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 0xb5ab573a33ac3ffcd3059b4a43d61257130b0b67dbd64b9562c8b92bf684b586. 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/cf2b1e4d-ec4c-41da-a99c-b460c8c2bb2f.json and https://artists.proofprofile.net/proofs/artist/cf2b1e4d-ec4c-41da-a99c-b460c8c2bb2f.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b5f30308fdfae61f3d2fe486d7e82b5b7ce7866633635bc8714c9249a524bc. 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/EECF10900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ae898872c5df2141c402cac5cc3bcfb9b3b98ec9766e5388226d48fdcaaa16. 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/EECF10900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ccc1e4b813c18ba75b88e23da1dd9b7939422d218b7c608c2e6b0914bccfa2a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/EECF10800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0c513dcffcd3d50f5546576780c61de52bd4bb1d436d8ccf4805408419cc2f. 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/EECF10900014.
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 0xb4452e4e78df390cf2f9ca67c405a9e52af8a58273d26396b87470df53de2442. 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/EECF10900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abccaeac20bfab1b5d98260863a6212ce24866c233cbaad56bed3964ef5f3a5. 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/EECF10900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854ad221fc0d57a516e00e21d9f6a62afbbf029169c5e23045cbed8e24f7c794. 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/EECF10900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca71a2328bbf6496c42ddbea06ad8301f9a9f2c08fdb65f352cb3ac4e6b1465a. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/EECF11505000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd19ce0086b9f08c6506ceef705443e1129190f6b378f7786f188e1b37e4cdd. 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/EECF11705003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b910cb59a10a4896ab3be07110f9f0440bfd2b34cdd27c46254ffbc909a38ae. 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/EECF11705006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59c3e66812cbdc58909431f7de3c9e24f924d72251e697644d487429d2f4be1. 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/EECF11705007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa557e92891a6748a4c272f0d524420307d4c4e115fbf7e4f63b77f0a1cea98d6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ROBRA2503237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2ef34f21396b762f76ff74c18b345bd6b4adb477e1e80412fe7b24b0010b3a. 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/PLF241401390.
Moonwalk Street (Deluxe Version) - 77 Estonian Hits
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee567482d8e32cc0883640f066fbd01cfaf90a775f4fd6c6e03d993dea18365. 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/EECF10700109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8516535f657677f69bb2c42343352223dde3dbd6d04eb2a29dfe7e205bdca6fc. 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/EECF10702030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ccc1e4b813c18ba75b88e23da1dd9b7939422d218b7c608c2e6b0914bccfa2a. 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/EECF10800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05440028fba007c7cb76fce54916c7a5bccf75ce55dbc7d03468dcd0d6c88792. 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/DKER60800901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cd26288f3ab63ffce6893a47114e34c9b13bc58b49cdb7df452a459823de36. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/EECF11102020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e418714ba9c7f8bcb315b1b9eea184c27a1ff5bcbcdb005400599f87e43d269. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/EECF10700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04045cdcb26d1e2503df7fd1ef248fe5e6af196678deaca130263cc764a8d1e3. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/EECF10700108.