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 0x18277c8f85ab3243c026a239c20b1c73a5eb7c8e802d5e15be8dd6ba99cc0ce5. 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/dea4d2df-ea0b-4bb6-b0c7-cb74572b16d4.json and https://artists.proofprofile.net/proofs/artist/dea4d2df-ea0b-4bb6-b0c7-cb74572b16d4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Drumfunk Hooliganz II - Limited Edition Sampler
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 0xf8fdba42ae6fb53e509a4029f6d0b8af34995aff8a0071e27c39cbb8d1865b01. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USLZJ2090264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7513b8b80df94ca1158a22369f7a525f5faa5f61b86e493fa21f5d28f3ee3b42. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USLZJ2127132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fe7f84e9393340a997363294af52b8225a9cd8b9dea0350ab666b65e195c11. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USLZJ2127138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232f3e49cb34dba51a9dad344d978af7d6ba641fd6bd765b980cc3df5c4b4c04. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USLZJ2127152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88e9b29e90b6a11d76c8b633f847afffcc1c80f4b6c359a346615aaea71a47c. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/USLZJ2127155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031906fa4e286be4c20ea1fecd63ddf9479342051b35d7fb196bef706fc8cc3a. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/GBKQU2188107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf51d3756c0673b2503717bb77d49c3d6911debc6bb4dd5e0874caff19d32629. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USLZJ2201546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6d0127df1809003b76398c4d08eae6407edca8c34950fdc858e6d851fc1282. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ZAM762200421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063b69a3927994a66c2d04c8da7be6a7c675d811fe4203df9b53379944dd95cf. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/GBWUL2390552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c9ee348c68fefb137f3c34cc7230168bd88035df5e0348c4c95dfbd3cc24e7. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/QZZ8A2312386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833f6c60c679e2c04ee916f7e96c60eb59e1bb0f32e7c6f55b64f699617bca21. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZZ8A2312388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb701e22c8cdb27bd75eca3e371a346d0ee694437b73275340ac4b7d350ce3a6b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZWDD2482073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d2a0634efeab94542521693f7485e78c073111d713cf4bd764616ad91d29cd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWDD2482074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87a4d49ff586de0902dc0faf16bfeb84638f0f8cc9ebad0233dd4ea88ce8c05. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US23A1588357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177ad78fbc803a8034e671938f3156643383a6aec4256b4579b5b961f32e60ed. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZWV32539736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121d5f4557420f453ac29a0828e41d1e542aebb08a39c33ab1f4ad02be6671e6. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZWV32539737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611853af4e41c4fddaef5abbae828137a829836f0176d548e0893b4ac039abed. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZWV32539738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc195d9ce36d47e19c05f80ad39048bccc86ed8541ba7be31889708c0fb865bf. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZZ8A2572424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd695953cec31b5c230447e01f0010066105b96b92e662e72c8888e5133a01b5e. 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/GBAGN9700023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99c58035d58ba8d93b4562df0b984d5008aa6fc3fedcfb2b0dd560e00c8f58b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBAGN9920154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2293c84c6d5e8c5b65a452c18d08a3d5a43437586f7c958c881bd6618a972133. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBAGN9600133.
Aluku Records Various Compilation SA Edition Pt.2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdce5bc4aff5dff618c8c173332eb105e3b2653f0c77eb4de0b27d07bd779385. 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/GBLV62031892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbe28844140eae0cf042c30d2bb7c51c2ce8a530fefdf85fbc0d4537881a43c. 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/DEH742324990.