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 0xbcb9554068a7cc1949b5f575784c7fc94af23a78e53c7c9eb51147997417f255. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce9c859e-8ba4-4172-b7c6-8b605126fee1.json and https://artists.proofprofile.net/proofs/artist/ce9c859e-8ba4-4172-b7c6-8b605126fee1.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 0x5a83e244016c7baaf0e883e8069e9f012fc8b4b25ca37f65dc7d26af993bc4ab. 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/FR9W12404300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7995d9844ab16f54fc9518f3e457e0745e54c4cf1d2f67c922999ba7f47a098d. 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/FR9W12404301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990a3ffc2b5381d6cdf06ebdc5eae742ad8b72df8af6713c82e75d54f445c622. 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/FR9W12404302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d57b1a1d968292d90f96c80c3f4c82965a78a5684c381b55d6bdf344eb47631. 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/FR9W12404303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3430235228900c62cb15b87fa50ee78ce2f0201fbb05b75c01ba66868e41d2. 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/FR9W12404304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3a0af7530fa3562abba6c469dfd018507a38f148efa225beb03bb93ac31ab2. 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/FR9W12404305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc121152bf25628deca97f49b2079445592befeee28a88384b737b8a044221d4. 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/FR9W12404306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0322699e0a74f250766d05512fa7804648dc4ca104ea4b41da1fbaef90f944. 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/FR9W12404307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0219fdfccdde316a6de7ed7a9988fd26fbbb89f5b731372a3d858d296fd4c9. 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/FR9W12404308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b42f753b0290382e9def21857c798d49094a559faab8abbf6595d4cf518972f. 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/FR9W12404309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeadac150b31f2d3b268923ead244c27efc1abf69a63b8977ef430d39787e849. 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/FR9W12404310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ad672549ffa6c665a935adde8a4e23855691cda7fed2d9b79d2f098128d83c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR9W12404311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304b35289b12c2d2b3c8d6562c0c2ea05d7355f74610171f26949b3432e7a90b. 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/FR9W12404312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304b35289b12c2d2b3c8d6562c0c2ea05d7355f74610171f26949b3432e7a90b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR9W12404312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a83e244016c7baaf0e883e8069e9f012fc8b4b25ca37f65dc7d26af993bc4ab. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-21T17:00:00Z), 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/FR9W12404300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b580fab496a8546736444503ac9cbdd421f5c35d2c19f29c552bddb4744cdb. 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/DEEQ71911908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9878caaa53a9e098a9a0958bddfd61a1d8613f1a271cdc4623a8cafd883a5374. 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/DEEQ71911912.