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 0x76a2bfada23793c386a55a08a97a9f85c3b19f862af5a1be38d31defda2f57a9. 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/a2622bbd-8494-4965-9d6e-c43a9a9d0e3f.json and https://artists.proofprofile.net/proofs/artist/a2622bbd-8494-4965-9d6e-c43a9a9d0e3f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Learn English Podcast: Tips for Learning a New Language (Minea Season 1, Episode 1)
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 0xc3e8a4917d21205d56fedba727e4a184b58cf4d083f6c43b2c94b21ee1f1e621. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/USX9P2022243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0b976bee6b46c78bf601ccbb6cad1e69df2343514459474b56848c71217fe6. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USX9P2022244.
Learning Tip 1: Don't Study It, But Study in It
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e9a15a9e9df524055c6ae09ea4c670421bf2d660907fc19d1f04eced5ef000. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USX9P2022245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17195be4915941577b956e305b19dbd04fd778404aee50890683a6f17a160b3f. 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/USX9P2022246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a6dfc140cd1f08e81212fd938b1af424faa6c93d6fd112ebe485fcf81cac8d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USX9P2022247.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418b7d53416f9c5e754aa60f3488bdf112cf0d1993d10700afb79d7a4d1d222d. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:45:02Z), 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/USX9P2022248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32e477da7f4f4b5e4ce0aeb90400ca7ea680b553dbe25fd63c546f95aebaaec. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USX9P2022249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679723f711d4a3344c5f797e3c5d909469edaec52e652c29e18fc654d0062f8e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USX9P2022250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc485f686d96229f988bef05aefaa1b78c89867aef2a4a06c5e1c90423d1be03a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USX9P2022251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbc92a84d8e0fa3295bc555535587209854cbf214998f3cf57cd2ee32e40235. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:59:02Z), 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/USX9P2022252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d48b74830a45df0d4a9bd37b18d2dc78244831206be0429a1176f12ef31258. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:32:08Z), 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/USX9P2022253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0956bc3505f9eb2cb952b26c68bf6563cb3acb5841aed4582dd06baca475f1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USX9P2022263.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd911d3f0eb48bf59599b337e43a5fa034b50a417e67daf7f4440e07c4577991. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:41:20Z), 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/USX9P2044243.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60752204693b5567f7708f06f931932ff8dca31bd4c0a5f60229016614699aba. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USL4R2452179.
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