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 0x1c18cb9c6e30322ea0b30ab3fff0cfe494d5375bf3309ea5a3254d421930e4e1. 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/3852ec1b-0f6b-4a3d-8131-86ac1cfdb7a9.json and https://artists.proofprofile.net/proofs/artist/3852ec1b-0f6b-4a3d-8131-86ac1cfdb7a9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x6a095b71a13f94f737b5d5bab7e20642a3c4e8c083271b0c27d2a32ce2300ac9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZ8B2374804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b92a8be5dfa39bd3f81ab76d4504cf976bcbbae46a09c9e746a35f7108ce587. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZ8B2374811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c6246a33d3d42f1141d28a110832a38e98b0b52eb14938e36be4efa4ceb522. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QZZ8B2374819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfa1fc1faa35e38e6d9e198c24dc1d3c973e3fffc35327dfc5d877261a41434. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QZZ8B2374827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1164354422d3d766b5617dec14b062aeba5afc72f77a905fa7da524c6a8268. 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/QZZ8B2374838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e66076e5555bb17058ade726daf1002ff86b6f74f7ab02a9e43cd0f1201124. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/QZZ8B2374846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2774f1148cd4cc277a35c3cc19cf39a2c2cabcb83c759b1f11338b764afca74. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZZ8B2374852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52c77b98cfc97d2c0b6af121596e93b903c938c951536bea34a42891e05542f. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QZZ8B2374858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5e95a798a4c74688f248289addce44d161bc8080f23ee0264a62c9050e6685. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZ8B2374865.
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Soothing Waves of the Sea, Ocean and Lakes (Loopable Audio for Ambiance, Meditation, Insomnia, and Restless Children)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54586887eb93886a061d0777d053a7ae019a809500a8c7133f48ae9f924b7b2c. 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/QMHNS1301865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae88b4c25db90f46e9a6727b94430c04d73f6f68b3563efe1edadf9c103f449. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QMHNS1314945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553c34a1561ec518f853868b689d30dba4658ff9e27b30ed0788f3bae4dc12f0. 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/QMHNS1309186.