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 0x7ed7adb31cac4fc4f4164da9a9f261aebc6d0e6cf3a64d993db92186808b346f. 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/30bc8a2b-eaf1-4895-8464-00e1f647f83b.json and https://artists.proofprofile.net/proofs/artist/30bc8a2b-eaf1-4895-8464-00e1f647f83b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The 4 Musketeers (Original Motion Picture Soundtrack)
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 0x6551c4c72bc77ac308a8a85e5dd5e80a03a2aa59f626afae3fd7fa5a96f5b099. 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/USSM10405540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaceffcbf00b5361f68ea5d26e09766987484f57646eee80c1b4c5cbb22c6eb27. 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/ES8741824112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c9bcb768f169c565fb3209b4fea1f8ad5954fac667813ea73f362ef04f0369. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBAYC9600885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4adc43db3106c5a9f4894a6a804d7514a4137d6c16ddfdbf8f20d5f319d1019. 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/GBAYC9600886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9700ba3b10b8778a206d29ecde51b98979e7a7b3fd5a9d78a6b504fc4a6d81ea. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBAYC9600887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf72eb4b74db6c2453f060823c43f6fcf88f566d0e0834c89166212f097fdffe. 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/GBAYC9600891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c17b1aadef28a5fe32c8fb772a9611f4cd6353a56c27934c69381798560944. 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/GBAYC9600900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3845913e69397c9546132058bd5b2f67326f8c1f30891dc6a62c284f77e2ba55. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBAYC9600893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3dc84639d7aaacdda7498b7db7151a629b8b0261e175a2d5cc191e69c6886c. 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/GBAYC9600895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cafa8d242ffb539e24ace63b054024d9e4c79e5dfcd2de66f471f8a1681581. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBAYC9600894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc38e4b1210bc76b59e60f01ff3092d4676073dba7ab25210c1722f9a6563036. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBAYC9600897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a2d6dfc4697cced33daee5cfff10d6b9a0fe292f8ed4ed43a9be2f0ca99fd5. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBAYC9600888.
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 0xae7a5ecd4a43f09675050954d7f7139b54e578ccd1ddc460b4e401e946e6f3e2. 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/GBAYC9600889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39271bc0fb314364ea0443f5649dbc9fccf0ebe4d837ee5b004a5921cbfb7f58. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBAYC9600890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc493ba982856a72dd87667586544c0b90cd8d962e1ecc11011861d12291c7d0d. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBAYC9600899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cb9ba440e7b514cc498408ba2b9fdfe2fa0ee24a7f5ca84db05774ab1e4e3b. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/GBAYC9600892.
Peaseblossom, Cobweb, Moth and Mustardseed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46626341e39a820f36f235e7104bc9665c36792a800750ec7e6d91c45a811e34. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/GBAYC9600901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e065ba8edb8b93d8a12f1e4a9d4cc92f72f754d247d67dde157c01329932cd1. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBAYC9600896.