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 0xadaff4cbd66c50f476de0e8e7e6fa87a50970bcd22a1ffa43dcb111745121932. 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/0cc61467-84db-4b02-bad4-363c2c1c4da6.json and https://artists.proofprofile.net/proofs/artist/0cc61467-84db-4b02-bad4-363c2c1c4da6.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 0xead97e524f9dc1689e0330baf6edce8db61c5ffbebae3228bcc3b09075159418. 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/FRX202455103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd2bb5b58d65543f7f2d8a35cb9a8baf16fcee8f70ace337de56a6fc149c3c7. 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/FRX202455104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13011aa70918f99e4928c0bd5863baea03e715c5f09b3408e1dc7503a54cf646. 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/FRX202455105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854cb53f683118c039dad53149501d99576f185f6ab6ffb3cca7b1fe10faf61b. 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/FRX202455106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bf68ad20bb9a34f8c41bbcc9c268b21812105d0df4563bbc3916b034bc10f2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:48:48Z), 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/FRX202455107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ecc35f9d1bac50ac7b25552c6d97c60827f45582e31295094b7a9d3a178f2da. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:01:17Z), 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/FRX202455111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd758caab041bfcd8d51f8e0bbaf6b1322ddcfce32f949adef3cadecb39465272. 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/FRX202455114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb7740f164002f49dfe4d2a24f45cf953023d07067b7f4fccf5974a74c99d33. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/FRX202455108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ecc35f9d1bac50ac7b25552c6d97c60827f45582e31295094b7a9d3a178f2da. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRX202455111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedba0498f8b2ac772e0fe52d2a4ecc4315637916e3f5fb175393db673897165. 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/AUMEV2163240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2302e08be16f9decee02f40671932b74f0791ba73ea9b6be38ca86052599432d. 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/FR96X2132979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795379444a81cb401c1c01c4c70110f364f292b84251c460254340049182ed9c. 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/FR96X2132980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237ea74494ddc49437aac1a91535afc610fdcc00cd9b97100841898da2604bfc. 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/FR96X2132981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe128648ea3d3e89a8522d7e841c6ad9339bf54a87661af46afd12c4504afa0c. 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/FR96X2132982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17a99c44f09fe603390a7109fa3b5484abe6547b50cbfd8674bbebe78516cfb. 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/FR96X2132984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf266e4d2fecffd591a6c52bd900c61d63a3d935271ab50932ae610c3335579. 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/FR59R2184470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfdd02a1c11db6a2301df08e8926470145e3eef2d65484db9931be3f7e6bfe9. 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/FR59R2184471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ccffdb84f9256afc9210aa53573f4c3b6d556e8dc66d6c1356419a72ea6e55f. 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/FRX202027122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e7cb4165ad441e06e8f416c4c608eebc7d21d2d0e331dd89e00d5037f3f4f3. 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/FR59R2184472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a990d70af1f8d86f0693105e1bcf5bac777a6435654f1e768b8e8325bc72c4. 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/FRX202027121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ccffdb84f9256afc9210aa53573f4c3b6d556e8dc66d6c1356419a72ea6e55f. 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/FRX202027122.
No Excuses: A Live Tape in Honour of Nathan Ashworth