P7, P.7, or P-7 may refer to: Aircraft Boeing XP-7, a prototype United States biplane fighter of the 1920s Lockheed P-7, a proposed patrol aircraft ordered by the U.S. Navy Piaggio P.7, an Italian
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 0xeaea796f87dec5f50ef54e79c2fd1a11e4bec69dbd2047046d25467f9838425d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee7710d1-1c26-42c6-a2e3-33230691d651.json and https://artists.proofprofile.net/proofs/artist/ee7710d1-1c26-42c6-a2e3-33230691d651.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 0x54c57f3776468cb8558f05865ef86b465d414b930b15557c8f6b9710da2bc711. 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/QZW9K2424844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9baf4583883ced1358c851d18344bf78e80ba92ef349f48b77f72fea54952162. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZW9K2441998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ef57234d09b410c49c9a16edbfac6a37fab6299c1cf10878f30f4f7d3999e2. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZW9K2457510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba43fdf79a5967799d0ce14e54c497e4b1ccf32d3c3872df1fae309dcf7ec1cf. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:03:50Z), 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/QZW9L2406424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a41f8dcfae4c55e23116c392d19894af31b6c71d6ecdc8eac17bf80748a089. 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/QZW9L2429428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8fe2088cb6816c4847c2aede7fec176ab1894701a851f247f6de419126e846. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZZEB2411354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5348612065575f3872429ae27d7d0e21c53aa6578fa25d077b7050026cb9d9d. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZW9L2454363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab07e42aa5d6fe82755f701283e0277f5ea8f930c8553b03804ad5b2b4e5721. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZW9L2467366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a499040a2435ba32fc76cfd3b6a8427a48230fbf15246cce96564439ed2792. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZW9L2484884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78267341488a29cf5dfc4925fd357878f05180163f8f985330e10dd7b1396fd8. 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/US7VG2526272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42f3c1af5e7cc4bfb4cfbc9fa69529f4c71367b52de1ed896c7e39cfd8e000e. 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/US7VG2568400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ade8c4cd214d5f53edea3e7f031ac7473a3780a0c6872c6176f84ebe93923b9. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:02:17Z), 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/US7VG2577727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c85658240a71fb7a4eb12b0d8a3f53082c23e2ec1ed8b22aa3c3ad9a8836cda. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/US7VG2577703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ee1cf8dcc5a639385b8322cf249c9068433e03762e729aa86e0b385612e28c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZMZ92562467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b99fbd39154c8d649f05e9a6f9be003a8c81b77d5ec16a1f439416581c33acb. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:23:29Z), 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/QZNJV2537018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1be5da60a72a11bab520ea6ceb3365e11c6ab5b881e2d367397bdd2790ed14d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNJY2549927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c92f3d7c6517e74e4d1caabe802b1b0477309b00527dd0792634a6a5449def. 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/QZTPX2595243.
Acústico Altamira #33 - Flores de Setembro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f2922b531d5e2c3fe07df80a3ac7802edd5e8ffc5c1e626ddb8bdd18839a6d. 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/BR9Z22400150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839131b9286c69236e1563d78d6e3eeb1bdda731fa02ac9e5ee143a52bb74aeb. 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/BR9Z22400154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b66be414f9f635ac8d171204d9a72da001d6aa2a96b7e6fb564535d1040d1d7. 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/BR9Z22500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3985956cab997b18281863bbc9b3d573268907b4d4e44cfe99a7aa39a36fa73b. 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/BR9Z22500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fcb1f350dcd785070572f5c6f9c1bfad57859f20267483f8eea03d591faf6c. 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/BR9Z22400196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d7778fa96908feee1f8b2d3fd1382eaadde808edea53ef5663638a29190d7c. 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/BR9Z22400206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf25ce0ff1b106123a788f2258c0dc86b9ac569d61be37b3d2376718dc1a89c3. 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/BR9Z22400162.
Altatrap #9 - Contrariando a Estatística
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1edb79197b12b5204b48f9e0d0d9f225f7bd4a995d628cc3016f00ffd15456. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BR9Z22400142.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1c46e69ca61859642e01deff7d963f32898807194102df71bdcb33b18c3591. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BR9Z22400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ace101becc8154af836221605c371b06fe6119def009189a676a052fd2f5f2b. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/BR9Z22400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf057e61445f25e074fd5f825bda6812845127ebfe3f4dbdc7add6815a8f27712. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/BR9Z22500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f765b67b00a3d1026eabf844c562b707076467ac9836f850eb927c65430ab4a. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/BR9Z22400207.