The TARDIS (; acronym for "Time And Relative Dimension(s) In Space") is a fictional hybrid of a time machine and spacecraft that has, since 1963, appeared in the British science fiction television ser
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 0x89c6fd8f459530712c7550ffeb704b45032aa1a40d1e1de4525e0551c37fc1e0. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2233449-433c-475a-be80-41974a80bbf9.json and https://artists.proofprofile.net/proofs/artist/f2233449-433c-475a-be80-41974a80bbf9.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 0x31b86857067bb79e20226fce8316956cfc50f8c3825c8dc25c0905381f6d1af1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZ9Y21784298.
For a While They Lived Together in a Treehouse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1ff8de1bcd7b0c53b534bdd4f28e793c17717b45c817c61eba7c38fef43a1e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZK6N2577992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b561c4b2bd3efd4dbfd9e9a09d3619e5f09743adbced0f9c627bf9835ea8326. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:42:39Z), 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/QZK6N2577993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe510d776c609f9bceee499d59b66c4dbe5dd6bbb4a4775685f288dbbd5417147. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:38:26Z), 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/QZK6N2577994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b6a1f9df023f781854b7e43237c2e774225bd1d96617132403f9873fd13dcf. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZK6N2577995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0563c1de2a806db3e04efed5fc76dd7b6ea6952897fa51274b65d4fbcb0ebbb1. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZK6N2577996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464b72f897d4bb23bdcf9c75e0fe39eab2073c199e14cbf443c7ce971659e3ed. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T17:45:02Z), 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/QZK6N2577997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b292ce2a6b4bea3b031f69a3a6678cf2de91ae6711784f1a72c4c07bc77965. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T17:08:47Z), 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/QZK6N2577998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04bbbc53c4dd3f61369f7c9ea038d94df598855e88746256a80629e4c7a2b9bd. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:31:54Z), 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/QZK6N2577999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5b8ee8e03147ae0a786a49959cfcd54a3ef1a94a0958d4e1f8359132b96847. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6N2578000.