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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0a32ed9107d6fed5ce9e925fea60c23c6bd8d0e4d6ad4b53af9f6892342336. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a7fcd82-ed14-43ca-a6fa-3e7cad902b05.json and https://artists.proofprofile.net/proofs/artist/7a7fcd82-ed14-43ca-a6fa-3e7cad902b05.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Neven (Original Motion Picture Soundtrack)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd511f6d8330fb4f98f2493a76b3541a64ae7b2b7d2abdfcb9c02c79d5c7d42. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USL4Q2233097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af7e5fb4522dbba610754607f66968c2fa6406d78f349f3899fbf1366199547. 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/USL4Q2233098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9214193861b416f248e6eff51b216bbbfb3678b75681565b2f3dfec782e8acd6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USL4Q2233110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733b9ba1f90cb65f9e5f218cbd4b61f2f2696b1310981722373c5e1fa91e649c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USL4Q2233112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765d5e4deeba8c362ca1291cd8e8fd96f529be287d5d139b44f57bb752f383cb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USL4Q2233116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1f17e39a3d7867a0da8272bfb5cc13fa06697c828986f26cf52761ce10b305. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USL4Q2233106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3078e66a4a76a862012846a1294c7c26542eb757f4c0c7a0dc5459a6d1524af8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USL4Q2233119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f14985ee8bfbb358bdc57829f68722c83c25dedcda9e16cb9e9f0de1c634b0c. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USL4Q2233109.
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 0x8f597af056ace75aa0742081badcfa91352e3d4028f392b6733d6c0ebccb8edd. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USL4Q2233099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1741f9037c54a7fcf72c91c3206b73bbb66af7e095f37dbdb52805436116908d. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USL4Q2233101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1037e6fe9bcd7e41a594d516eaa8a7b96d713f9d0ae49eaab0f19a22406f2b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USL4Q2233113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68d65420711ba9f9c1094b2d1123610f9839cf6b0a367f943d6e69546fe7ae0. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/USL4Q2233102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9228207e47f18c9f434f386fcc5cfa3c61c428820c14484537bd7d81b20957. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USL4Q2233103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfae3f7aa904236567cbeaa3e487c75a2dd4e6d13b9aab10985c50f02fe224e8. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USL4Q2233104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342fc6f19ae86e97d50bf452e5375aef3a28cae69189c2d367778c3db57fa25e. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USL4Q2233105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11ff1461dc6df79562633ee5ae2c49ef21383e34e5b4afddd2633f8c3143f5e. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USL4Q2233118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd708fad25d0db4deb2305489c9caea5774e71e60c818ac901dc22228c6b6bd5. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USL4Q2233107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3578ad818c8e23f042038998ff4dfd79968e205eb55ca9149a03264fde2815. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USL4Q2233108.