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 0x94fb5ff9f96783227192eca9c32cde657674d1814ce83d9754c4278afe449298. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/066a9123-a456-4547-ae2f-f6650e1cab63.json and https://artists.proofprofile.net/proofs/artist/066a9123-a456-4547-ae2f-f6650e1cab63.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jewish Folk Medley: When the Rabbi Sings/Hava Nagila/Shalom Alechem
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 0x7f1d9fa531eeb41bfd28bca5214c35c978f694a86c600d2beace391117452577. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/US25L0902067.
Theme From Schindler's List/Via Dolorosa - Medley
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6774ea90ffd56efce1dbab0aece8c27b8ac02b81a9773c39783afbc55fe000d6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/US25L0902068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30de19398cfc5cd35e8140ff59200e57f3bcf62cf1e07a272b642f59b114a2a. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/US25L0902069.
Sabbath Prayer (From Fiddler On the Roof)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08cbfc812a0992772e0e845caeb86e506352c13ddc1f6fe42b866c4568b45497. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:57:47Z), 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/US25L0501079.
Yersushalen Shel-Zhav (Jerusalem of Gold)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3104373615ec1ce4281380c6144a7af65f12185e3206c79691cb28e67e2d241e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/US25L0902071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa811e276a8ab82d9df556e93dccba0597abb0936ab5b8e88f8d8324cbdb452ea. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USQG41300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b2af78f39fcc1b272affc97a5acbdc9085615054cf936f2ffc3a7632010e84. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USQG41300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd135db3b85dbe7f773686d11e87137a835fa0d3077cf79360baa566a2bd299e. 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/USRDG0226576.
Spiegel Im Spiegel (Mirror in the Mirror)
In the Morning Light: Peaceful Reflections for a New Age
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd135db3b85dbe7f773686d11e87137a835fa0d3077cf79360baa566a2bd299e. 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/USRDG0226576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a498a1cdabbae6ce667793cf32a52e07be8bc6f0f39afa3fe69d4a7c1ee22c9. 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/US25L0902400.