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 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 0xacd961a82b2571fbf246cefb3564b0e4eee204151067d4b85fccc049a08b75ab. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/53799c8a-be1b-4901-a3cd-f1654bae9bf8.json and https://artists.proofprofile.net/proofs/artist/53799c8a-be1b-4901-a3cd-f1654bae9bf8.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 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 0x3cd8f2f0dcffc1b013f21fab7bbb28c4d9c55d73dfeaf814b9b7940f5a83914f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHN92366405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86fb5f1b4568af948a97032d45ff0649b5a61b273857bc8d1515f82cbbd017ac. 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/QZHN92366406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607cf54d20b917dee55987070dc00197c609775fa5915168df64e783eb7c77f7. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZHN92366407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0433f5bea46a4357b54e598cd0f50f727c3e623e1d5fb9032ffb5fbae9b1ad8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN92366408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fbefa36b1212d3a60338fe0a6a961f7124baccf97ff58ab5414ba07ccf3665. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZHN92366409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841e0094822aa4fc535762243e3dd4d172d43834d3567f5b4952b684bf6f46ee. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHN92366410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5118f13334905944e32c303ca4bf97683b167d2b249262a86fc6c54c9a022331. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHN92313796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566931878841dc386620c015eda683d1ead8ebbf9069c04841490220130e8420. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN92313798.
I'm The Seeker (Maybe Each Your Word Calls For It)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedd1a554ca609088a31e5aefe7718e35d48d53213af5428cde47d453dddf950. 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/QZHN92313799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256164d16b00bfee5a74e54d6624c41c9fa196dd80b2146060a589b4113c8541. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZHN92313800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45be81a4a2a526150106704fd200b0ffccd2653c773e311b4b72be30051889d. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZHN92313802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1a10f409af9f66e0a151f0806b28224441fbe196aa17e9a9c7d3fc7fe0bcbe. Chain 2 (Bitcoin): anchored in block 957737 (2026-07-12T18:02:09Z), 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/QZHN92313803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a9fcc57851f49e863605a0fa68e545bd643d255687f5f95c2c226abe204999. 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/QZHN92331033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01919ada93c6666120080914f3ced2749d7d8c0d95bca7875598152078c54966. 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/QZHN92331036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bbc7446bd8e8ba98f17f6440107fc3e0310f8839a5305a1e998368bd75d893. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN92331037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbf576c144060ea821885f7f3c4d6372b7b83f5f1aa9e5499fe56075ad69760. 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/QZHN92331038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb65ca2c13813059d84a6118ba3052bc5b49bfc231a5a64947f783fc155511c2. 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/QZHN92331039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc243a1bc1fd8314f6e73adb8092a856fdda1290b6d67905774e0337afd0ad713. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZHN92331041.
Each And Every Word Leaves Me Here Alone
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95803c342e548b54d29bb5b72a8b588d27f2a7fbe5658c4655f66a8bf053c7bd. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/QZHN92369194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58652e714360a2049ee6fbe905801bac2e1f2e20e0469bee71560399085e3f3e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHN92369196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844232b4c19dd120e6b40d2a7fb03f85cff6a424933cfafeee7072e2947a4a52. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZHN92369197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa380bbb005f213e3ae2768e81fdef50d49e2b5eff08d0e52b7bb3838ca0a2e8c. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZHN92369199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3834f58be476d62db5d32694f305fca5db1b99a920d9ec9fd76795bdd4c69771. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZHN92369201.
Stories That Last Through The Sleepless Nights
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2304fe6cc9c207d5c327eaae92dbe94806f0315eb49ac82b2f36daa7642519ae. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZHN82369969.