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 0x06ac5cbd08d905ea1c8a3c756b3d9115e1c676312d82c7ad480438af734e596e. 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/ce9f76e3-56ac-4974-9b58-5d16b6ffb059.json and https://artists.proofprofile.net/proofs/artist/ce9f76e3-56ac-4974-9b58-5d16b6ffb059.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 0x3056e20ffb672ad0b2098f26586b3a5bd0fcd3cc4db75041aeed3de8573e0c10. 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/QZ8LD1965342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c385973f1773b8db5174abdcb70f4e102e10dc2792a49627e47c5be792f72f. 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/QZMER2260533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f15cc4f919de8873dfaccc3487ce2da91ded3f4fed13182a8b7e5087af5688. 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/QZNWU2259882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcbe5e8669999deaa6f914976ba153ad752af9f4a2dde4a4516e48a64ffc274. 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/QZNWU2259883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6b118abf5a49fe10ad019f68cf34a5bf9e8f3b8a71e9a4c09c0ca877a59c89. 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/QZNWU2259884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8d39f9137e17ff2870596185112e60b836715f69060184e9d95db5a51bf108. 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/QZNWS2245123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8d695e0e3ea0c646afb160b30a71abe9927cbbfd83ad7105516606aaa9631d. 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/QZNWU2259885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5b807c814b14ba0b46d383112350429194508cb381bd13778374d73433436b. 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/QZNWU2259886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdde6e90bdc7a46ef0059fcd62344292ac8c3de8b716041ada3fa22c4fc4db3. 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/QZNWU2259887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939e52fa8eff7048972dec60a834548e429d15754317186d14616e882cf6a696. 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/QZNWU2259888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e2bfa53ab3e0a4abe0f00747f32ac541ca67a696c94deaa18df609282fc00f. 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/QZNWU2259889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583fb2660f287b7067d7460a6a400cb11bf7ef53bfe75d69eb7c1f0325190716. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/UKW3Z2301931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8d39f9137e17ff2870596185112e60b836715f69060184e9d95db5a51bf108. 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/QZNWS2245123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c385973f1773b8db5174abdcb70f4e102e10dc2792a49627e47c5be792f72f. 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/QZMER2260533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3056e20ffb672ad0b2098f26586b3a5bd0fcd3cc4db75041aeed3de8573e0c10. 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/QZ8LD1965342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e80c5b46d7aa157495677d4b6e2d9f17a853e747c8e04ca862b17993ed2700. 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/QZDA71973882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a361878908227458a17ae51879ad74e886e5083eb662c9b8ac121d3ebf29f5. 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/CACXH1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37cce746fcbb852b4aa0fcc4f31b3c48eba3606e5b4452d6a80d5420f1eba0a. 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/CACXH1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282abd35e8092e470a2a9a9b5afa1e375e5bbf8fc6e5b277e57f3a0b972d6fd8. 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/CACXH1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0758d62f75dadf573faf02b12224d878c3ef50d1998b3c1aa95611f923991454. 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/CACXH1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870b4e3515fccfb00b6d0c59534a0c89d6cf03196a094f0b74b016265e57f7cb. 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/CACXH1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf170906eb1cc51074b6ec8729280ba9221265cb8065a140659ba5048c13edca7. 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/CACXH1700006.