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 0xd5c7d94e85563de81e1254a1fc848fc7e1faecea81101e65500952bae2e5ea1d. 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/bcff41fd-4726-42da-8e14-b4f6f506d8dc.json and https://artists.proofprofile.net/proofs/artist/bcff41fd-4726-42da-8e14-b4f6f506d8dc.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 0x81920884543c37120896c95c2a1af5a4f572045431cd623408aa8bfea0906d83. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEAS82000332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624dd49fdc422c901eed15a07e2813259ac3a62c8179e97dc7945aed82d02326. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEAS82000544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73be1dc16c21758a303a1d0b17ca3e2f1f79baf30ee2e007154faac66d53a8dd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEAS82000561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea378498c806c9cf2b643e8e0e022c54a44a2a8cd08518ac0400bb34b5c6026. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEAS82000568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624dd49fdc422c901eed15a07e2813259ac3a62c8179e97dc7945aed82d02326. 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/DEAS82000544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343327dea81f2e604de7d707fc34a35210f9b43132d75ee72550324908198e8e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DEAS82000599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c47502f55931d962356ac3f2de2ee5cd37f80b50203b12a72aa4824603739b4. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/DEAS82000611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b2b63a2a6098afdb20b1a08c473c40ddd781e774e6e53501cd6a61ee2d3aea. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:02:32Z), 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/DEAS82000734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb90181ed6aa7d2026d95d04fcbe7198981603f2693fabe1784b14db5031ba08. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEAS82000594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58cfc073a1f828cb664737dc5e568fabcd0c6a11acab9c2881bc47539f36203. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/DEAS82000554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710b176ef29cfec4e26d64468035e6d890a470e72fb626f530bc723b3956a819. 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/DEAS82000608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ea78579b5779ee55c67f5b7bff7095591088652595903f801a1337437b3c8e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEAS82000614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdc4488ef7480d34a6a4e143740716c244f2169b0cac52702637d585dcf0021. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEAS82000553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc52a59d984200a44639e22ed9d0684a0ee0dd43284bb4afedd9e25d68ed0f40. 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/DEAS82000573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d2016445eb582de4df52b77cb03502271089bdd746c4e8fef46a37dc32af15. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEAS82000552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e99345eeb2f2d7eabd4903e387bd7b11341d7006ef53504a84a9bf4d0ba883. 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/DEAS82000572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10b8f4ad534a092c7b008865b1ff817f40e52bc979a08414de5ad8bc983337d. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:48:24Z), 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/DEAS82000435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7419bf01072882ff9f8574b720a3dd9f50c83cc6aa2fe3a8252b19384f39f0a. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/DEAS82000436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab44fb5089e5ac0e7655fa57219d60b8f0912e1a4ec9ed14e17cb83d1958d123. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEAS82000437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d247fba4c72e1057584dc03bae9af53554a44686db442aaee4f690864f27ef8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEAS82000438.