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 0x8a7347118d818daf2049d1b2d6d30b454b50bb07aaac2e686391c29373a1b23c. 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/7f13a900-9181-4167-a14c-5c9ffe050618.json and https://artists.proofprofile.net/proofs/artist/7f13a900-9181-4167-a14c-5c9ffe050618.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 0x4c8c24319cd9bfa5af51423042e1a9d851bc9e88c6d52d2be5d5ff379842b4ea. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FRX202055492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8057e4643bb94df4172319a28bac6eca986a74fe789b63e067d5f2afebef122c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRX202074797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e133a82d74d02d474423c325514c80b521066675cdda9a35cf44c5c54974bec. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:27:11Z), 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/FRX202080534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163e158061ea9e0492fecfce322991a91d593cad59dbaa9f2cd11a180277f068. 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/FRX202093487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae301af4f7c7059be9e1c7ded41a931ada37aad4bc5d1b961fbd1296e94729f3. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FRX282015339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245ecbfee1fcbcdee2eef8853b9ba61572925bc272c9d4bb3f950c39333af4f8. 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/FRS182074712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fc5529e5c13c77b7c68a8854ba8d6fdda0743e99034fdb0628434491ef4a7e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FR59R2119367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1504b05d997e0465f1f10788bd269e4c96052fd8917868a2542b715a5a24efb. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FRX452116390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbeca4555719a0d255f251ab3af54578ce7cc9da389e26327c9a55d432f1e193. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/FR96X2225977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5945458bc397a8b04adfd4f0e174590932ad4ccb75554c09ae1b557c30f5db. 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/FRX282261684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8f4028155f46bc85c84bd59c1175828c40dfcd35dd58ac039a7c9329323a35. 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/FR2X42335801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506599c3346259cda07e6c1788870d0f9610a43098f07101ed8b29ac2ca13133. 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/DGA0T2438186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b571ddf4f6bdafb33fafadb26f71ea3f85ab1fa0852297177c61cd074d27eb9. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZN882552539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac998f4ea33c8a73c55714134c1976c0b9d74bb4d2fac9fd404cf50616e0983. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:57:07Z), 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/QZN882562036.
Kar Basore Ghumao Bondhu 2 (Slowed & Reverb)