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 0x0006a70e314308983a8e937bdfc2c5d084c70938c0bc931e041bcaa7a2adb721. 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/f73780ba-77e1-4250-a4b9-c0e26e58eb48.json and https://artists.proofprofile.net/proofs/artist/f73780ba-77e1-4250-a4b9-c0e26e58eb48.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sleeping in (Sean Turk Remix) [feat. Sean Turk]
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 0x4d1f2e56b32a9fcd27f4dc52d963f5a43ddcc699d176022249185340bef42d18. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QM24S1802209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23697eace5b34c6f9199083f8baf41c503155774deee237c7cdf3cf9465253b4. 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/TCADC1775603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2253adf172eb9b1b01f0b606497dd63d0f39a7d7803a90058bdc82199c39fa70. 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/USAT21905264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1322f7dc5567f12e414ac745687bc3a228803868a6f0661315d3197ea679bd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USAT22000060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a5e1e44786622c859e098d7bd6deead7f152281998899b7369d6046e02df8b. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USAT21905265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05c5157910b79af19db84b245460027ff1bcf0888886daf49fef84a4accf6ab. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USAT21905267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3ef8abf6354fe655879d539df7c44435b2a4c1703ebdfeebf25b3b7f263a17. 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/USAT22007090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44cb89f880c47253f5563648097b1dd89e065e2b25bb66626cd5596f2ba66af. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/QM24S2401456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da809c6330c93b36128cb65e6416ed6fd11ac4a492e21eaf14ba1eae58dd9d2. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBCFB2000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da809c6330c93b36128cb65e6416ed6fd11ac4a492e21eaf14ba1eae58dd9d2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBCFB2000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9445bf7651c374d80c2751dfd3c457b99e5e91a6c55d3cf502eff0677a63ce1. 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/GBCFB2000593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1fe6a62f04de450a188b1c2ea4d71ff70bb5424ed81a626f13ea55cdb76c00. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBCFB2000595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da809c6330c93b36128cb65e6416ed6fd11ac4a492e21eaf14ba1eae58dd9d2. 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/GBCFB2000057.