An earworm or brainworm, also described as sticky music or stuck song syndrome, is a catchy or memorable piece of music or saying that continuously occupies a person's mind even after it is no longer
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 0xcb3e753d7ecaae29ef0e9754ce822020129d5d21124b91325febd205de9f68e2. 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/e28e1ee7-e76b-47b4-867f-e18c1a10ba83.json and https://artists.proofprofile.net/proofs/artist/e28e1ee7-e76b-47b4-867f-e18c1a10ba83.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 0x979f179b397a99494ce351b5e8461b913aa60d07c3dd820c5b4099b224aeb102. 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/QZMEN2391970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c4ebc779e242b59c3161baed6b190efe956bc9dae0d07b66616e93fa08ca8c. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/QZMEN2391972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f1b4f2ade3ffc23bb20ae7dbe1f4666dda9ea8278be387ae4d94463cb3d359. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/QZMEN2391976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34ef32af9aa2b9ce12c244ce443f07e193d9847dfd935c44b75180761d2db5a. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/QZTAX2389343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c55f661059042c63c348d0cedba22e9553a874719c49c8593dc68e0fb387287. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZZ762465030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e78dc250f89099de8b61deb1c4b3ed101a20f9dd43e2859284f40e3bbd9b941. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZZ762465031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494f5af0826f5d2637aafe08118f1191bc5eae9e9bbb1bd9adf2e47803b37aec. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/QZZ772483748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9c43d15e9ed1548a58a6ae00b215b52fa4e096078fee9aea0a3a1b2dfb5567. 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/QZZ7S2407302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d62dbc0adca8289b51e2484088e95fd43560ed4c7db4f0e155fc940471cf30. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZZ7S2407305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284d350852b81bc5e26a07bd4455be715e7641336de3bb0081edb83f0fafd111. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/DEH742303154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb28c30f6c06c361baf4941266db9d27f0bbd0bd754c9722c080f4754a9c5cbc. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/QZZ7S2404952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ff3f719c7da65ada10bb92421a7cb74d2315eea64f0c756244f5a40379e67f. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZZ7S2451341.