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 0xac63d62c4688500f2237f2d714d0f9030ef64ad9645717c8700b52ed7a34f95b. 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/c2c4798a-d447-464f-a9ab-8e7e8d348250.json and https://artists.proofprofile.net/proofs/artist/c2c4798a-d447-464f-a9ab-8e7e8d348250.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 0xabeb5d58ed37ad7390662851fc42a66487d5cccd209f0cd748d7a0884c8f22b9. 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/INS182400498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8679c36e3389041f902169bc771290385b7d89aaa20c236ca7341d0877c54dc8. 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/INS182400518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853b67e9fda19c0517514f44bfae33399cae465b20fd4ab75a2b1c6f41125f65. 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/INS182302718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2beb29530a831207d6fe4922e8786bbaabe8922b41c48e75f4978438a189ed20. 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/INW262318188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a653eec15b5b14f240c2b57582565d8403560acaad3d75899b76ac1e63402ac. 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/INS182301734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebf6017035ea24c47b13a95593451882b76e8cd8d5a2afbc298fda5942b1584. 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/INW262317622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f003bef2eeb06f02df1de7e9711894ea3f2519a1e78897d7bc97cb96db2520f. 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/INS182300909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47857454fcdb6838c450c69261174fa0de3a6ac0423c5af2c9b13d49bd5adc1c. 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/INS182203276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710fa8a34cd0ef36bef33569b2f4db30c844fb640bd034b9d4255806f1f20b87. 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/INS182200966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5597efce116d170f26d8466730eaeecd8440f349c24ccc5fcbf3640aa9e3d99c. 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/IND712213004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464eefd11c515015dea6ca22fe21ebff6593740913803ed508af69b7441450a1. 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/INS182115833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cb4ae51800bb0e836d32c4dec59e892e4bf880e73f1a0cbe64a5bca5d8c360. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRX872191604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc026689eaf79644898038fe34386837788c7c4e44a00959fc5c06e87165cf1ee. 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/FRX202118648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74079653b38a17802b2877f2364742c09b00fbf03e1cfee80de89bdb459ed3e1. 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/INS182100457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7463f74c5207a015f7b65523a26af817fcc9f9477f0155387c29d5c412ee10d8. 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/INS182001593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2a622f88383a86206961d172158dabdb2f1fbc5568af0c6764e5dc87a72363. 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/FRX202099848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960ed79802e195886a43d9ae18cfb722397d5260d32a1eb59d16b281a5fa99a3. 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/FR2X42071796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb0545a18116e0513740671cd527801e632641ee2d712948c734461cc8293fd. 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/FR2X42063171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f215b9b578cb1e33c9a462f11cea6a6d80204c4702892572547c091f66f1ac. 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/FR10S2019876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b608bd748413199ce9e5a589aa084f212d4e41d3bf04b66fd4c7545763d3515. 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/FR2X41948131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d99bb923eaf7f0e885b5978d9b818ad4011226276f5c10dfcf16bd83275a93. 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/FR59R1889235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6875f5fb85dd01087f2bf823d163e914f21cfd5a301d1d3b7a550e17fb9e3c01. 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/INS182300356.