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 0x4425cf60c680f6b52dd1fcf20ca293ac6d0b8713ad10b1fd41e0f0c4b7b85266. 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/cae7b529-bbde-47da-a238-0cdda5bd31b4.json and https://artists.proofprofile.net/proofs/artist/cae7b529-bbde-47da-a238-0cdda5bd31b4.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 0x477c8f893d4b0d7aae3846b542bba185ed2f47975d699d5bf3e8acb36beab74b. 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/CH6542445940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b64c4ec60f2428e7e76384ae37333e6b00843e1418e51bbc14930700295576. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CH6542461608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bd0e8a7dd5408378cc5b860ed2d2979bf41c2006b942d3fc338b15cf3deed2. 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/CH6542484757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477c8f893d4b0d7aae3846b542bba185ed2f47975d699d5bf3e8acb36beab74b. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/CH6542445940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bd0e8a7dd5408378cc5b860ed2d2979bf41c2006b942d3fc338b15cf3deed2. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/CH6542484757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b64c4ec60f2428e7e76384ae37333e6b00843e1418e51bbc14930700295576. 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/CH6542461608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67738a21c62a583d063e061a4a2bd1b748c8f271e49941857cb855532c9eaf5. 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/CH6542431673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b01816fe6c7de91b1ecf6e73dc516f0fb905f8a66d08865619ba6d6f6ce8ea. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:16:47Z), 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/CH6542422424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea51f21e687b05eeb49222e7d23b88a33a062c2cc9a26a8a68ece49b6f83d81. 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/CH6542412606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50627bee5b125a2bb9a01291b2942b2d513fb2b2542ef06619946d14eb0df159. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QMEU32417297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b64c4ec60f2428e7e76384ae37333e6b00843e1418e51bbc14930700295576. 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/CH6542461608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477c8f893d4b0d7aae3846b542bba185ed2f47975d699d5bf3e8acb36beab74b. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:26:22Z), 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/CH6542445940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ddb150f4d3d0c24f2091b786684e1a0b807192169238d9b4d9bc227ef243df. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:46:20Z), 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/QMEU32417298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea51f21e687b05eeb49222e7d23b88a33a062c2cc9a26a8a68ece49b6f83d81. 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/CH6542412606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bd0e8a7dd5408378cc5b860ed2d2979bf41c2006b942d3fc338b15cf3deed2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CH6542484757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b01816fe6c7de91b1ecf6e73dc516f0fb905f8a66d08865619ba6d6f6ce8ea. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:48:27Z), 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/CH6542422424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67738a21c62a583d063e061a4a2bd1b748c8f271e49941857cb855532c9eaf5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CH6542431673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2625986a297c99ecaf06f2e542a5c4a7a434d8e73606a3844bdc47286f42c43. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QMEU32417299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ea891aaf65e9617479487cc2d4e18a1d9875a12b3eb83c00409283aad76532. 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/QMEU32417300.