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 0x0343d9ed7bdc158afd35e0be5c52ca0fc1ef80de8988bec0598c17daaa42bf7a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33ebc889-6a1d-4f8c-94f2-6b891040b251.json and https://artists.proofprofile.net/proofs/artist/33ebc889-6a1d-4f8c-94f2-6b891040b251.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 0x78d4583b42f21640e88ed54ef5c7a78151225e9f7081ab0f09004514b30786c9. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:42:45Z), 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/FR96X2357247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7756454441f0c2ac375d24a35fba228a2dfb3d47e79cd7c5108c1ab5ea548e54. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/FR96X2357812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedec83a51cf6d0fd3780d9432ec1d64d6d7014aefadf42799e167cc35574b0af. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR96X2357818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380a227a631e7f08ab5a6208dc34302936db996ce816b1f5726253dfdb1aa9fe. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR96X2357814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f7cfebceff308515577ec1cc4ef393ebc42de176b3cfac24993c0b69c60ab8. 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/FR96X2349218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dad118db2aee49cdbfbe24098755f7928b2b58399fd05178a0f4a66fb5eb46. 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/INV582362118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb604efb5521daa8bed6c1c636ee40d4e8a4a841e74058711940c20179bd5a6. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:04:21Z), 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/FRX282462411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1a5e45db9d25cc7bdc8cad0f3cdb05b44299d98099c1138727a85351e16555. 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/FRX762438775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf594edebe5aa1e83e3e02184106b4723407f306a8082665db10910c35a396006. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/INE302400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61406d29b46ae9f2423682ee1e3c4295f0d9d75d304dc05a4e9c2937b9ce4852. 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/FR10S2504321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde54bb32f78f64b7876e52d0b6c5a64183d2ef89b28541e3dcdad45377928cb. 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/FRX762591479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a663a36f29372996cc4ab42be7fcab0bee54738c8d0c5bf708e5afa44002f4. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/FRX762591480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567de75010c970abb4fe7bb93be8ed447afee7ea6a1ffe1233b7287dc9b19dd6. 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/FRX872500467.