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 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 0x2db5d69149d733abb0a21ce83a265166f85dc432f72da29da291d14d35720e7a. 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/d24767d2-6fe5-4907-9d6c-bac96584282b.json and https://artists.proofprofile.net/proofs/artist/d24767d2-6fe5-4907-9d6c-bac96584282b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Party Like The 80s (w/ asteria & kets4eki)
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 0xbff5e65c5edf49f14ce5e13cd3ecd74f7366abb607b989656a47f8c8a6304a95. 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/QZZ4J2400185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d959650dc7f9155d35f2a67dadbc20892d62efedba62c3537092acd8d79155. 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/PL2B92400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba7d6088af6b36d978b1694da6ab814d72a51e0bcc45abddce90c6112008128. 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/PLS282300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d959650dc7f9155d35f2a67dadbc20892d62efedba62c3537092acd8d79155. 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/PL2B92400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475794d9e7e5ff349149517acec34291391b739690b36d2fc84564493a2e6563. 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/QZK6L2332398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4b3308abada6a63b11c38ae102baca455aea6affcecb4e5e7ed24aeec445d6. 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/PL2DY2302191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79210cc51c10e49de21b02edf9c5d419dbc0f7273694af21598c08d51f86105e. 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/QZHN62337627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1360d859f85a5f84cc50d45c33dbb6bd64eee7d9d3b235d6e03ceec67e843e99. 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/QZHN32370141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4d038a600ca435a4e1f78af71d30d5cf142e3acf018e0045a2ad7732301398. 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/QZNWZ2292929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4c6f1ac30dd3442588ca2e1eca42779109635757132419c0e1b7308cd1e528. 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/QZNWX2243105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9f6338bc86f5551b55a0a6bee7a5f7d0f7b3bbe68a202fbff6fa445c44d271. 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/QZMHL2230056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb153f274b7c209c77f5265739bde23e2068595e7185324ea2fc5f3b8e864f05. 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/QZMHK2293524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1800ce0c8cf88b0e8ed67ab4940c2a2869e4af296992b0646d3e64d1eb89c2e7. 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/PLC062237682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c033f5b45438010d2c65c620d9461785980e5c9a413fd3191f512b890b07b2. 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/QZMHP2327826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b37ffa2989a0cd9d4921e6aa421f28a768c79759f6ae893057aec2627e0ee49. 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/QZFYX2398324.