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 0x391831de128d227e3c50dd47eccd4c103291e0da487b260d592ca9714f413be5. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cfcbbfcc-93f1-4b55-a694-19fc1151fad8.json and https://artists.proofprofile.net/proofs/artist/cfcbbfcc-93f1-4b55-a694-19fc1151fad8.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 0x6a13cc9aa759771a2a8e2e82b6129bc181115e2d63b943dca52091cd7c4f10ca. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/SEYPY0900801.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3cfd262d62c3e9ad316d04bac2e69918b4e9d388cf85c05bc51330bac6fec6. 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/SEBGA1400423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec1454af3cf1b91f51744117eada2f3c5649d0593fd99a9ef9489b9b987d4dd. 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/SEBGA1400424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b74a1db37ca7f224cb205c08fcdb19d43a2c795e96aba8e710b98ceffe545b6. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T08:44:10Z), 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/SEBGA1400425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91be1a8aeeccc905b0c4df4eb387aaf0d11eeb72322db7915ff31ca92facbd9. 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/SEBGA1400426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733ee434432548235e01b2ee78c899bfc8e4361fcca70736e491d0741ece86fa. 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/SEBGA1400427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c6284a7c36017319e4e174dd7d2e51b0e4966211d131042f2d619cce752a16. 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/SEBGA1400429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29c61a15a6bde6829a15d5805946a57a7f79c070a67f64c05e5e84c7dbcd219. 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/SEBGA1400430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1589300def47d3226424dff20244cdc2cab1abf55ec5386e015823ac750c6deb. 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/SEBGA1400431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa2885f4de206108283ec2f7def1f2114434f515a9427ab807de58ca2594245. 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/SEBGA1400432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7af910ad4429f68d68c0d80e0af3cbd989a95ca47db3b0286eb415e3a0f436. 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/SEBGA1400435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29424877237ee3d27785d464c965dc5e17df377ae113e4bb068e48c1b041203. 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/SEBGA1400436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa317396b8a806a5fed78cf8b30fe721d3a6261c0ee0df5800e8e99f74a2bb86b. 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/SEBGA1400437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449ba2ad93899e1c755744bddb47fee7f74f03e89aed223040a4fae7b366bd8f. 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/SEBGA1400438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ddb710bb73858ca802412c1b0a5c75a318337fba984172e8de64f8e9dfec04. 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/SEBGA1400439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b9cfe21eae74ec2161b7f32ad5049690d177b3c9b2d46517f3245548db4dee. 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/SEBGA1400440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080aa2f629a8b69097bc93d175da48b4d5476087a3b0245e35b388b17a7ac394. 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/SEBGA1400441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b93aa51711c9318ab4ef248a0047728898710c7e8a63793c3b8647f7c601837. 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/SEBGA1400442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9313f21356139386e3e6fcdb56e85045e0aa41abf7bf125c9f6142efe0eceb8. 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/SEBGA1400444.