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 0x9979deea0840cf201f3391936c7555c2355f723e9f3054f574aeba856f08672b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5467318-0fd6-4604-9902-939691ead32d.json and https://artists.proofprofile.net/proofs/artist/b5467318-0fd6-4604-9902-939691ead32d.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 0x478dbf324bc6fb1e317262abdcff09695a56ffcb7bcfc58fddfdad52653672e0. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:21:53Z), 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/QZMER2041523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae45156bf97a2a0beebca6331873cbe9789cb931a7db7964d779fb16203faf84. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/IT2J82300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf093f5db29b318e9a6727ad4a3fe713809f32f7eed42c017ac204c5155f33fc0. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/IT2J82300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621d5212224294190b03ae316e65dc7f2bab3af79088f2ba0e7b971159c4a1cb. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:29:33Z), 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/IT2J82300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a247dcfed3c714ceadd09ba2d0e07f6ada88a9b242c243594466a090c8139b6. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/IT2J82300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0188d3db876a52607ed79aa82f6d8a4c4c50cca0017f6626e8b25d4d485d2786. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:27:09Z), 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/IT2J82300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4605dbe2ce797a5ae4dd99cd552f6d7fa839f74783d8e24f80679150fdd13cea. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/IT2J82300008.
ARCO & FRECCE (feat. Altea, Alice, SANO, specchiopaura)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b96b44da11882bb5542b8ee45e0779fd130a81b685d8986d58ed985eed481dd. 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/ITFR82200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca5b980ebfd040ec0f024d0be6b40a4013128c032a2a65c31cf842a89fb91c2. 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/IT2J82300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d8b1acacc8c2ea425a192d5c821a1468a4992754d42fd3b41c91bd77b72360. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/IT2J82300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02753d8f8d269c8383e94f3ea5b0bf39989144873f214d39b6b77e714eb84a3f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/IT2J82300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e637d3f57b348e1aa4bf6765220bcd10ad86cf5c08e5a61eb9294fed0aefd3. 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/IT2J82300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80566802b57c060d47bbb943297914f4bd34ca1b1ec596c1bb59ee05a7c498f. 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/IT2J82300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d7de76e2e336e385d299500dd68e63c6072fd33cae3e65deb2fe05a85215b8. 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/IT2J82100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea729cf7954072f209c0df110ccb09c7595e827e515f0e8cbcd09ee88e7d3898. 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/IT2J82100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0766ea920db653e3f02ba39faa0c7b96acfd4bccc217973c862781eef8826d7. 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/IT2J82100043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108f6e17b0eb3e3c49369f102cd40f9482653430a9f94ee8848b8eded6dcc2dc. 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/IT2J82100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8db9f2eb81f502dda1362f0e91221a2981af4c08071bdcc42e86eb97d5e1cb9. 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/IT2J82100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba4ccaf7612d11d155b27aab3066cda79d9a60f8a71fb2da1d46aae1392da17. 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/IT2J82100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa07d8cd91272946a41318f80678a3814a4c7d47572411d6fe783a0cd88bb649. 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/IT2J82100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b96b44da11882bb5542b8ee45e0779fd130a81b685d8986d58ed985eed481dd. 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/ITFR82200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c0a78c9c08a787ccec762e51079a67ebd870196a867ee4f5aa0330ed8aec04. 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/GX53U2389581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd1b7c3980b0d98b08feebdbaf4727462f1b4c402e5bed1f34414f470983f6b. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/IT2J82100055.
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