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 0xa485a8bbe3271e9ae7c08d25be23fd1b2f1b9d2a971e81889b06c72bdd9717ad. 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/9301313d-2940-45b1-ab05-bbe287f7aee2.json and https://artists.proofprofile.net/proofs/artist/9301313d-2940-45b1-ab05-bbe287f7aee2.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 0x2515b7aad1c215be0886716137549e621c21a940ab4bdaf6e88f17d7d4988054. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QM24S1922985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd25e9347691f14a575ea6db11963de70bb65c5062ee00374a7ebbe09fd38c58. 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/QM24S1925035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97498c1a57fa155e432d3b23026aaa19b477d2fcad6a464c72150a0467f4f25. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QM24S1925038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b6e4b2e55d23bc9878f7ee95797bfa9644e75eef172a72728e61c1cd89e1e9. 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/QM24S1925039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf00f334fa27f40fb14db472ef2d06f1d48961cb59942f065d4df028ab960c36. 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/QM24S1911701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169d56b093212b98d190091c771f116de195c8639d70f0022958d81c0d1f3440. 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/QM24S1911702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24403746391575f7a6f34db175e844623becfc57686d01418b0626459c773c2. 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/QM24S1927450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24403746391575f7a6f34db175e844623becfc57686d01418b0626459c773c2. 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/QM24S1927450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2515b7aad1c215be0886716137549e621c21a940ab4bdaf6e88f17d7d4988054. 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/QM24S1922985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8581aa7db2b9f851efbb00ef005e89af16e636848aeff249f22377cafcd6da29. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM24S1922599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd093b459572dcf3df0d500f057a468602665bf3aa738657f6557a5233c3166b0. 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/QM24S1922600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f211880d67544de256ce2105adb7b7068b54871f940cd51e95a390274bc68a. 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/QM24S1922601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833aa9645f367d35722d184a460a63469be10036c354d9f7d4edbbfe681e7865. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM24S1922602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54efaae1f17da84de159548b69b4bf7a73efd8ae0ae97392ebfc22af95d40a37. 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/QM24S1922603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595dd20f0fb134326200b4eac428e5efdaf3847bc6204585c387c5065934e2c7. 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/QM24S1921690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb916a56443f72228f4d5fb44c883ed0a8ef0a27b222e1145bec6166565a776e9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM24S1911873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd093b459572dcf3df0d500f057a468602665bf3aa738657f6557a5233c3166b0. 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/QM24S1922600.