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 0x439bcef4cda1dbeda3f1f52692a8d22e88d9e600ce8ba7933435c5e1fb43b2c7. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0810a93f-d459-41d5-ad7d-427a91eccc44.json and https://artists.proofprofile.net/proofs/artist/0810a93f-d459-41d5-ad7d-427a91eccc44.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fire House Dub, Volume 1, Sip a Cup Meets Negus Roots
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 0x2534d15fc8c96ab164bd344c0ea48bc7ed55ab15cb2c1d16b2f05cfb6cedb385. 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/GBNRN1201801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba1b7459cfb04d7a37a40443901aa3a3d4c998b7fd3e3cd8585d8c5d0140b93. 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/GBNRN1201802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8004805b099fafe7563998b7af8661ab17392aa23e091266bd23a9a4004dbc. 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/GBNRN1201803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae175baa5c9daa8fb4c3a2f90208a5b41328767884ded4a3f10e3f26b7a06431. 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/GBNRN1201804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5f16db97864da2086a893daf915d905fa61f99216d0ff881a8624e4ac71c55. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/GBNRN1201805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8659b17d701a88cca8c03cc401dfc6d26adceaaa60407f67512f82e822696b30. 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/GBNRN1201806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6764c2fae0d90bb93b5c338615d39c1617dbf3764070bb26d19e48f3b6fe0bd7. 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/GBNRN1201807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c3716646c317946231b4db32be4011f3092943ac6493ad71f90aef749e1f54. 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/GBNRN1201808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad1e1e80472fd9ae7d692243e2a7ae0a9211d4a2f2379bc05be2513ac42c771. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GBNRN1201809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e062870cfff655f1c1245397e04cf2142089d93f4a69ff5a5e6a3b314e4a53. 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/GBNRN1201810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89726a5d02a300c4a6fe04383297ef07207877791a83991f745d5d2fde12948e. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/GBNRN1201811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f385ebfb2e21a37f9e76e1cd5e0eb4c78afade364590abc179616869f6c2e67. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBNRN1201812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ea8b9858c510999ee7e8b8a1a1ccd3c33a7e1d570f3c9eb9a8945cf20a2f0c. 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/GBNRN1201813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe946ddc9df8fbad3c300847f8b8b0dac152b19a5fa8e6c3d9c4116854d18c4e6. 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/DEEF20800054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dc539b4d36cf2ccf54cbd1e3e81d25613f2f5acd34aedcfff5e1301f91aabe. 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/GBNRN1200301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30133fb5375f4f3ba4fc28c7e58ee7c403358f2aa309b944cd1813d30720da4b. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBNRN1200302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a4d6165d8f96310dc2b7ecaf3bc61db134ac12811ce28d019092b4ec828c59. 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/GBNRN1200303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe2b960fc0e75afe0858d0da390295dc071a42bd4f2e8fd8fbf1ddfcfacd947. 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/GBNRN1200304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a33ebe31d4e773ff164535935c8313745ca60d55bac4105fbedc04b3cb3ef73. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GBNRN1200305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b7144536206afc55a78b5ff5e812f8974580c0f1a340f85d640aa4a5846c00. 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/GBNRN1200307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcb64df715104e68ff19c924543117949c3f897d7b244355f70bcb049605d0f. 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/GBNRN1200309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f34afc7517d85a68fa2a1f9fac17bf1e7a7b920b950103a06f232fbe50249e0. 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/GBQRF1100738.