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 0x385c8e74a201dcfa18bc72bb1256f9e5951db87e0c7b5e5fdd4c8e88081f7fba. 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/6fdf380b-0779-48c5-95df-ddd59a207fd1.json and https://artists.proofprofile.net/proofs/artist/6fdf380b-0779-48c5-95df-ddd59a207fd1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Mystic Harp: Music in the Celtic Tradition
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 0x2d5bdf20429c9c6e8ff55b1ce7db3b911080af2eb6134a7237803ffd4b0b7035. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USDY41857335.
Mystic Harp 2: Music in the Celtic Tradition: Sailing the Blue Sea
Compositions of Derek Bell and Beinsa Douno
Madame Bonaparte/Devil's Dream/Mason's Apron
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58207ad76cf01954858146506b54aee71e7e0395fb781f0f143a8285b7a3a1c. 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/USBC19801025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150593c7721ddd3a25cf4cf51a14b0c86c0a13413ed9d9d8d265168474673d51. 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/USBC19801021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1225f09343941a920def4676c923add7942520aa0690a7894b35d351bd61026f. 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/USBC19801026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a675f67b036a4ef52fc2fb54aebf8693c6780b6fe762f921395d19c44f33c46. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USBC19801022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e43c401aa6ecd6edcc026938bb230b6616e0db04df56071bb24d9b01b112f4. 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/USBC19801024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960f19c9c06523ab14d7aa89f4c9a9e3f90c7586d51993b645d071c54d9e9362. 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/USBC19801027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed048a4ee93960b32069f8abcd8b48b0774bb0cbea3374c0378ac055a1becd60. 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/USBC19801030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7456b8e01770aa2d8d105ba414b5c9b1708ffa2fc8d7ece47139534bd2ab5fca. 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/USBC19801023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f989063d839eac79fa143e09a1b2c39cefc1e6e261ea77ca6d89ce043557c3. 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/USBC19801028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b1bfa1448b361bb851c74a518f6fdb6ec4b8c24e015ebb4fb34defca0845d1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USBC19801029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afda96db05c7a709e1b611165a07d4cb2ba3868abdadb73dab57367ccd04db7. 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/USBC19801031.