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 0xb0cdf981c26021545e3eb4168ed3d81c386f49652512fe2c7714ca86ad7f1309. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21ce6bd4-809e-4f91-9e76-1f593ac05614.json and https://artists.proofprofile.net/proofs/artist/21ce6bd4-809e-4f91-9e76-1f593ac05614.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 0xd5263533fa7f0daf5b827f48622955015597408d0108b1e2418b8323b5c67ade. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ITQ951800375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b56a024f178ab64a19c105c520f1e4f08cfbbd1e6e0d50a9e2f71cc05b7d3c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ITI020000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e176b30fa8b0bf2dbfab112834ee5424bc8065df7e87b38874d3fa6488d6e5. 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/ITI020000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07798a7aa7e277bac5ad3d3515aa5d9c8400858181ab73ea5e75d123d83edc3. 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/ITI020000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9463a94cb026be8edca54de7e8fd99450c490caa7cc508fdd93e5dd951c62f5c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITI020000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383d48d5be4c7ceb1e0e4af4534bf1cfa3114664c9b8d023ba8d8972820d8eec. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ITI020000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11de240ca2571a1d12e825a0271f1f0c4fbf84a3700b2cba52da64aaf6ab8e6. 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/ITI020000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b18079b0a86ff2ee4bc8147e2f17b1d82b8f12242483a757cffd8f0b335283. 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/ITI020000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a617111313928666db7436b6492dc4c408f2e6827410614731b6f9274224ebe. 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/ITI020000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee85bb5a120653a145855b6406813770c9e6e2cfbdaab78e50ad94468bb4f601. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ITI020000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b939519b21a77c5ce2891a7db8d9df1c0a9d5736b8335bfda6d5ba5ca74d24. 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/ITI020000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38c6b58d20dc2fa32c6df6d73a167d0f1d49c2bb9a7cacaa49d0500cbcc389a. 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/ITI020000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7943b1809066d4804bbba816c7761eeee6dc1b9b8bf271a9a6389168baeffe. 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/ITI029800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e80d6d5c41f49759985940acc165143448af46da8fedd75def40a51db903cc. 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/ITI029800041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98528c22c0298eb162866dc83505b63823a8c93dffbb8b503a67d6f72eefd33d. 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/ITI029800043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548d14d35b018c53a685037c8ea9bb63bfa8b6dafe105bdea4a686628751442e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITI029800049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6186b100cad966162b4a9c561faa66d4d60eae548208ebbf98fb793af7b52560. 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/ITI029800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb26a569b488d758475e881d1a305114666f88a221c5692cac9dd41fe7634fd. 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/ITI029800054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4d9fb107e0107cc54c38486f4d795d908d5312d09fb48d6e83f997ae1f8677. 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/USCGJ0801192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a07e8a1b2d18d80d38d763bf5eb7a1afa422b06e1fec91c42a31d3e7c3c2fd0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ITI020200278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0cbc23ea9d285f7346ad51c0d378e6f37fb057c149272c96821713bf9e79c5. 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/ITI020200014.
Il caffè italiano: Roma (Italian Lounge Espresso Music)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9463a94cb026be8edca54de7e8fd99450c490caa7cc508fdd93e5dd951c62f5c. 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/ITI020000036.