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/GBLFP1606584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a3c355d525d051503da07313d98c9fff64f86632a4b3e05e99a90bfb68bfcb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLFP1604686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85dc5e917d57b8d5d86ba10d5ff101b5503bda28a62b16ea7cd59900223fd60. 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/TCABY1409394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfb75b53eb01e7e87dd757a312b79acfa5d71d44670d157c0f09a88b1b92db5. 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/TCABX1494533.
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