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 0xb49d56f108454c9f6f9002b8df8e727250fe8e71ecedd41d1e61f530bf081eff. 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/c57845f6-edf6-4a9d-91a4-8b10b280f707.json and https://artists.proofprofile.net/proofs/artist/c57845f6-edf6-4a9d-91a4-8b10b280f707.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 0xb488839b875ab3253f73daf06d6a690d99b2099f0b72b79bef4e7cd9d7a14886. 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/QZMEN2379369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ead23f5925376d5a141aa0f17d426b4fa82ecbeb77d96cbea11b8acfb73a61. 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/QZMEN2379370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6b4d04d315c8abc6ffe3e84e353f8cf7c29a3f2debfa7c569734956c4c710d. 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/QZMEN2379372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf5720f9443fadf524d37b00df60984260763eeca119607f5c801aa7cae705f. 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/QZMEN2379373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc6e81a80b73d92ae4121432a03151745fe9f3909a9991924c3e03e0ca32e6f. 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/QZMEN2379374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77437d7b7b85bb35937d77bd00a667b357c79495b764120ead9972553e4978d2. 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/QZMEN2379375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf97602e2f889f314baaf9b58cdf55cbe67b29bc1df49002fbc79d973d787cd1. 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/QZMEN2379376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddda95f09eada4fadbdae49908972917a6f26d3361f5e5127076980968e4769. 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/USHM82000191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5c750212da7731c950df8d873730ecc46f1f4424019c00f4d818f3c6be851b. 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/USHM82000193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe659c6745791f7cb35ad9c360f0fc0111b1593d32b8da3be6c7416e5299bfc9. 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/USHM82000194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee78373d803950f1e364b31234f59ad3f420d92f0a6e19454de300968f850c2. 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/USHM82000195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b4a7b163e9f1aa213f210d0eed5c98dc42621c85353ca3d1a32c7b6523ef32. 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/USHM82000197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2589f72bfd6fbf0c36a76d4f20092de11dd24bc5ee430602500aa54c632a303. 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/USHM82000199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8747b8f2974179fcbe47af3e5d9ab73508a7e4fc9159a62254e0a4939639a5bd. 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/USCGH1773654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06910d522e9483125e54dc27e57b81cd9b35e914cb9c3053fbdf7f72c0a50c8c. 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/USCGH1773659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07005af5df5895da8ece7b6cc304950f2528949c89d0d3c0aa8c3a369320782a. 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/USCGH1773661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd737d7a9c364c2c28383d96b136ba1d5e17ad826c5da9516f0d0d168d92a750d. 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/USHM91440205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25fccccc872f2141daf4dc0b76e913cb5280e6ba2b6391c3998bdaaf4e0be83. 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/QZHN62401602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517117950156443f398a9dfd71e7195bb692c309a293b733c72d853898c67877. 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/QZK6H2269400.