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 0xafc060baf72b1f8dbd231af007876d634152d2e682ba27f1b63d4cd3cc3a7edb. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fce1da96-3c0b-4f50-abb2-ebb0455040fb.json and https://artists.proofprofile.net/proofs/artist/fce1da96-3c0b-4f50-abb2-ebb0455040fb.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 0x27a63ad37232dd17f400710c3fb71368a411c95bee13e8cab7bb42144d74ea27. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:56:50Z), 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/GXD7V2565068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fcb1df6b22a985c3384d41ce5df86f99ef0259b78ca5e43074b8f59d141abc7. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/GXD7V2520445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3eff8a6a32407def1b581bb6a0a10736d8fdc6c173ce0999221bdc58f346c9. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:37:31Z), 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/GXD7V2533615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60be15804d02fb5467c0bdb3d0da9cbf7e730bed05424b6ce432fb10ea5917fe. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GXD7V2565773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9a01e3cf722248333eac0314b98b04eec12e2fb97d0cd456150dff78f9524b. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:35:49Z), 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/GXD7V2590422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a9152ea47c8417fd66700c9f829444bb417faca464ebfa8c4267e9d3aead94. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/GXD7V2547495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246a5351445f79d80bfe47ad10fe8d59a4f026728e1ed73e53903e2f577229d9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GXD7V2506153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f37b74786442a9429f0ca097466b1fb38861cc93d82026d4581a0661f29d2f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GXD7V2595843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e46dd0feb14e04e068e434f48e3336cc77a9f1b6ba722c1d4abb8add1532fd. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:41:36Z), 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/GXD7V2504738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cb859007e37c0c1c28f38cf851850bd9d7929755a66b702507764b0dd588e7. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/GXD7G2522048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a78378544f0232a9168466aa110a469d46eb5f1b085f1c01cc53fde1db6cfd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GXD7G2588472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6a003321720062e70d9ac9c62b2bfbc5fa86e82744d334b1a4ca632dd0323d. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:47:39Z), 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/GXD7V2503260.