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 0x327162c9ff93cf9bc1b9d6b7e527a76e6c7778cb59c4af37436c2487359ee121. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f64c92ca-68f7-40d8-8fdd-ed19dc92c621.json and https://artists.proofprofile.net/proofs/artist/f64c92ca-68f7-40d8-8fdd-ed19dc92c621.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 0x747777cea1754fabfb7781b77bdf5cf17ba2c4b08b7eeef60c2d0c98aaf3b4f4. 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/GBSMU6483668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0259223e72eaa127892c4f0cb8592e0d86673ea34bfc5d27a108b68ae3fe85b1. 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/GX4R52152698.
Dont sneeze (or they will shut us down again)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3533e0701bc27617720a4b3b25727e7683d492fe4bc7e953d3bb8ec7d318d25e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GX3HH2305940.
Making music making love and making memories
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8001670d1705519e572b6bc37f5b10f2098c3df9bcdf58b64e9f98ae848649. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GX89G2408281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91a6b72eaba9928ea0b8957c3a5fe792a31591a9f0b0805b3c3d9a0ed61fc53. 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/GX8LD2406444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22609b832369331c4342630f7bd9225f2d5f03f81f17829ca82ae3ff8a3f41e9. 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/GX38U2467501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1a494dbb110712489e3879e2cca52442f5f3b7d77fe7178a1617ad4eeb4658. 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/GX5MX2479536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c07d8c6cc5eb2a0e52af20214ee0e4c7c4b8c2ea6bd326ef58fcdaf6515e670. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GX5MY2491771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51b1e9103efef65e3cc6a4d1cd9ec2377ef6f1591fdb3611f7e78426c548863. 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/GXESV2463744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906376326a9173ef6d3aa66ecba45677aabbea97306cc260ef88db07fd07fa8f. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GXF972420554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43971bb47afe88463532cfd5e75a48c560fe2e362972b4f4e52926cdeadb515f. 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/GX8KD2506561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69db97a3d020c8b7fb1660217f11d3d163474bd7d1d897d0b69d45a6bd768f32. 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/GX8LE2544227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba8d7fc8da8a374af91f504ec07e8153643854d4664e29d838d3390885898d3. 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/GXBDS2512937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6167b222e1b5012993adb4bade50e202c709118a9c7e6f1eae23cbeec328df4f. 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/GXESV2542452.