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 0x2a612b058845d9b40168b96adc14a1aecf9fa90ee785cdef2c7b239b612606fb. 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/2ae46169-5d49-41b1-bb7b-f78ca21bf76c.json and https://artists.proofprofile.net/proofs/artist/2ae46169-5d49-41b1-bb7b-f78ca21bf76c.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 0xa07111992a35b22ed0d93ef65d87ba4de34a11d1243fde80ad7e6b9cd049964b. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/FR0U91400604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9dc34a1d8583155abf7851b914a3634e6ff3053fe6a7d84ca37ac518ef402a. 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/FR0Z50003861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84a25a7b2df232f3618b43d9a43768bd6d479b786b4576e3aa82f03cc9ad106. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/FR8P40800020.
Mass Appeal spécial Grödash (Mixed by DJ Myst AKA La légende)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8797020859d51f0b951a5c92686d7a45ba4848fb688351611248d0065c15a18. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:51:14Z), 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/FR8GV2006550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eec2ac53058f918ec4713c687e2d0ecb2610dd64844cbdea1886921acda165e. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/FR8GV2116100.
Mic Check #3 [Victory lap Freestyle] (2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd515f4fef10d7148fedc57c9b764c73b1911157a75c6a9d475e05ca93d03ed. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/FR8GV2221890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a88ec95f6244e71ce0e503da3d09528a28e1350bbe91c52bc8a9fb010e0159. 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/FR7KK2245060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b394594d076ef5f96780eb376c10fb3a8f55e19f67add9be6fd0b2a930af3b. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:41:02Z), 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/FR8GV2234680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c8be09306527300a28d99cd4ef861b16bbd9c4dd428ae88bb906d40d7f337d. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/FR7KK2400270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c4fbe569fb6da78969c4e67615068cafab2fffd658d7a64866df820c2db817. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:22:48Z), 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/FR1MP2103550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b728a59466cc5ba6764a965749dd048809a877594d468fa97a4e3c1bca37728. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/FR1MP2103540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15c4b15280cca8b2689022d840b90b40236ada37e23088382a6e65f74cd29aa. 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/FR1MP2103590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0690266c621a6c9bee70bff26aa2e0f4b5df3a2d98be4179ee235badb2f93aa6. 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/FR1MP2103570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7bc29fdcddcd2532aa44ee778c5e3b1dee2c06a7c9e4f78490364786d4e0a6. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/FR1MP2103520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893627257604ec8ae56e206fed2dac5c21c460e79a40600b4bbe27652a415bf9. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/FR1MP2103560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d986127fae47a99398d4321b047a4e1feb07c3ede1422f51a7eef155b97c599. Chain 2 (Bitcoin): anchored in block 958635 (2026-07-19T00:58:42Z), 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/FR1MP2103530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57919270454defbc1a7546de54f5f4de6b32e2ef9567891d1bfa500c1ced5d0b. 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/FR0U90900147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1802bb0d14cc1042a1649a17b720d328bfef70bfecf4c50fb95696ab70a825. 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/BRAP61200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8e35c1a0b22d7faaf9ae21730c3a794fd6364ffef7bc92ae52a008e4966eea. 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/BRAP60500015.