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 0xa385744b59ac5f8444550114a474e6f958ee9ea79cd746445b9c3ed94a0ec24f. 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/47488478-dbbf-408f-9bb3-89082d53beac.json and https://artists.proofprofile.net/proofs/artist/47488478-dbbf-408f-9bb3-89082d53beac.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 0xe53d60adf57873dd49a1e835dfc138bbe16e219dc73804802af8bee99b46c305. 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/QZK6N2044591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d72d21166c4e4fd56ac18405708c35c6a1e5070b873fd2cf67f04cac42ecb08. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZK6N2044592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdae1fe6ead99b177d8a89b995f40e01c4eb4c47dabe348d5860ace22a42d52b. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:12:55Z), 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/GBKPL2288712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd4f7968be5da68511aa190247dc9cfc2ac6c883cacbbeec6676706dc6724dc. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM4TW2378533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42eaa1ca286b9af03d6476ee26eb46d6e58cd00f8e24fa7da76f7d98de25669. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM4TX2300167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13f022b8322b8cb3d5a7d376b9ad8a72859042f5c98ba80565d45dbfdba8c04. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QM6MZ2305658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fa42bd86e8d66d0ab113d4d56cd5ff3145343b8a769b460153eaad61ea1e0c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM6P42366029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6ef9c5d9d25a14e7df3c63231eca0143083c864b06ea1de132315299d494d7. 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/QZVEM2373582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe334848a6b33f2203ee15b7b39a5de0146b9f70439d63c52455b24184b515ef. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZVEM2373584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687d55de807aee6c37672ebbad90001646a694b2a27f03a057a8ff84cdce75df. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMBZ92406238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a7b2d41714931dc050ae20f79cc25c66f515bba62601f8d6c0fe470a8eccc9. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:57:56Z), 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/QMDA62407023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687d55de807aee6c37672ebbad90001646a694b2a27f03a057a8ff84cdce75df. 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/QMBZ92406238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb799209c387b3646259d846779ce45f13b97f6c1e9512f4879d91048e019497. 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/QM6N22434731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07e1a8d303d832254b9bf84c3c48b6d7304012cad97880ac4d8a293f1539630. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/QMDA72400753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fc8a8fdb666c2e109c84bbeaaae98caf74f4dd072b24a4a70290f4ddc1a44a. 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/QZS7J2234133.