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 0xc09c387a062bbe1f191c8eec1dca5ee4f9f41ab67080418ab54c68af49d50a77. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3040ce5a-5c05-4646-8428-bfa1045fe9a3.json and https://artists.proofprofile.net/proofs/artist/3040ce5a-5c05-4646-8428-bfa1045fe9a3.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 0x0b82a5655067b468f5a0ac05e3bce9e511218b57dde43c6c48d343bfc440b8e8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM6P41911041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf795ac60d32aedfe0deab8c84b760b4123951ab8af9e8063e190c875c74ca944. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAFY2147749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd193f61f278dae706e884bcdd2292c087958436b462c804a9fa8613718de2b7. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/UK6822502567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6831c3bae57b89c442d229b2bc28de93b89fa2491f2e02539361fa119df788fd. 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/UK6822502568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6831c3bae57b89c442d229b2bc28de93b89fa2491f2e02539361fa119df788fd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UK6822502568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd193f61f278dae706e884bcdd2292c087958436b462c804a9fa8613718de2b7. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/UK6822502567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41fab92d697f3bdde85032225f9d6e7932ccedb867805fed327b3bf90b38f46. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/UK6822502569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4304cbf0555f4736459cbe7a044b8ef4275cd84b43a78911777b8a08c38f7de0. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/UK6822502570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f7b1f2546860e0cb28c4047ea6861605a08cbdf8f986c24122d11cc0ee13dd. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/UK6822502571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a77d3b6832930b9134a38d24ca63e4904466ce1d61eda2ae869c50347351068. Chain 2 (Bitcoin): anchored in block 958676 (2026-07-19T05:43:13Z), 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/UK6822502566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83bcd54a0b074a6e7b219bd7e530cd4c7128a12fa47a2e59c6ef4a3b807fc8a. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/UK6822502572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532350dcf66f3a1f586d15bc11169b7610b7a5c775dbb0ce0a847f0265e460ca. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/UK6822502573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf8c09919478b45cb4e31cdbdfa607c209adab42237d2d07b4f4c0cc402b63c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UK6822502574.