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 0x7ae011a88eae5eff40588e085817ae28c93137e24c562235fbe7d0c9533f3e0e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/430850f8-43c4-487b-b728-485e9771d91a.json and https://artists.proofprofile.net/proofs/artist/430850f8-43c4-487b-b728-485e9771d91a.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 0x3b68a8224c7749c6185cc158d0d6a03fe30702e98caec9b8eca106d1f93d91e5. 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/QZHN72119040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e04e74a5b08ad945023c69285319990773d1252354350f8005505ec14a0212. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN72117857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf396d5c77273894919e713a9e1c055d8f5252477251c849efc1c3ed46c4060. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:04:11Z), 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/QZHN72139278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc135a7307902093fc4a9e35d0d1721192288456ab774c40a3cceb67e821b9b7c. 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/FRX202284660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd1712999839c77fd5e5e9167a303e0362191153075cf194061de4c79dc4646. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/FRX202284664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf6b4fa955c5feacac09cd4dccb10a657bc91a72550123bf25943dd79433dc8. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/FR10S2395730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc34b3aaad4ef3675556b582d749a80bf2936c8ce9a8996d62c4ce55d1f951e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA092365940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c280fa2d48dd4bb46039d6235afce1121e8b7076b79e90d0ca628fdfc0eb6a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA092365944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59be5468acfe2925f468e275f318ee59c40ebeef7d2a02e89a94156bd4554b32. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DGA092365948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf07fb85aeaeab362b7ecc5602e3999235965d94bddecd9e3e589826034372d7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR96X2497402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9add1f7c0e1c1f2b99ca8add58a75002eb20c749ef1101f65be703397c2558. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:57:06Z), 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/DGA0Q2429207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6f83af03bcc2438959f7855771953fe8f238d00389821bd6884481a42d26c5. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/DGA0Q2429211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf07fb85aeaeab362b7ecc5602e3999235965d94bddecd9e3e589826034372d7. 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/FR96X2497402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0432e314f11f1d0b9d040f939114e98f102435752d2206c91c4771b4d082223. 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/DGA0R2474744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9add1f7c0e1c1f2b99ca8add58a75002eb20c749ef1101f65be703397c2558. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DGA0Q2429207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff1fbb040861bb45f4bf73d239128d64e5beedfe7a91638bc74ead0f5784977. 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/FRX872538295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840a3762f782a2339e9c708ce9a82ce0e8f196ec5b80b1a042d0b9534cf73e80. 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/FRX762464165.