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 0x1db09ae7e29abd30952de49c2d1a437594379c9c3381ccd026b8d3e665479474. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e890bb17-c069-4128-9048-e6888ee8b905.json and https://artists.proofprofile.net/proofs/artist/e890bb17-c069-4128-9048-e6888ee8b905.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b834e1a925d6f56a314069da5faae4cf054dbeeb0acbc3ffd038f921e749b4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USJAV1010003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b5ae3cc45de5d4cc6d887cfa10d1b69d5ec4fcd43c00d453637dc00fada95f. 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/USJAV1010001.
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 0x697b2a6097ede0eaddfe441d1b397624d754d1239c91a896fde206a0a2ccbc6d. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/USJAV1010002.
Bianca Reimagined: Music for Paws and Persistence
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7a24f15804d91ebd7d091c44b4f66b9223cdb4ca2a3167b67ba4107be80a87. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM3JE2402472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569bd24c088bbb4d51f74fd371fcdb385da1a569a95a239a7bbf0c715b3c771d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM3JE2402471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc3181fca52aceb1c7d8219712f3504e4574238aeba03278d0ea429a96e6143. 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/QM3JE2402470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc677de4cf34bffdacc577637541efbca47d6e5753d4ba5df0db4c97dc2aa15. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM3JE2402560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c37fc1a3e41957c5afa7e36feccbe67dcca14f7ee173f7a3741a670d2b57c29. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM3JE2402561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ba0179d42dd4935ef301667f4d770302ab5ae9448db9587c589a212fa43059. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM3JE2402469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2187571c08dac47cac0115988f21f1e62bb51869aae9efb4d19f57fa7abe281a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM3JE2402474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d7f1b641ea87ed1a367fbace2c0069b97d07740d0e3e2e00cf23281a59bfb3. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QM3JE2402475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649e0a0bb89243d25ecec2ff3bcc9d0d18ea95b733a00f08d6cb38bab1b07eca. 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/QM3JE2402476.
Mahavishnu Re-defined - a Tribute to John Mclaughlin & the Mahavishnu Orchestra
How Deep Is Your Love (Saturday Night Fever)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd212b9cc55f28d0e3d4b1c26291198362c868b3e17cedabfa8489c30eaa7582b. 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/GBZTD1100270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38679b0c9ae65dc84ca03dba1449a953f018a2272a7543facc4fbeae5a4cd77e. 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/US3M82406818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f493b0abec45b2ca73fd1d9019175e8ef1a6fe2a241b84ffe0caa687dc16631. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US3M82406825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7042aba32584be35fec914ef5c488a63c10d2b58383ce51d8efe16f4dc9ad942. 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/US3M82406827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f8f75cdb8b31f2ebd15088bdcfaf7076d8bbd5f769a316a2a0c24d5533a57c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USY871100079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06fff0064b2c5cf7a6a968b25718c80638333084db79efb3609b70e19d74f1e. 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/USY871100081.
What Place Can Be for Us? - A Suite in Ten Movements
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379f2d903b973379b412149913b067938fb43e252caedb2fa1a6a1fd1ae8845c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMDA61532917.