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 0x1798b5d0824552e75877d4094efebb0cd9ad8560bc3e4947162ae51b6d847ed1. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/803b2404-5fbe-4a00-a513-3775b32e4d17.json and https://artists.proofprofile.net/proofs/artist/803b2404-5fbe-4a00-a513-3775b32e4d17.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
VA Innocent Music December Sampler vol.3
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 0x0d9f853d73059fa9cfdbd9af0892efed6e9bee4ba8ef8a5b539a92063f852d15. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/UK6821408117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c451106aa8a6b97ca55a4737bd8e07dfba225c1cb4eb58668f5b2616020d356. 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/UK6821408118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5506266a005a106b556ac09e0df92ddc35b44e9dcc0c2d417869356563fd55. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/UK6821408119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf8e05e3d8b27ae625f9d396300fa63b455de3fa99c974e0d775ccb315760ad. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/UK6821408120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34861692137f3d3869a1764845e9239d6d8fa0ee999fcde0f4b58539efd5c469. 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/UK6821408121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3362e6650ba956e7eea5c3862e2f62756fad5e0efc468335aebd07a2bf82f1c. 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/UK6821408122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8858662c4b405184b9dcbe0f1818f427f73ce93881fb4c11832e1e1a5525896d. 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/UK6821408124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88327cb6025b375f5bd8976be04726c055691bbed745c96c9d9ebc0185b2874d. 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/UK6821408125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf3c8d79034f19d52eb5fe1195fc6a813ae81bd2dce27f576b9947c47aae3d8. 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/UK6821408126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925525ab2f9cd6d5f6cb2f4048a69d67516bc3ac3fea36c2cd8f9fed227094e1. 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/UK6821408127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e70d4b534c81c5f6d2bc8a5885e0e5a573c707875d14f43529d36a30909c3f. 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/GBWDH1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d99b03eb5e1102aad7fe27508693cf6e707cbc1d7cd6b30ee682e140ca3ded. 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/GBWDH1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42aea989bb078a4ca25a60919e5dcd1680fd908d6592f2982636fd48fa264609. 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/GBWDH1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabac6ff7b77fe5ca810cf311ba3943183df5e29ed145edff296ce0c970bf8823. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBWDH1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f208f087a8cb11564a3a4a605f29f2c2b699b3b0dee42e20a252ff897a03ba. 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/GBWDH1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138df983c256c5470ea3daf488550ae1ea182f00a4187d7d559d23484d19a913. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBWDH1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981bb8422f6550dd738e3e41e4687a431bc0215429e1750a9141c2feff32b1e0. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBWDH1900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4af35deb817c8aa68767fc3e6b8dbba6c9f364c826a56b802de44e076600c5. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBWDH1900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c70c6cf591bff66c099b31f2594489c1db53f9d9e22e738c31ac0fa8bf4ce14. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBWDH1900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb263e944f3ac1000580bd2031cbafa09dfe3e08b2cb1c1d4c1ec7ca839b1131. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/GBCKV1715901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c7f1dc32b79418d8f4b3464a9190a9a8199468f276118a30793b12ab6cbaed. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/US83Z1507717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12ee277545265ae216f1c49954d23d8ced37001b4b3cd7900cc993db1562898. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/JPZ921704770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfe9f65a4595c876acf8144d08ace5371223b59d2ee02ffc07fe3a377caa519. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/JPZ921704772.
Studio Gangster (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d42c41cb99d3e6be4f921c133f1ad04b114d4df968fa959a2a2d654f7ab26e. 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/US6YC1500464.
AV The Great presents...Trunk Pop Click: Pill Musik, Vol. 1