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 0x14be2e9beeb5fcc2b9d34aa66639aefb94214600c221dab3aabbee49344fd0d9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6d21855-1ff8-45bf-bcb9-f0a410925aff.json and https://artists.proofprofile.net/proofs/artist/c6d21855-1ff8-45bf-bcb9-f0a410925aff.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 0x45ffce92f32b990e90eeb25ddaf498c3641775a50050c4ae1f02a24c6a12362a. 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/BRPVB0700144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc1d20e5df8200ada6d140e25b8a49735d9bc2715a2994fb5b1a02fb436e9d2. 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/BRPVB0700145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6e51d8beaa28408d1f6785f8fb58775cde3deeb753ee2aa8102c4dbccc1aa1. 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/BRPVB0700146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da59a4d3ea36f386a60bb0c6c06826ad2dbf35a1347d81b58435bd1187b58a8. 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/BRPVB0700147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c4031e8c2174b41d18f39acf392ffd8f1ebfa8cd476bc4779e78cf0b350a59. 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/BRPVB0700148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3161b1911b84c165d5b3aed8e2b0a71e60399c94eac8eb25f3f04592b35c39. 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/BRPVB0700149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703438947996f8fc2f2bcf05234a2ac5f4a60f2bf9fa1f63171d0d7066d0bf6a. 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/BRPVB0700150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f4f80b89ce2ccdeaafb23a30e394170bfe79b5080ae218544e1bddff95ecd0. 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/BRPVB0700151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22a7045ffa5ae955e2e8893effac87b96f2905e85dd3918534b29f38bb4d4d6. 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/BRPVB0700152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c153e7fa1af3a9b713f176c5465c5d120447d892614ad3c680e905d3c48f21. 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/BRPVB0700153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efebb599f16626d7a3edb1ba8c0cf0fbeae58bd0481230b341a916611a4fd8e. 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/BRPVB0700154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219f01e48458a1044083ede0b240d2fd2202e26c0c35f1bbf2a9d9f427fc42f0. 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/BRPVB0700155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea07ebb90a221a0c2d797af3d0966de7cba29f1a573d29bfa1df68cebb59f876. 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/QZTVM2372138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f005054661be003cf4e84f1e86b0bfa8759724befe8575a58b20888d01420d. 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/SEYOK2241830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a62331c08e3be3af77a5dcabc914285923382473acd162d886bcb0cafd1e14. 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/SEYOK2220093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e4427b55ef5c6563e86210c087887b8777ba42819f22274eab9e7f2e5cd336. 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/SEYOK1856435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9565e48b0046784d5780b87b01d6ef56e56cc70a145463f4c6db2baf7015a65. 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/SEYOK1856436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285b740805dced5f491b9f903d3fae284e6ff718a37604d3734fe8c6be0154a8. 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/SEYOK1856437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e60dc8d88909b4a5af2988cca57d72414407b04be3d9b7468629c8cf84d075. 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/SEYOK1856438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9deb3bafe9298441ecd59666abc769ff103c2983830ff0b0c736878a6446bfad. 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/SEYOK1856439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b594c7f69d3cd257077ecc9b6fae2a9b30fb97c2838506fc6f89ca93cd58d0f. 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/SEYOK1856440.