A point of contact (POC) or single point of contact (SPOC) is a person or a department serving as the coordinator or focal point of information concerning an activity or program. A POC is used in many
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 0xf0143dd9828cc39de4a96968b4eaf8d92146024c1146f7b62c06bd354df7b8d8. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7bef43d-53e1-47cf-a664-86838624946b.json and https://artists.proofprofile.net/proofs/artist/f7bef43d-53e1-47cf-a664-86838624946b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
One Scene Unity: A Hardcore Compilation, Vol. 2
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 0xaa694220673fd8d6c1571e6bb1c3d1d6cb32c7493c710c9e16de4505308c5a89. 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/GBMJG2115777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1f8861bad212f93645bc0379155e7b06ec566c3d8e2d9260c856d4071d865a. 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/GBMJG2115779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456df3fda4c72ff8a4f6245078dd655c8591dc00dfbc07895fb68e2a19d39230. 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/GBMJG2115780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557a35b9aff7f3d2dc499e29219a5b9cef107af1d40b31349b7b8e5d1b22fe32. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBMJG2115782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608a6606f3dc854c4639e44962e50ab1f19fe37b72b623eaf15e08d4edcc4cb7. 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/GBMJG2115785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0d20dc3ba22ae227bb429f9e4220edb994cdf1a8ebca707377795b06c1dae5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBMJG2115787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0298eb991f3af4a572035f4d53edc5984d48354e24242a9eda41ddf27d080f63. 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/GBMJG2115788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef23da87353017121fea6df86c6dd7a6acc5b258ac715b512457e27847fa26a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBMJG2115789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b89e72977c7d579b45c69a1b70fd799ba6a877f9a7a334ecc571478725c48c. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBMJG2115793.
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 0x47da609418fff1178d84aa734ee6993e23fa328bbf80d3874fd44b260d3da4fd. 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/SEYOK1943401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8959c5cb87a5ad2180f8c35254ab5d2454b66b1595c9e5791dfd74aeeea86ba. 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/SEYOK1943402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e0e0eba8558220c5b75e2650e7a37676294cfd2a2a50f45093955565f03b73. 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/SEYOK1943403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc245131a6f8fbfc42984c381ef3edfc4d31342ac0c0e072f53acf635be602df. 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/SEYOK1943404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84050b7c83b0914828191c2649f7fb1fc31780d35c8b1d306b8439677f6a8d66. 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/SEYOK1943405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff73660af7d510f462b7e008dfa48f5ff6137afe896e9272ddd9109332489a0. 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/SEYOK1943406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe67d1b9bb2fe661e166c564a7c36b04cdb1c60521029ba8a3f57157dae3945. 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/SEYOK1943407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c44b75af51569be0e65254b9f6105ea9b33b3f6ffd7f84de25807d317c46269. 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/SEYOK1943408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5641e95b56e88bb95f52ea5825a94d93132f03dbf4b05ba3a3fee6960b1d62df. 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/QZS7J2298020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008c62c41b1324f87dcb4d145e9fc9b7fa46432a784410ffb0e249945b5edc02. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZS7J2200443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d3be79c0a8c719e88cf7b824014ec953ca702b7808ac1ced6325105fbdad6c. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/QZS7J2280995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6aa532b0602b21690bda96888fa338c2d07599f8809990da2cc744e62cef62d. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZS7J2227086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1955b2d5b4c419c4ec41a12a9d71e45954d75071fcfd49a5e26cd7ffcf0dc64. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:25:33Z), 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/SEYOK1850776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11a05fb9727aecb66e186572daed29ccfc5e9be1995538acff7a73b4213d98a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SEYOK1850779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40b5965fa1988fb998c35f893d920af441bee03c515a8a566396fe24182fd30. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/SEYOK1850777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64a7a28d876730f71262bfe7e9824d030eea7e7ccfea3c488ab5442a4befb2c. 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/SEYOK1850778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7921626794a633748e727dfb32ed4c577f8f8e81a1d70e7833e6b6a9b81e1533. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/SEYOK1850780.