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 0xfcf38a7f5b720337f2b382d2956f68a897a90553e0816b764e3cfb9e40fd3b69. 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/9206add6-f454-4e94-8195-34bdf2726924.json and https://artists.proofprofile.net/proofs/artist/9206add6-f454-4e94-8195-34bdf2726924.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 0x631d332e30dbfb5ae6d260cbad315b988faa16039262ae4ba58147a2f9d97bf4. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/UKC342200401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70447628083948be7c384fa94f01e0ee45853a5edf285cd5793a0d4e089885b5. 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/UKC342200402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be9debbfa0e950e0ddba661180f87cd69aeb7c3e96089c74f82065c9c8cc70a. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/UKC342200403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d33292677b35d2d7bdd4bc2bf5c8630b253cf74b83d855d71df511db3d3775c. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/UKC342200405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7acfcb5cc82a57130fc7c774a36d57e37b3c8ab34967f13abc60e88c187f3a71. 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/UKC342200406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda528fd79cabb2177650ee77e7ea3915f7c5e032a3fb172ad6efd5098227481b. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/UKC342200407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd440e0cc3599ecb6e9d2703a46538b3d0f1ec93c4872771683fde751519a559. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/UKC342200408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbade5e67138751e4a883fceac81d1fcb1bccc4a37a4b8b9aff3a1c106428cd0c. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/UKC342200409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b26df3e6a9f873a0e9b0218339e36b747fab206796485f3bd14ed9b85da8d53. 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/TCAHR2349591.
Inception: Time - Orchestra Version - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03371c8b32e37984aa3905d35a79616481783e2b24a7f6a9d13dbb31e7dfae0. 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/DEE861806016.
The World of Hans Zimmer - A Symphonic Celebration (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4675dbbfb73cab3c2c497c0c9453eed12ab4db49ede4bec419db1946f2691419. 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/DEE861805998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765bbd60bd5bb11d06fab9e3ec2123e7f18663243974cce90e310040ed9d1f19. 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/DEE861806005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52914a01619749f76c38f8b734721a856cd63b140a73c422909090161830140b. 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/DEE861806007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03371c8b32e37984aa3905d35a79616481783e2b24a7f6a9d13dbb31e7dfae0. 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/DEE861806016.
Pirates of The Caribbean Orchestra Suite: Part 1, I Don't Think Now Is The Best Time / At Wit's End - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba2f67d217216fd0f18bec4d5379ef7f3b045d1dbd3646da7a0cddedc4027f3. 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/DEE861806018.
Pirates of The Caribbean Orchestra Suite: Part 2, Drink Up Me Hearties Yo Ho - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ee9d26c6b1506a13b1535713476581bdbf69d46561cd287082375232b2d4d4. 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/DEE861806019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03371c8b32e37984aa3905d35a79616481783e2b24a7f6a9d13dbb31e7dfae0. 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/DEE861806016.