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 0x2bc4782c278d329490a563882623fb0510c1a969b5dee121c3784533e2e61950. 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/cff41edc-30f6-4172-8023-8d098b3d26a8.json and https://artists.proofprofile.net/proofs/artist/cff41edc-30f6-4172-8023-8d098b3d26a8.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 0xba8acd44f7ae431a18a2f1187ff38089e63c86fb970637af2903d1b2b72d6d61. 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/USCGJ2210646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa175b4eb17ca5970fabb3686d9560e3609a9e62e2569970363480c2b6ecfc86e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USHM22125536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a5677e7cf56367641c588a3e5cc8fa0fc0c863fbc9589b1241e1c486fe1f3c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRX872335697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079735201a4be59a1c2e3866c9961f263bda80135e59dd3653d3f143a755271a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:51:12Z), 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/FRX872335698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee40c7e57d837f006a7e401c473ff312afd5b57db921c104402c34476d5421ec. 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/FRX872335701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625ba7ed93175b1f1bd9eeab98f724597cfd5221a0e24d7e02aa53fca89d0998. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FRX872335702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6291042c3dca7a327b68530b46e20400ae8dacae09b9feaac80a6aae4f4f92. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRX872335703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722000e56ef98d929f7afa15cc16258b37b14870b54657f09e906be230effadd. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/FRX872335704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ab8b15064bfe7096430b8421c1f9ee2ed71cbdface7603fd9ac0621e4b6c22. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/RUA1D2477314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd338def3d0e275e79bd039772f9635f275d9c0d1fea964e184708000ef7e4bda. 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/RUA1D2477315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b68047e8aba102ca29bfcd6c254cc64a3fadf084fb66d35422b109bd6e3d0a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/RUA1D2477316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865cbddc137ee98cd3e65fedeada29670e761dbcb526eae2d3863aa4eb954723. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/RUA1D2477319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916563d5bd232549a4751e98bdd1c5892c11060270ffea1d652d79e83c34c29b. 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/RUA1D2477320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4641d5dd0b326cf41fa6a4b0dd4e0d33fa9a2d3076988498a9e76a7055b5a36. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/RUA1D2477321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbd69a74b3c2b166698b6ff3f9808d2a46f742f609eda70ef707e5993f1a0b6. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/RUA1D2477322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d33730a8269219ffa08698b5238fe5aafce7e120c163447a3c0bdf822f9b58b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/RUA1D2477323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea27b65d72b8ab096d8b5047fd63660a6906aa80236f36a36ed540e18d037057. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/RUAGT2506752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaea807ffbe3a0334c72637884896798082f596b22f15e43b4b0c525ff60c669. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/RUAGT2506755.