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 0x176215ce00766da71e5aee5986850f5d58bb2ac9620185397291d333c0401365. 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/19fa0e44-8557-43a8-9df2-1b7663f82c9c.json and https://artists.proofprofile.net/proofs/artist/19fa0e44-8557-43a8-9df2-1b7663f82c9c.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 0x896b0cd1ace35aedaca89a4581aac5ceb4a4e9507286cb455951cc35bff9a3e7. 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/QMFME2110294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06d2d59c7bba51a34caf36c20a8dcb49200f5496640a423773bc952fb5e2947. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ZA54C2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbbd40ccdb087a154144cdefc2f63c3431b4cc52f5bd3d8ea32e2466a41c8d7. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:34:03Z), 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/QMDA62205593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240e62f224fa48af48b67e60d3e07b0ac392344c76506a4ff7cf98e1ef890e3e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QMDA62205594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84f8cf9c707341851be6ce588cb8c2dc6e282362a2ae7d6918783f6ad8b0e2b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMDA62205595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6356c90767a20169f27c10678a0040bc2617ad81700e3c17a14155c1ad705605. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QMDA62205596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275e922e41d34b201ed0e8aa77d4d1d76e23aacaa0643662ed930272972d033b. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/QMDA62205597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c3f071c76756d9e9cdfc7cd31e7851f7e6ec5dc94a8b549d506886d98f7e88. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QMFME2307960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8a1153150081fd6b840d1186088c26cfe4c17029fffdf342fd76a9b5685cd0. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T07:58:54Z), 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/QM6N22522857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0798b5119c3096e6dc3afc7c78c5d68820091efdf4d7030e46ee56f302dda52a. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QM6N22522864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6419de17788b75859cdc53f3d53c25dfa80d210e1d045e5cc9131f5d687977. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QM6N22522866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f99ae2703bdf98b7ca82e301810631da4fc72f82da863155db936519243484. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:03:35Z), 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/QM6N22522867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56578e1b1fee2213d5f298cb83c250ab742fa929910d5e405c4710cbbc538b55. 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/ZA56E2416590.