1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xac9adc1da88ed1f3b0b810e9ed4bf8b3529c977645f70745c0a8fae5769b9b81. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f93e28c-c618-4e31-aab5-07c8ed705358.json and https://artists.proofprofile.net/proofs/artist/0f93e28c-c618-4e31-aab5-07c8ed705358.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 → block OTSBitcoinBlock must exist at that height 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 0x7789ad1f9afacc0506f157b0fccc6246fab167c028b074b44c77ce9d336d8d17. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZ6BJ1804507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922ae3d62b44f8def80a813c2f79a3e2dd9b7a14b70303db627109f80145a8b7. Chain 2 (Bitcoin): anchored in block 957544 (2026-07-11T09:08:48Z), 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/USCGH2046020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24c195bffe1dea0ddbf611769373fe366abe47a92fba8925a168c0d5056d91a. Chain 2 (Bitcoin): anchored in block 957544 (2026-07-11T09:08:48Z), 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/USCGJ2074681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe791744e2a0ed7177066e94c9dde465b5ae420e2abcfe25f922fdea4a21c7ab4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USDY42049096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa449317eb2785c89b79fe5549adc2a64312fd348541788f63bc107499664ad83. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USHM82009732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f398bfbe34a8a6d42d1e1c3202ddbadfc23e8e7233274e93d56bfd44ed95e5e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZK6H2108627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520c640067c08bfa09c12ab55a783e28e0ae47224d708f36b3c16a9f87ec3b3f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6H2108630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd9d43d3c5612ca27d8fdea05857c764e11479b6d312248e1b5337f0dc778dd. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZK6H2108635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715377acfcbf51a3e0ed4b1959aea4fceeecfb73b311b168e5b6c75921d4dbd8. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:42:41Z), 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/QZK6H2108637.
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