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 0x92f161757c1ad5e90f78f1a72bc20275c385443097f060ef75e9b19c28613e20. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dae6c2b7-95bc-41ca-bb43-9c37a9803ad4.json and https://artists.proofprofile.net/proofs/artist/dae6c2b7-95bc-41ca-bb43-9c37a9803ad4.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 0x15d297677178575b973e6017d918772a9ec30ec30c5034f6954b0e6906730214. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/NLCK41012433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55553ded3abad49a2f2233b15c97557934c0a0bb120e56ac03d209258c5c3465. Chain 2 (Bitcoin): anchored in block 960430 (2026-07-31T16:09:41Z), 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/NLCK41014916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe223b26be336f56050607507ed453f28b5e13b00633f7f1b0a5833b4bc50499f. 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/NLCK41015941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f64d988a5f555517442035a10de770967ee9fa7a975c782f4c9ffb47807c2b. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/NLCK41019780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627addbcd50c154961fce33b425505ec7697b9683d3167ba520c439f6c3a3f61. 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/NLCK41021688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e358da5450d9dab74f3ead006c9455f5ae36b452fa3b8c7332dff22044cb6a. 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/NLCK41024514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f9e5bfa332474aef80066b017e93da37175c3873fa00dc08b34f14aefc506b. 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/NLCK41024529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dffa50649b3bddf2bf5aa20875a63500249a4fce1247ce4e6dc9c0bc4550547. 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/NLCK41024512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521f7eea08a11205b54a059383dec5585e67a8d632d0b9ea2b005ecaec2ed39a. 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/NLCK41401859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe500c05d3fed63e8a714efd4d982ba0f88203da5bdbc74d3bf57b35d5a9ec0dd. 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/NLCK41403316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050ecc85d5ce1ac7bde0e91b9c760b2f98837e41d233da89be11d62e9681d459. 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/NLCK41404392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8922b00e061a2968d61395d8d869fb4a652c8f7dd130987128f25943f8f6b5. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/NLCK41500625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7920c6c307be9d564889e1527615ab04da75cc9c1fb8b2dbc6f292ce0923dbc8. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/NLCK41028387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95976354d8af105799490229ed6be821c7816424f48105036bf6db4dcee29b93. 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/NLCK41029104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce1b7d86a49777aa4b15114c49298354881c691b4f3e03f68abac8fcc436f36. 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/NLCK41029684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79f5a31cc9636979ef0bf517f204bd331319b9e725adc7ff8814be664ef8676. 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/NLCK41031118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6eda3e16df731656ed251f6d3df9798fe928a54e3afc60a40b66304f94636d. 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/NLCK41035296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb299287b299162c0eeba01664b505e561b8612d654712638b26db409fb8328. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/UK5551600050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a786aa758532d43982e5f868917291d67ff7145452f72d170e20212be84d38. 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/UK55R1600058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8325d0b7be9b80571194caaefbfe94414e7d76203fa1c5e46a9b33d73ca5191d. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/NLCK42212081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e068131889e410bc34c56cb1121a9b3bd2de4f5e09ba13779b13035808e6caf. 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/NLCK42212087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d0841c0699faf18e589c0a5bccd96d4f1f59adc76a1923abf7cfd25ea272a5. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/NLCK41034759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15cf4f7d2fff524f6cde1b888b356c19a05f79a45e578a4f968f534716106f9. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/NLCK41034760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8a716e052c8a5463b4aea92315e3ede749dbfea7164717dc70446cd9191b05. 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/NLCK41022922.
As We Look - Teddy Killerz & Malk Remix / Proper Things
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4b4274a60a9d85e35f706c6192d4a5247f438efc95413ab9a634caba1b246d. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/NLCK41019708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf320c275fe72f9d4c2783335f3b945b51f1593a92f2543bba6d07511fe20f50c. 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/NLCK41014697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886803c60631b2c8d549556bdc4e4b673eebdb0abc250ae8c645a485e43aac41. 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/GB8KE2416076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ec9c653ec834c40d005891003deafab96340a93f5bc413911c49ef9b38105b. 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/GB8KE2416077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2dff8c6eb07add8633c9b9d9f18c847e1f2fa535ced591c7717074660fddcc. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GB8KE2416081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48805219dca7d96b940b22c231e9a7a90781e22fb1a0bb3598c28ca3aceaac6. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/GB8KE2416083.
The Voice of Ekou (VA Remix Compilation)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3edd727368cbee0bbe3dde16baa8995c1fd5809a09facbad34effb93ce9b32d. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/NLCK41080102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b681b68912d47ab65b9c5bd9d83d4f8f1a0e429d62037eea24cd161f1332eb3. 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/NLCK41080108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48842b65181b8d2c588c1bd314fe591ce135d9b594d585c3b02ffab3f6bcf22c. 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/NLCK41016189.
Black Seeds 50 - The Most Nutritious Seeds
The Wayside Chronicles Vol. 2 - The Anunnaki