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 0xd0623c8980b8dd87447c4736b06d2c6cb6671bb25c910d7f39931c5100e8aaf1. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f14ebd2-f829-4de0-aa64-91dc56335679.json and https://artists.proofprofile.net/proofs/artist/9f14ebd2-f829-4de0-aa64-91dc56335679.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
United States Air Force Academy Band: The Big Blue Ball
2015 Midwest Clinic: Eastern Wind Symphony (Live)
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 0x93e727d27262b2ad6ca5769d3d4602512aa7c1927f2745f4613da05744f2e4a6. 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/USVZX1602306.
Escapade: Music for Large & Small Ensembles by Joseph T. Spaniola
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbef02b7a05185e862147f7628fbcc45ffb6a759903669cf23ccf65e7d885f67. 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/US6GJ1915705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5dfc23d434ae5f9f392744695704de3ee0181aa0e7d2d4f06de949f43e7aeb. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/US6GJ1915701.
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 0x639cc29098628ae8c4ba85e73991d226b45ec5d5ab57f886518285385060cafd. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USPMZ2518801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f08e088e477dde96b9b1eb831e62df5fd989512612d93519d595c3c4f30e15. 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/USPMZ2518802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0949233f1762eb464fda7f101b79c4f51d83da2099eb09a8f2d501a23b8ee0d. 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/USPMZ2518806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40b8b09b8b00aa4407b0c17c1be1657f191110da0616d18acf75f8a2386747e. 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/USPMZ2518807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b17e3242e708040b799fd1ffb1105a01b84528f37287b5acfc9c1161b8e3bc. 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/USPMZ2518811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f926121959bd3a63e908af86e3bb53b127cf85bfba9e5ada8cd2ac3fd52d37c. 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/USVZX1615806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c39bdd879f69177734b32636589ac59605879dfe4aee69c510098677884837c. 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/USHM80890988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d1cdb4914ffca71b59afeaf9dc616ca6c1ec35c57d14b188d866296556b743. 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/USHM80890989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c7a62bf7bdac214497eb132c2f6e85481bcff1d83175312f51ec54f21b34a5. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/USHM80890990.
Pinnacle, Vol. 2: Contemporary Chamber Works
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10c2e2532b8fe0404a0939643d4266bad03869085ae3a3079567520395841e9. 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/USPMZ2116802.
2017 Midwest Clinic: Riverwatch Middle School Symphonic Band (Live)
United States Air Force Band of the Rockies: Fantasies and Heroes