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 0x4d32d3375b2e655345dd46a1cd2e80314626550d8b84732d8f67017e84b7c546. 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/8e13e6dd-86de-4483-b655-8da6b08edd2f.json and https://artists.proofprofile.net/proofs/artist/8e13e6dd-86de-4483-b655-8da6b08edd2f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Spies Are Forever (Original Cast Recording)
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 0x28ef781c740e8d9332dd0948a328d4123fcc16e7e6348d55d490fd273a9bd3f1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCACO1626021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeacfe709355aa8ea2e21a43592588a222948cb2afe1037d810578244b011f46. 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/TCACO1626023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197b62c97c512154987fe3fcdbc8cff3c8897b2b58db90e542613f0df50e7e84. 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/TCACO1626025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b8530aeb36550ba97e9132ad688894fada11e4e13d1f21ac6a4871838aaa18. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCACO1626028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a1312b2f390e3c90fe890fbd9be091219c9af85cf76855eb34b730f617987f. 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/TCACO1626029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c748cd1e91721cd0f9439f63038aa990aa1b453a183c3862348a290cfd64c6. 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/TCACO1626049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0741b60797d65ebd7c618343b01be940fba54dbd299a8342c79bb9af478379. 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/TCACO1626054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10127e2da938b90fba585a90a606fc2d6eea5fa552b6987d580f5267795f55a. 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/TCACO1626065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5236c83595a2b4b8c0d832f946bbe14f903a541540d725689cfd4099e583d1. 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/TCACO1626068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d75e0d69cd64f651974eea0c81ff7cbab5098183e4781f1b33525a4a8c95d9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCACO1626069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc41e448b118a863592e4034789d4a84deba36e56bc7b0ea8d14d7e971232700. 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/TCACO1626071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a92af503c497f3c8b25587924caf92e2dccbf07dad5145d8d0dd1bcc219f57. 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/TCACO1626072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f687c38deeb66fdccac58a1a9c50bf5a4b412981c0f05692b84b35ddc47740b. 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/TCACO1626073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b9f9fbe14bf1a2cccd07c6d16fa83c49ae0ab18b39d3d3c704ca25722d9c50. 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/TCACO1626076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd856d86f9e96d91aeffd1bf1d22042001f98e844e68a7cf1ccafa2ed0c184006. 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/TCACO1626077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9358dfff9ab8601b6f3e0d8f56f2f44feaf4f9e62439750056f24e42621b2edd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCACO1626078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e2b3083a82de299c4430ff6983498c7fb75a4a310542fc7362461002b67ca5. 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/TCACO1626079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb654125f732d367a72de8a3e4a574af18d5314776d2d813ac46d41e700ac3ae. 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/TCACO1626081.