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 0xfbc31a645047c4ba445b6eb196a41c649a096c9734b42e82df308bdf1d73c8c5. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28b51526-aeaf-4a6e-bde2-9717b631aab7.json and https://artists.proofprofile.net/proofs/artist/28b51526-aeaf-4a6e-bde2-9717b631aab7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x56daa6e1623581b3baec555346a9f63a866393a3bb10db0effa15f0ddbf0884d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRY510883219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0c76fb2e801d7d0582b7fe34942d7890fd0f6a9bcaf704887b35ce0ace5ff8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR0W69966155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7aaf55b00d0818a261df840131f8cabf710f4f293b0b9ac04331955d7c459c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR80T1000208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c21622e1b7cc77f1d662fe239fd5a642822ac6d6fba9189ff135d8b905af2d. 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/DEMF31500235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3614f707a1866cdbf7594b7288574564d50c250e637f74d24d1c6cf15abc87. 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/DEMF31500236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bdce0bfe7a47efc043404c670feb900fc0def500854fa0f3ae45eff872222a. 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/DEMF31500237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e58b181b944915387e65497da764f11ebd2b93a2f9a20a66db6c44644cdea29. 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/DEMF31500238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210c27ea8cdb756ad7fe60e134859f39f1ecc090a20ddad189baa31275f2771b. 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/DEMF31500239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58110f1ee83d31f1c26640c9d2200bc33578c8c41343794ee0cccce0cca11332. 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/DEMF31500240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49df33753853a985627d349db806f2a7b1289ec7b59d0009f29ef78a076a9ff. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/DEMF31500242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153347d0bd3716c4d49a6387ab06cc9d0ee511302d06f8a525304d6af44b5096. 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/DEMF31500243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab6323bac013708122cc097b81ca96d5c762716eb8cbd0037c9625ef0cfcb8e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEMF31500245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9357f0a75a45dcbfc5450134056211ccc7eb025d981f094faae40959cd2e0d04. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEMF31500246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc43431e4f365b6e8a1a619e5da35364c2177968e03e8db26c6dbf8205445d61. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEMF31500249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efac90930101cf422ebf3828d1a362685eb3ab4e3b65a0a9cff8298f04d61d3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEMF31500251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c892220ada44aedc02d173c512441c3ce047c10dea1cad2be3cf9823d922f5f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEMF31500253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712101b9c6339430f864e094f273b7fb8673afac680bb8f32d0747425fb2f447. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEMF31500254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc0bc5f866dc9f9636a3a10d5cb95d656e6cea6884b3b144328f2c8dd01bbf8. 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/DEMF31500256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6dfda844ba8366b7a4410639a769b8013420594929a7caf51a772726c8929a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEMF31500259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc328020fff99aa3314eea31370f15c4e86d89af9089ebd66563c3fd69a76ec5d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRY510888048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8534fe89b37494c6a6ad706df434b627bbe05a8c071d166b468b42a311bf3a38. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRY510888010.