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 0x9436612eab6620c5e080ff42754480f35b22eb57cb8e3025b45e7170f47f78e8. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9a0f723-7e4a-4b7c-994c-8607d072be6f.json and https://artists.proofprofile.net/proofs/artist/d9a0f723-7e4a-4b7c-994c-8607d072be6f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Blaize & Felmax Presents: The Resurrection
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 0x44b499b48d7e31d40b805bfdeda44090d78a25681caca4c1b0f131d09e71d2ea. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZSYP2250338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18ca3ca5adf79919e0c9316fe10b8614f28c3edcbd0dc5f799f9bc52eb7b6ca. 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/QZSYP2277521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75efdd7f4be71ced8eac8ca222e4a43f56300cef94a7af3278758ffd0af11c8f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZSYP2211690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6072a7d00e5e3d7f8785b29a90e9167e231dcc68abe01c91f3d6434e5981f7. 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/QM42K2562366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494e2817e24b1d78dadd03c7c3917f5ab9c9b5e81b7d0dd0b7114b7d3ef2a2e3. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZDA52455455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3035b7a6d5be894924e7ae8cbe7197c6fc2d30ba8bfd44cedb73449af433e7. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QM42K2392582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec97c17fcaab58bdc0c96fb20137dcbaf795b4bc591cd085c3a147e3528d25c. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZKDK2357441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5ca50ed269b3dc34f48629b9bcc4e713256209472855c0b690c4c9c142fde0. 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/QZMHN2213010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035bae0821155e266fe93dfc91a0175f3c0ef88be69b0cb88f3e2dd9187309d6. 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/QZS652213992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3236b0894f7e15f36ba876f1111f1669a1894e1984fe2bc6af396a328de6150. 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/QZS642105041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3672c20cd29b79f52dc414afd214c86e845565f19e1a9dcdc5000e6ae6e1dd9d. 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/QZS672180662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a02d3f4035d24f85d61272bf0d246008e6a2aa14a5d0015a2c59c9a0b832a0. 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/QZS652138885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b4bc2361cc26ca5caeeaf19c2f90bf8895d53e1676972940e86cd6d741734d. 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/QZMHM2085690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc331eacb62a3ceedbabf5ec8c1163e4a43f964f9ba1a381f31b8703ecccdaa25. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QM42K2152820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838fb7c9af85ea50e5f97bc59ff232a6cddef344ed526c50ecd6bde6b88ae636. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/QM42K2025793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69df225a6acaef5a677ba0037e12142f2ef37bf18ce9efcd9df63f9bdeb9ef48. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QM42K2054524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4675ba627a7b8e1b47e5d9bb114030d30ce536e9cc3b801acc27af0a845d6558. 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/QZQAY2344809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf24dd8dbc7517bd87e009c3769a21bb64c479157b2c805e1678336cec710326. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/QZQAY2334355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf827aa0d1b76ce0e9671a8854a6fcd52add54dc8bc281e1675db92af81b2a8. 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/QZQAY2326511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e16efa56f259e69d449f8f47285c8d9b706334e0bf6b8af7a18e5061b9f301. 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/QZQAY2349313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4204c44d99b99603310d16f1269c3838121b22c3343574b508bea500be33b705. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZQAY2398842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a46c677d1aeb4e6029d1728b628676c3178efefcba754fc8bf6cbe3b7f40fc. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QZQAY2323652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ac097208a4eeaaa2172fe7ace88dbf02aa80c7d06986953452b691d07d52c4. 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/QZS652462854.