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 0xbfe983ecad940510ed0fe91e5ccc9dc3e75f02746c6f3af925b85a5f87173baf. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2901c575-d765-4dae-a2cc-20977a507b37.json and https://artists.proofprofile.net/proofs/artist/2901c575-d765-4dae-a2cc-20977a507b37.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 0xf038d56b3993141e023586a8a5c9c5ad35147a7fa28725cf7e780537c2309988. 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/USBNL0502001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be4e95a002668f10ae3597035e8522a735f355a8b186faa065b44593ec0e3f9. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USBNL0502002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b45e42b2f23a7fbaf5fecee67913fea5ab78eea8cbc8f920fe1ca8863c06cd. 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/USBNL0502003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46c4770108c62d6261607e9b686059683d98b4968a0233a7cfcf8facf9c7ee7. 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/USBNL0502004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce02d967172d1d44d71f6c0b99a7a1cac20755558eb37dabcbb6b1d5a6d4598. 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/USBNL0502005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c90855a998e73de9a67ee7098abaf4813d4d5ac171f984ba88d54a155aedd35. 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/USBNL0502006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9169650ff57279303b8c1926e20338ad85f0dbb8c1cf881b7fcc8297ebf059ee. 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/USBNL0502007.
I'll Be Gone Before You Even Know I Left
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcdc60327c0b91f03d806cb06f9c81163753cb532e3601663c6b79f57022378. 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/USBNL0502008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447caaa4040391de160e42559fed65794c9dbcd73810dde54e5a51c444e28a2d. 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/USBNL0502009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76da565b8e1dd1667f27613a5922699a9f11da235aaebc415b2d5ac3e103c9b6. 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/USBNL0502010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64849c5319146d548c536e7c4d5294f2983a5473e8dea8511ddfd6466f250f73. 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/USBNL0502011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33f47894b53c3aaaec1762e23bf5c69b9c710db693c842877f6b6bfc9058c07. 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/USBNL0502012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67ee2960af1e2efef14f44753e9da93cca67c75fa1f7b555d6ad9dfab8d093f. 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/USBNL0502014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25acef15d3a968384e3083fe6bef85281b1f3ab47e97287070cab2aad5ddfe14. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/USDEI8203081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa749fd70ac20b06cbadf2967938e5fb3c87c3a3e98ac08404ff791e27aeb41. 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/USDEI8203086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7db38d2e55ba3cdf48b79b04a2f7f3d7c4881155c9873beef2bdc29f894a7a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USDEI8202217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4077487c5c7aed41514109ecd3b6addbe32c19cbce5be4fcf9cd727a0243596. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USASN1900237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec1542ca4f5d0f49c49f6a442ea5e08ee3b2773173aa7e01fcbca6a4d0cb0a6. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/QZYJQ2000942.
Softly And Tenderly (Calling For You And For Me) - Re-Recording
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73ff3d091051ea4cbac6e2d00790d636ace6afe904800f233a2a97d46d7a6e8. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USDEI8202223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771d1f2a9c79acb21f2324d811e190535a1c464965847daae8aef90c691081e5. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USBNL0504011.
Red Necks, White Socks, And Blue Ribbon Beer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec32af70fb621cfef1d9633f9ae46f9e86b9bddea3721d30e34d9e838cf51437. 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/QMBZ91332750.
She Burnt the Little Roadside Tavern Down
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b98ad29e920956eca429de9702bebca31c1e9278683ca0cd46b103ad7484ba. 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/QMBZ91332758.
Rednecks, White Socks and Blue Ribbon Beer - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a24b6eb70b6d22c229f6f1cc6a032e6ad8d36512b7c99d71402f29352288d3. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZYJQ2001070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25acef15d3a968384e3083fe6bef85281b1f3ab47e97287070cab2aad5ddfe14. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USDEI8203081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1173f3a64cd972a781089e5ff06bf8e65510cddb3b59c272e0ae6305b5a8cf5. 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/USDEI8202221.
Rednecks, White Socks And Blue Ribbon Beer (Rerecorded)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b47bfca52567f116efc35c8d17b44690c5bc069c6bb191dc91262e6a2879b51. 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/USDEI8203082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960530e7d6b882e95397ab23a73ff53208c970a336244092695ecfa0a3479f72. 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/USBNL0501009.