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 0x679d7328c76bb0d019ed5166163d4ec47103c0cefc09dcccda5ae082dbf44383. 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/c18b0005-1262-45e0-9da7-9d9f74096e70.json and https://artists.proofprofile.net/proofs/artist/c18b0005-1262-45e0-9da7-9d9f74096e70.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 0x1fdc19a8ae8dad51b6d3846e34c9b7a48f143d08c52beff0dbc14e6d9bd84da5. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:38:26Z), 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/NLF712401465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a63407663d972efa5b81f8dc6d86d74a3c37668dfc9e4301c2d35ea82db8ce. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NLF712500790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a56caa1b7ec323d0bff0c15e22bde9f6942855313e5c81fa1e8491862a5a483. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/NLF712502871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19accf5d7cc7cd27558c523858c684aebd511f6f31f304ef0cfc6fd0a15b9efe. 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/FRUM72400728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19accf5d7cc7cd27558c523858c684aebd511f6f31f304ef0cfc6fd0a15b9efe. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRUM72400728.
Yamore - Francis Mercier & André Soueid Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5505e8e06c1ebc073bf6394d3606bc4846059b146c31fcca342433da91a1f9. 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/FRUM72401570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19accf5d7cc7cd27558c523858c684aebd511f6f31f304ef0cfc6fd0a15b9efe. 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/FRUM72400728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19accf5d7cc7cd27558c523858c684aebd511f6f31f304ef0cfc6fd0a15b9efe. 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/FRUM72400728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19accf5d7cc7cd27558c523858c684aebd511f6f31f304ef0cfc6fd0a15b9efe. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRUM72400728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e248e1a64f5db12145b54445b609e2bbf0bd8fbd30ded45a822071bb23518a0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRUM72401225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ea47703e1df44487bd4bb7a6e083c9ca1151a3aa898a7a343714e878b37a9b. 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/NLF712409429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e248e1a64f5db12145b54445b609e2bbf0bd8fbd30ded45a822071bb23518a0. 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/FRUM72401225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19accf5d7cc7cd27558c523858c684aebd511f6f31f304ef0cfc6fd0a15b9efe. 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/FRUM72400728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e248e1a64f5db12145b54445b609e2bbf0bd8fbd30ded45a822071bb23518a0. 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/FRUM72401225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19accf5d7cc7cd27558c523858c684aebd511f6f31f304ef0cfc6fd0a15b9efe. 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/FRUM72400728.