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 0xbfad90d565eaf401246a6b7260dae46349d828546507869eb71b7a53a01e05c1. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b22dca51-bd62-4e98-b8a2-1819e895ee71.json and https://artists.proofprofile.net/proofs/artist/b22dca51-bd62-4e98-b8a2-1819e895ee71.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 0x16afd65e3c2c12d961de8eed3e07bd320d60c89691caea9fc990c85db1282ff1. 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/BE9JK2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d578b2317618acfc40a8ea66640c4d4b0a9894459583720eada8ba1f3c01939. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/BE9JK2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8feed1ddac1e4f62964262d55c330653fc8a54fbb86328b665d2b6f9db6cd741. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BE9JK2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f146aec1475e24a9029617af9812ddc29bb8a53a234967cc0cfb179293b362. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/BE9JK2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5377b5b7d651fb64ad17f988ee7fd8e4625ecb9667fe4b1e9a0b4271100e5841. 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/BE9JK2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdda672f25c5c2a13ad44e5486e04c8c69b685d2dcb07ebf478ef225a84d7e0. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/BE9JK2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6663f6b729172f7c9dff18d383db01b7770122796c022b333d80f9960946cd4. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/BE9JK2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746a31dd123da23d2359533902ef2d7d0371847857de24b5587784bde9c274cb. 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/BE9JK2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcebba4f4cedecd54ad1d203382a038f095d20937f9f130e9ee667207546a7bc. 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/BE9JK2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf9d5a4deb9cc19c1dd8e94ddeda45d5fd29f9e80be12e37fa537081b389da0. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:03:05Z), 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/BE9JK2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed04efa7b8b8617808f1f35a4783c337658884b3d8571defae137fd49664db12. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BE9JK2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca81c57ca2cf5f5cb4ee24295ee70fd55aac00645c1885d896c47045787e5246. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BE9JK2400011.