Seventh Avenue most commonly refers to Seventh Avenue (Manhattan), a street in Manhattan, New York City. The name may also be used to reference: Streets and transportation Seventh Avenue, Newark, a
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 0xc179404155f5458692bfbf48e02304cefbf7e58c5574ae861559853850d0cf10. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bed3f3fa-816f-42bb-9f94-4e36d3354382.json and https://artists.proofprofile.net/proofs/artist/bed3f3fa-816f-42bb-9f94-4e36d3354382.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 0x063e2124ee2b12d68361e3e8dc922dcf284898d95e4793e04f52f43c51f76145. 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/USDHM1108538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4fb25f5567096b6088ab6dba3e3d005cd5683cab827b4e43f542bb1de73906. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USDHM0808519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f63c133c7619a3e8a079b252eade54d8c50a4e4a4a79b22b98c4cbbd20ff09. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USDHM0808525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712dbe78696973162794ffef6075d36e1b6506fbe6d7dbd1d91c0edcc0f638a6. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USA371114136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a32ddc5c313697cd635c622451fed1b659d6dc42ac301445192e7cb3e43133. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/DER370445502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3e0cea6e07989df66cb3d4762a9f06da56161dab084724db048c739f81a1e5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:53:17Z), 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/DER370445507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d551e300849421c87b98a4acab88192e84a05a357ade969f0345bd731f8c89. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/DER370859202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097a06bf039f86b1dfb7c9192fc748caa241d1f7c00530ef9aed1f585fd86572. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:50:56Z), 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/DER370859203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c64d3770ded4f73b910b05e35d203abf5fec9fa50cd72929527753722cb97a2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DER370859205.