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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92ce20de9ed4668d40690a494ecac9da46f16ed42fdd376d996f2f16406632d. 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/5f55dea7-6aad-438f-b604-39c1f48a81bf.json and https://artists.proofprofile.net/proofs/artist/5f55dea7-6aad-438f-b604-39c1f48a81bf.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae6d2b9ed7e692b70b109b76291cbc559a4d6b0c4c01491808987466b3972c9. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/CZA166900805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d6c226a0e6ed8cafe19eb8cfea142acc67736c4af0535618a8b609d3cb4400. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SKA128101601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4bb2ef3f3ab131a0425418f24c67a09396be7f9b8b76f2aaf0f2c578d49c4a. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/SKA128101602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a23d1c36c1fd7389f85512daba9942ec3736e809c834db83b34c123ce1259ab. 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/SKA128101604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a5e7ff41047bc92f155ef4ec6ad250de61a1aec93f12bfbb10e193d2030ed3. 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/SKA128101605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c75a3d18ec93c002bf63cec64b91c8ec55cc6505b115ae188611977a27f6a41. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SKA128101606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c4383351ce6ad2b33d6b5e6bf54792d0df58058a07bf66ea5a40d6719fe5ef. 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/SKA128101608.
Neberte nám princeznú (piesne z TV muzikálu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6f0dabba07e4a167ef2860a4afd444b26c2c35a1383adbb9fea4557d10eefd. 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/SKA112397001.
Dieťa z dobrej rodiny 2 - Jedináčik ľahký život nemá
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124144748a524ed913ef48fe92964b83b0c55f7348023d776ed6ec3807fdb8e0. 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/SKA112397002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a03f0c1ddf7c4a518dfca6837de1db6577322dfe34ace58883f46abb2a13a9. 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/SKA112397003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97d50f66f98cdd71ffd9394a914fc8ce3e3cce4ef44e631bdbcadbadc81c4a8. 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/SKA112397004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb672204dd2120857bd90202e9e245c9d86aac04c4c8e40df281db11c9758e5e. 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/SKA112397005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1ddc909667f9255a1769e3477ccaa468d339ddb166cbd018422a6062abbf6b. 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/SKA112397006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899765842c0fd3059020cea4efcd1e9b5b4edd27ef2c864a2f83239c6601599d. 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/SKA112397007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5367aad821f1756686b843cda206ee791b03c237ecd2231665b3dce83c887d30. 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/SKA112397008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee07b8d105f24790772d381fe40e2831180bf20d51d640b8dc01b9e22cfb8d0d. 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/SKA112397009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a0ad62e5db12ec995cdbc368005b051f32a2b7dc262d3fc2e1df861cda6356. 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/SKA112397010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5df5d535476e240d55da3fff5a8206ea2aa8fd7297893b2d1048ca679b2368. 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/SKA112397011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6218cd456af097d4603b11bda10c7946d68ef1fff712719f103f45b63ad75f5. 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/SKA112397012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9558cc5ba6edc7ae7312774a95136bafe0b3a5203d21c3ebd2ca2720bd4cea. 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/SKA112397013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ce05e5993fc479a9166190ee4a01695d5c473d278a1d734fa5bcd512e33179. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SKA112397014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd486c9b91d848d05e79c6f18453e059c72d1aa939022187163a878d571d349e1. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/SKA128335301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169545cbfb5248938fe2c283296b0a481f05dd75c207a97c95ffa594a2393c2c. 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/SKA128335304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2461daf8a59975228394a9faea4f0cb0e3d0df471a4cc0d114608f3d1f4342b4. 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/SKA128671302.