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 0x3c4ae4d4de7a6d6dda50546ffcec53cd59eb1299ee47cd34c93ae71c7f95edbb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/620965f7-9af6-407a-a8bf-e8cc98693094.json and https://artists.proofprofile.net/proofs/artist/620965f7-9af6-407a-a8bf-e8cc98693094.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Poet Priest Voice Memos (Voice Memos Demo)
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 0x8bd843c1159396934132b78d088565adfd65bb0ebd46fad0f20c3a5f061679d8. 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/QZK6K2123508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c5fe6b5f3711355299361735b67d41b13edb06b87084320d35f64f5096e653. 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/QZK6K2123509.
You Bring The Morning - Voice Memos Demo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff48ce3de712c20b265240b15368d5cd81ce2a05b8452567f99d380bf6f5bd45. 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/QZK6K2123511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a2e14d778b1a0599b95289864c5e39527f1aaa1ab1f7b24f5e344160c06e17. 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/QZK6K2123514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82423ffa535990953ddc1d0786b4cd7f396b7fc006e782659ae27d15a7e2e811. 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/QZK6K2123515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cc8490d2cfcd0c6d92989760f1f72c22b5a305f5b13234eaf2835d32cee262. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/QZK6K2123519.
As The Sparks Fly Upward - Voice Memos Demo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42929e40071e107baa45775438911b559e4f405f93c293d5e0358417996008f2. 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/QZK6K2123520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee4b9d7e5e7f31f92c534c9c339a6b32798baa7031cf007fe97d3e9a521e22c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAEY2006294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac03622a444f50dda0499c6e1f68a30632499b4936fa6fe878f72956093bb726. 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/QZFZ62123358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6fa10177174d66484ffbdd054d1f25c065a5b8fb42ade65d214007bde9ca04. 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/QZFZ62123359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2590742d08bc403eac4c70b6912625e171ca32dc5ab455006566f7cdaaffbb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAFB2058964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad78704e229cc80f13fed3a8005127f60bd2714714cfba16f963cf714c416fd1. 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/QZFZ62123360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a9adf0e920a437b23df4725a1badbbfc5dcd024095a749027b8ad91d44be68. 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/QZFZ62123361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af15c6b3b421e1c67d8450afe5137876830eb25ce6cc630fc9321537b78800d. 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/TCAER2081913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48455e385b843538c300f9ae1410e7c9eabe73ad8a740f246d2325a88c4c4e3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAFH2087848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136cab71db55a98f37a3cc900c6ec92bc5168095b436d58e2d28f862dc1e73c3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ62123362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f141cb16f6f65c1f709c976bc3f68a133188e24d31478da99f7bd4f13f75eb2. 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/TCAEW2043680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff0964397914521cad66fae0bc937c14e545175f1092ad4011b06d261c80753. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM9AA1574600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33178490a6183378ebd802a97a4065c59bb2e27464b5862e92cd7336038a877f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM9AA1574601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b713258848c597094302d2d2c9e9252e1321ca4f86d4accc77fe2822736b30. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM9AA1574602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9861d2c202acb2f7a51a62712602bb6b1e9282288daf8911a64ee47f3000fbb1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM9AA1574603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9146fe44476d37e624e737f2e8f36adb5afff0e5cf0e2893c5cc5f72f701411. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM9AA1574604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5943c222354b8c9a3d654b1fc213b7a1c0f2515e8d18bf92d1fc0e3da25104. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM9AA1574605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9eddf7dfcbca0cee6065f6761ffd78dee84e7306803b9bd2d601a7175d6fe51. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM9AA1574606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9dfef126b2175871eb5028a11f9c278869094c96a3c40160935cb9fe42db882. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM9AA1574607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48455e385b843538c300f9ae1410e7c9eabe73ad8a740f246d2325a88c4c4e3. 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/TCAFH2087848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2590742d08bc403eac4c70b6912625e171ca32dc5ab455006566f7cdaaffbb. 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/TCAFB2058964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee4b9d7e5e7f31f92c534c9c339a6b32798baa7031cf007fe97d3e9a521e22c. 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/TCAEY2006294.