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 0x951512a6b057285f9a7fbe75aa99f18eb0def9c93ee744ce798bfa18762916f1. 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/ab042087-45c9-4a98-85dc-0010d1c246c0.json and https://artists.proofprofile.net/proofs/artist/ab042087-45c9-4a98-85dc-0010d1c246c0.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 0xed49e7b09182312246179a5b9a725eef2ec7c25ebc18f6e0ff80c9d4eecbd351. 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/ES71G1919569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0668ee076157417cd3de3df701e9a3c033b6f88ee276dae06a626b6c45528b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ES71G1919571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041aa8ed804b4ba1cb04067883a96187714102e05dfb1abc5abb9f71ee550709. 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/ES71G1919572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d717dcd1a905ec0c7f9ba796965f10dd9c3a1e54170dfd6463b60f699d22086. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES71G1919573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016c97637fe04c7b37236b00ad9d1b874e1f72271a3bd7840634957bffac9f27. 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/ES71G1919574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b5da1bc703b988df1a71260b8bd4237ae58301fa9907d14745ca253b876ed1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR2X41523817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7babfed87857276fa47a947375f67999d783d4ad74fb3ef6693a892e0737cdb. 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/FR2X41523818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b6603b7f8522774011f081c0f5b2cfb434cdc782d56eb76338fb8c7f83ab80. 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/FR2X41523819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3e11002d22e3d288a0acfca596d4e168173c62248a0d3db0f1c10cf757b37a. 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/FR2X41523820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c76a39c37d7131753c8641c26a179f1429e06b26218ac9a264f8a43689df86c. 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/FR2X41523821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64f4cdfd016fcf47462a9fb410eca2d9a6fce6d50b54d012432909009cdc8f3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR2X41523822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe242b923f7232e99df9c808ac55a15b7c2348062ccc28013b8de224070a00495. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR2X41523823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce9a45e08279fa37754613da94ba3d63b1f89a8c59ee2759d603dc4f85208d2. 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/FR2X41523824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4913d6d54ca7804155cfab634d135c353356a3726e93250890ab0ea5d2dc0c80. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR6V82330183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1106711852faff7e0156bd9b3089d33fb36216727e1fe39c5cc5ed694ee694e7. 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/FR6V82330184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57535a244ef2d17bd043ca3bca557a75ac826e3f907a1a15c91f6bd6bbe70bf8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR6V82330185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec39ee3cb4e533cd3abe34a457428890532133b35243e5d7393ac54fc3e7c57d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR6V82330186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bd20ba318d7b44a201d72790b250441c571e9e5327ba4f4bd0620c2cc5f3aa. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR6V82330187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c761865354d42c693bddb88672805a2b914db93dabdc66fb007804d00824156. 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/FR6V82330189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7413d1e4ca81ad37c7c8bafca255512168801ff9ec4e322edb30f6f98daaf642. 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/FR6V82330190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9601876181e561b468c9f830776f680879fc78e1650fbce7946a75e0f2354aa7. 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/FR6V82330191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d717dcd1a905ec0c7f9ba796965f10dd9c3a1e54170dfd6463b60f699d22086. 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/ES71G1919573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b6603b7f8522774011f081c0f5b2cfb434cdc782d56eb76338fb8c7f83ab80. 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/FR2X41523819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09f475af9a105c42a7cb979057fbd3bcda9d250aa9f46aa2396246516d6e98a. 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/FR10S1504232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbb918cec176bdafeafd13232f3b7fa6685364939638f15ca5cbc66bc08c0e6. 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/ES71G1940039.