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 0x61630d14e2b9d2253a8b4e4076ca418e358b7855b0e51cd5d45a4502cac10c5d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7332c86c-409b-44e0-9a3b-8d41803af2db.json and https://artists.proofprofile.net/proofs/artist/7332c86c-409b-44e0-9a3b-8d41803af2db.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 0x962ce22bcfa28954ce5f8fd1c294923649d0088dbdd8b69017cc915435cf701c. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/USDC39500055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e6c3ad0000445ca3962ad18e7a972ef00a19a407e806d5868fa69c74ad33c1. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USDC39500045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02de9055d110a4e44df62569456c2c334a4e477d902bf408a0369aea23887dc9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USDC39500046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37265e6efdcba5470cef2ba57495ba09e52d0eecd03c2bc0de0ed6827249dcb8. 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/USDC39500047.
He Aloha No 'O Honolulu & Mauna Loa (Medley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6555f24197e8f60b3c4c8d04321f5c3b0b5c1f1ea38c6b358571f5f19af47319. 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/USDC39500056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1dfda74a48eedd36ed8844a3e4f4c7ef232af8109b7ce05dfc146bf551edce4. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/USDC39500050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076279d50a06d538addc94ed424fbbb2a8457d6a98a4e61444d2979d17a2f290. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:30:03Z), 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/USDC39500051.
Old Plantation & Ku'u Pua I Paoakalani (Medley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42329e0edbc201c3699ea9e13a48cd4786d41bffb3b2ce6c14384af7fdaa9778. 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/USDC39500058.
The New Hawaiian Band: Hawaii's Greatest Instrumentalists
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dac0d69678d0c87b77604512e3c83a70f913ef3e72671223913fffb670b8656. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USAER0710131.
Ke Kali Nei Au (The Hawaiian Wedding Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc66a8ca389d8ee8a6dc98b65bf54c38ff09256186ea8b14e208dae90a2b4ce. 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/USAER0710123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadec150c68c5e2215e9cb67bb64157fd07eb6f7612bbbe08240df6d293189279. 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/USAER0710126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c354043ffd6d7e9dbb050a1c587b0b9b7f068b207a20949280ea2e0280ef21c. 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/USAER0710109.
The Legendary Atta Isaacs: Innovative Slack Key Master
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14105b8876d99773c564849d727e59c650ca4d8aaebcc7f9e3c765789df4ffa5. 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/USAER1010048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55172874bba510e78045672881b3fa36ad93df817bf44bed01cd810950510bc6. 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/USAER1010049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc489c18c8825d29575a73e7e90257bf4986b377b8816d106062b9ab541553c8e. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USAER1010045.
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 0x18e4ad5198aeca6c67a3b0edeb51fc64f2c14622e63b6b5fa198bf3f4001f79f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USAER1010046.
Maika'i Ka Makani 'O Kohala Moani Ke 'Ala
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3016c337e2b40c92fc3b79208187fd14cb67a27ce36af9b4baf70bf28fc9496. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USAER1010047.