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 0xcc9a5c05b47d18e33fe335e9daf70711bb76f05b8de685b40c0749519e2427f7. 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/58b78d0a-c089-4fd1-b26f-ae4d8c9c30e4.json and https://artists.proofprofile.net/proofs/artist/58b78d0a-c089-4fd1-b26f-ae4d8c9c30e4.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 0x80288c2d05e170687f6effb5b536e1ab1646c2355385bcb3d182e2a6f3e4ab7b. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/UST8K1625530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92914bb5aedf43fd4bd6a308403384f8a872990bb7b5164a4806a09c5a87cc6d. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/UST8K1625531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8626586474012cef763a311eb504bba5aabf2a09bb19970c352ca79ccd89f2a. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/UST8K1625533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465259c2bc69ecfb7e1495c5f4d896ad031e82baa7a6cc950a3fe7b14336b421. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/UST8K1625534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4014f7af76343ac4047ac8a13888f2b7ce215a444907394abfeb7a5872673771. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/UST8K1625539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8d735cd58b58fc53071c7bdbf6692183c371cfb1dc105f111cf3177ba7d78f. 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/UST8K1625542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d70abb8a38a320cf762224014ecacb753d78b3391601c7e35510f1207a09d86. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/UST8K1625543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4731c25a24268aac0eecdfd54059feac0de687e7526fde72df85e72f4da114f3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/UST8K1625546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb212f40ebc6e5f08632c1d2871c3864a2c550fa1ed79adee1f6050a80c276a35. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/UST8K1625548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4931b360a23f95ad334af6743b9bc22bd238625f7d1976b036ff75d7a15aa0ef. 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/UST8K1625557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe199304a42c4662dac9217bcdab28c05967ff73945c452868ec0678619ba2eaf. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/UST8K1625560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b76c94ea1a43887aa020ade45b1d327109d28b80d0d3bd52b230915326f25d5. 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/QM4DW1782351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddc1fa1553a280216928acdbe5c08ea25214f00c8b5261a3521c89f230478cd. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QM4DW1782352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c2f71c7b9003ee07f3d607dd6c5db9f0c80a4772492737606b3b6bcdcd3c03. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/QM4DW1782358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54904c3281d3e7f46c0d1f1a8ac34558afe75b7d97c9147cbac7e47c0b7ffa09. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZAPG1712366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa774971a9ace2a3592d37753c847887e53500daa12595fe2f11f304caf6452c3. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/QZAPG1712367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d9c3e1c477043d58b931142aa3d243a9a7cf228dc51c5a0e1bdf69938c67dc. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/QZAPG1712368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fad8f6b2000dc1fb5f46185585ed8b7fd5b2d995932686918bf07fb5e664a44. 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/QZAPG1712369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6cae655b0e8a99d57927e5c2c390077600f8ddcc5aaa79c4d67b76fa933018. 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/QZAPG1712372.
Cyborg Deadly Machine Original Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a6dca69f5322b1b0d6a9ce4521aaa9a0baff58159c54c33c56523ec6a8bb87. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZZ762439296.