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 0x8fe3aca709704e2f1d583406482a8d9fbfab04da4442425a898ddc8381a212c8. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd25363d-58ce-4f4b-b693-4610b4f225e2.json and https://artists.proofprofile.net/proofs/artist/fd25363d-58ce-4f4b-b693-4610b4f225e2.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 0x0cea6f4828f088875dac842417acc61a5a30db9499d749ebb0a215bb033f42bf. 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/AU3UG2200156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb780aede3f27957b3a26c19072c6a83979772804c3109cf3fe5f7926201703b. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/AU3UG2300050.
Colossal Music presents Umoja Sounds + Fredrick Mulla - Unexpected Glitch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11287f43ed8be46644e56e180987ca5c6d9f8f2b0f61208820fb5cff025be862. 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/AU3UG2400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff2d27b766effb254fdf88555d389c58187576c4ce74f6045adac7a000bd5a5. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/AU3UG2400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb37a5ac9b56870fc3de6bfb68ec82c3f612289367ec6664c5c9fc8650c3d3d9. 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/AU3UG2400029.
Umoja Sounds Presents Flava (Slowed Down)
Umoja Sounds Presents Flava (Stripped Down)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba046c2768ba19d46a6a263ab7acb8fa7263c08f7453a0fa6bd3aa0e1341d049. 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/AU3UG2400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aeab15664950ad8b056fdc8c7ee8b97f8091f06f4afbf5e3d2c2692885bec45. 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/AU3UG2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138036983b32f8bff0ad35df134b0c61ca3508bfa5aa5aa5b4aed38dc76626fc. 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/AU3UG2400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756bd35f654c376cbe9454bf949c36b8cb8247ef400a4b28b3195c663140447b. 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/AU3UG2300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc873e389e708d2325f484ab43609b7808b3c9ab7c5430a55e2d8cdf8d97e2553. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/AU3UG2300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd0d97b816ec2c9f438bdc612c15ffe2230549fa57ad3fa5e34227c0682bdf3. 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/AU3UG2300063.
PAST THE FUTURE - Smoking Cigars in Jakarta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6b5d159760358f6614ae2b55f05da6929196d9b2529f9c6786dfa45df79e86. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/AU3UG2300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bff3b47686ef3a3f585cdb90717e07539c940a1a312b813b3361d6e0223895. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/AU3UG2200155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac7b110331b439004b893015972ce2a17c1b4597f59e911863e5bced76ca813. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/AU3UG2300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa681089aee2b77f91d968570522052bc94fc23d8a2bbb114105f1684fd44e079. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/AU3UG2300051.
SPARKS SYNTAX: An imPOSSIBLE Journey of a Music lover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3a34023e96afaecae069a3374d9ec1951044f2defd5698e6944f9ab2799e4c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/AU3UG2300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95d6e75afb9d7d2b2591f91a07f2c0ade8353d3c49f74e77b7479f93ffab0a7. 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/AU3UG2300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc8a4bc76cf769bfe68e0665806fd74a13752374406b5ab632a7e781fec1287. 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/AU3UG2300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6075156ceb947ac3909b6ef75551cfddbb53b265c75ba1ffb289e76aea425212. 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/AU3UG2300031.
SOUNDS ALLIANCE Episode 2 - Uswahilini Acoustic