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 0xba016cc380b92cce9ad968c9c27b50fead426fb8e3105d2b987cc0f5e3bd0bd6. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/afff779e-03b5-4502-bbf9-e90739962b0c.json and https://artists.proofprofile.net/proofs/artist/afff779e-03b5-4502-bbf9-e90739962b0c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Interloper Volume 1 (Original Soundtrack)
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 0x3effce9aeff6cb129123d1f26c6d19942c0a352d7684ed6642ed109dd69e217c. 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/QZWFN2333393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803c0a54b35d4dcd194a74772c6a2ba4d12fb7510ef2dc6ec70705e6b57408f0. 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/QZWFN2333394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9296551ecd57d8561bd39943b0bdc47ba4304974880ab5b361618353c0d5442. 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/QZWFN2333397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765aae2367f5eaf4946bf153a6872ad3fb614245714698bcae3dcda77fcb33b9. 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/QZWFN2333398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27d00f6c9d2ecf517563e2244613c867e744d531e76e2dfe5dabd50963ed346. 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/QZWFN2333400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35315af9f665a6d00c17da4ef04d3927a10c4c38251cea4517d55b0e28d27b0a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:01:02Z), 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/QZWFN2333401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8866e3a1690a61fe95d171d414b277301e80d97963b7d482a480a91e4d2644ac. 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/QZWFN2333406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570b3401f450569f16856fb657066c0e540319b1549719c2b4ea05676719aabb. 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/QZWFN2333407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51eb07748434199bc3508b7b33bf6daa261378b95278f1697bea96b75e75b6d1. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZWFN2333410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1d50bfc5c67e49baa1ad9b539b1b0d55ef774297700722d3bc5c347487041f. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZWFN2333396.
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 0x742cce6baa698b40c9b7e4770926ac107b31cd04cdfc3caef88bedfe55547c77. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZWFN2333399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3c3ee347970e36de9b3fbcf49351a73ddd619b2b9f9af33f7eaff928c798ba. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZWFN2333402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65d1de7d161b6a793fe130ae24c382aadd6d7a55404a46199f9ce8db6f944b1. 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/QZWFN2333403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882ec55d3c0d1da516316a0fa4627a04a0ddef74e29a4b263ca927c740c54c44. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZWFN2333404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620553df0566a99c50be052374044e720e8a5aee32cc19adaa1ca4b6a80c26df. 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/QZWFN2333405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10950fb018d72148bc4b3ae39c97c48a5660ce8367c9103d5258c4acbeaf3abf. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZWFN2333408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28296fabd4e11c8df08bfaa5b36defc482093fce06e2de0337f074775fb90739. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZWFN2333409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90713fc256a364d37fdf68725d04718d6598c9a66af1c1b5b50d2ff691fa970b. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/QZWFN2333411.