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 0x44f607455897d8f4716a2880d95312f38551cd240f7d8502e73aa102e735099d. 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/08db5357-697f-48e7-bdbc-dd689305819e.json and https://artists.proofprofile.net/proofs/artist/08db5357-697f-48e7-bdbc-dd689305819e.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 0xcb3dd440680289e333c502f924d7238acbb2e2ac2197e4b6a37efe2a0027ff27. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USA371012788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cfccc2e200107f684b258e263aa4bced433e811dc649040e34ae4302471657. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USA371012792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d901486fa89b8731167525c0e04fb98d4d74b369137d3959cf423b3b5eb91d. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USA371012793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de9b80693cec6cf7f84205b132e42f53283d9cd041b7f919bf45e8cf7f18acb. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USRO28620522.
This is Jazz 30: The Dirty Dozen Brass Band
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa353609fba01882636693101cf58a166258335328177351850f88636e9e2db25. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USSM18900146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511e3fd6a717d81390f388b45305fac4584466535d834f41704c32c0013d6cbb. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USSM19300254.
Open Up Whatcha Gonna Do For The Rest Of Your Life?
Jelly (The Dirty Dozen Brass Band Plays Jelly Roll Morton)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d124857d43f036e37b11c09b28503559ba7bda223165920ef16f92b2b6e7e9. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USAR50412831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622c131d8bcb57e1a954739a92581688697f94b47f9e69d06334fe20a2c1d5e3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USAR50412832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c0a9556637fb1e4cfef2eaf1b4f63348fa3cc755c1484bc67585a400602a53. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USAR50412839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329d9a2757a3ec4b414a63e74825c3833d89933330abe8a2e603e7e5cbfd488c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USRDR0100095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4202759fb37c19ebcae02e5f8b4294b100a454a6d2098751931c09d33e804f34. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USSJ11200160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86111d3ad59696b8cbc6bfef669548d62463a0fca04580fb67c898d1b0f5e21. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USSJ11200163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15065da7c0ba6ecd1b7d8a4c4301c4ee6b9cf5e36eca2791d8a8cf4b9cd4fdb. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/USSJ11200169.
Back To The Crescent City (New Orleans Live '89)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd8c04d577c9d640d2dda55c79157ef82c153e688854d864a5f4f8c808b173c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USWD12432068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d121bd621d1b62bf86563638bd263bd6af8e533b85082ddc83b1e36106b251b. 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/QZTB52356454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c48cd5f3dadcd616adfd73f6613befe63a4b911467297484aa700b3e25d4de. 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/QZTB52356455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66bb858e643180c5dd0392b3dd626ac6dabeaf0531828b9d4f21f4c48f62a48b. 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/QZTB52356463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68db09a5b3f1948294f6b07c77eebe425ab73e04a22f6257f5fb4a17301dd29f. 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/QZTB52356464.
The Musical Mojo Of Dr. John: Celebrating Mac And His Music (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020de0c3b651c7c36f33e48a44e63fc17e1b1d2ce3d59837a27ff90aad3dabe8. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/USC4R1605365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321990625270cea69b8bf9ca05d13017313a45027f183437aeb0899dfe800d86. 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/USNO12000259.
Jazz Fest: The New Orleans Jazz & Heritage Festival
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2b6bebcbb929f82a22fd612465c64f65a2d27863814fcb6ebe5423c5ff511d. 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/USSF11925022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6809a3c1c9a4a5b38bfbc0f56510a64f94666a5f28cd692009623f63fcd690. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QZTKB2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b95d10e4c9234d368d1482475ffcf60ad9d65dfe74de5680f00f2a681e76060. 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/QZTKB2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900a71dad2f554d2d5a70a544f50a125c50cd9792605efa1ac6b8fe3de9b57a8. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USMA29919110.
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