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 0xc78c98a2bb41fbe13f9479f47b06240338dd57fca9a8a017834f44f56760b500. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/da95cddd-299b-419a-95e8-69a802e4f71f.json and https://artists.proofprofile.net/proofs/artist/da95cddd-299b-419a-95e8-69a802e4f71f.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 0xa7fe729ed80b2ef546d457ac43ebe0037a15ac6bf6397a986354662653110369. 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/USA2Z2401091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1a53b1e326f055472d5e622c74be65de224b81732febfcaf77b83f68107011. 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/USA2Z2401092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7e10e3706aee034a6fe4b1d2cfb1b4eeb9aa8e6b251be3932276ae3a6eecd0. 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/USA2Z2401093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560e2c6261128e97ef769fc5db99ba6bc7fecbcc9b66da878afc1e0228181646. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/USA2Z2401094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4979eb048d595fe4cf6eb109619193401cc25ba752149cc56265b22de398bac. 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/USA2Z2401097.
The Derivative Sounds of... Or... A Dog Always Returns to its Vomit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf747cfa14b1e58fc9dfaef94cfb9f1eea2ea38848feb641baf6b2aed790b8e5. 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/DGA072306642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83162c5a136d6c8fdb9afe79610e46de523645ca18f90df3e6d2f438aa5596b4. 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/DGA072306644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843ebbf1d4b3d071ecc7ea6743752ee7eda219bee4f44fe0f1a72becb1d0f648. 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/DGA072306645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5126ea4274c0d3a057248881e6d88a92e42caa21d0e1dcbc4e5bc2ca1c964d. 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/DGA072306646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee44a3596bea3df2d67f60803a6c01f9ce0339a8d2747844fab64db6e18e328. 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/FRX872204361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96003c45cd42f89797fa581754129f6ef8e8dafda412612029dd222dade06cd0. 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/FRX872204363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f04c0c06bfa77d2c63d1b1c548e8bfcda24cef45c2acc29b35031bb9995d449. 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/FRX872204365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f09a1718fd31fe364fe54c09860a537ac0ae3b47474285853d4b1d2207e145. 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/QZ2YP2015503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb854a4ee78b7654fb8b23f1fc1cd1fe2e001631c1d4e5fa28980f178a113cf19. 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/QZ2YP2015505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40deb9fbab1aa938450523f9a46aad99da279269cde225743a43447bb8851fd. 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/QZ2YP2015509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404d019fb561d27680be7cc0dd2fced818a6ca0e0f8fe898f174fa9497a97320. 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/FRX201980568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee13929514dd1303fe8224e872490214c01427306ec0e35eb1822c4aa1c5e7da. 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/FRX201992630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5812ae56c31b5fbadd9435f625f26b9beafc5aeb8d7871d859c9dda3f88b6c2f. 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/FRX201992631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c35e5ea94c25db7be05a31e1ffa9cf5f64951db31dcf8debba1eac2d7791f12. 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/FRX201992632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5151d9bca0c724ec19be5ad115359e2140342a35d4513c31cdcc0058e50f8996. 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/FRX201992633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f414a0ee01869631ecbc1b02098d2c06ae93c4a80ffc9861b43ffb38c6cf23. 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/FRX201992634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b2be6bece4990430c5d21a05fcc05c629d7a4ec74eb19756ef0dcdf6e8183d. 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/FRX201992635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffd9f1e5af0bebc38ed53c2dff2d1e7952c943c95432fb31797cd7bf8fa40e1. 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/FRX201992636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c939cbc7a5a0ac3cd407797b9db6b912aa57b607b62ce897009704da0c7be30. 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/FRX201992637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911542f40dbb092eecab3c69c4d4255faae56273567006e6413647415bc4fd75. 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/FRX201992638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfff9e492556fbe9eb512577724b909905d03137e2bc8b9d40e11f31ac53864. 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/FRX201992639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7553acdb7bb9bda5404fe32b734662ed2fdc5ca9278b685ee735664d70a8f071. 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/FRX201992640.
Various Fads & Technological Achievements
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ffc4088ed42c62f96b7315822473c442d5ad31ef30fd828ecd66b4c898dc3f. 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/FR59R1887316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81ede67954c99d65662d0604f2f86384e91b58d3f830e041aafd9efd78f2024. 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/FR59R1887320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1a53b1e326f055472d5e622c74be65de224b81732febfcaf77b83f68107011. 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/USA2Z2401092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fe729ed80b2ef546d457ac43ebe0037a15ac6bf6397a986354662653110369. 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/USA2Z2401091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10fd05655303f5eca4089ba9791aea1e48cf13048f0c1e86d613a7145248dd2. 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/FR2X42455189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee00017ec214073b813fbf2f671d113dc916ef87b53c42ed5b17a3f15c7fda1. 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/FR2X42455190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c481cd9df2c0e563a2797600d9af61f5c98235e4b30b721e15137616cf1acce. 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/QZ2YP1915002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474773929bf7de101a51221468d6a08adf4d09245a268b92da40d2fc00e8da38. 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/QZ2YP1915004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8800a365994f5e1a06f41cde721b249f88f91902c4806a9453d1124c24be74ad. 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/QZ2YP1915005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b0b78992316fa8448a017b660cb348404310a2c0616036d6c391974c19e7df. 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/USHM92191416.