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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ab2f08f6558dcee30cdfdaabc30232b8aa1ad66911ca88defc0d37fd0ff4cc. 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/78fce698-7993-4217-bfc9-a3b4981c8de7.json and https://artists.proofprofile.net/proofs/artist/78fce698-7993-4217-bfc9-a3b4981c8de7.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11262ee95bbdc6b5adb2c06160e0906ba2db8dcc5f6973681b7ec226ccb9d341. 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/GBJAJ2400186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0218e1a67b26c96674e4a1cbdad8570cdadd367585065fe051d3d575fa1c67b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBJAJ2400185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62717644c408605d58f94c8b839481c31b639d934500c56faf5308fbb2747344. 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/DES232300450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893f1bb73421f7ec2853276cb743b64c2cca93c9305a2806792cbccf3cbe6042. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/DES232300451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11262ee95bbdc6b5adb2c06160e0906ba2db8dcc5f6973681b7ec226ccb9d341. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBJAJ2400186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb93269fadcda8658ac7e7977053244e384c70ff07c4eac1483c0f0c7ff8548. 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/NLZ542200377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abc03fb4e15aa87d652747eb683eca0c7f940ee13dc4682cf6eb956296a9d73. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/GBKQU2431474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f239b8ce52da3bb7e498800336ccdc9d549a010a6caf1ca8fbb32f9793a695. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/GBKQU2431475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecb7c066bf5e159c52092daa1943e27685db2fac00fb0d4a2ec18f8fb7afb8d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NL8RL2435514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3b0a3d409c1707e704e0f5c5d18ea84f5470eb2ae92f3db99baeb93082e80c. 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/NL8RL2435513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecb7c066bf5e159c52092daa1943e27685db2fac00fb0d4a2ec18f8fb7afb8d. 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/NL8RL2435514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5715f3983037ff6b124e4576d858c973123e08dd45ae33542ad2a2c6b9b896f7. 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/NL8RL2435515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bba29b99df6a9e509040dc606d59183c1fe8ee1269709f6066f5b25c64601f. 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/NL8RL2435516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5119552e197b98788f22548c43934c36e0228acbb976dc4d07f70336f930ca0a. 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/NL8RL2435517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3559ce4aff986a1f5d315272befa95e5bd78b58a2fdfc227042f4713830702d7. 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/DEXO12405042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92d61529f3655c848ad8f566b21ea73dd456e1b15991c07d537a9ef75eff808. 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/CH3132317948.
Feeding the Fire - Passenger 10 Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5557a2e414d186c0533fbb6d9ffb0c04659f890221a1c2c11526c8b7c8696ee. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/CH3132317949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b34b2fd5c7b61be77c8ab0515fbd431056229701e3b4e842802c0fc362b924b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLZ542200378.