Temple of the Dog was an American rock supergroup that formed in Seattle, Washington, in 1990. It was conceived by vocalist Chris Cornell of Soundgarden as a tribute to his friend, the late Andrew Woo
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 0xcf49e320ce2413214b9ebd7903a3ed022ff2ecef5b54723cc93b8570932aa978. 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/82fcef8e-4fbd-40b2-9f30-de3440cb06a0.json and https://artists.proofprofile.net/proofs/artist/82fcef8e-4fbd-40b2-9f30-de3440cb06a0.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 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 0x8be02a46f7ea4b8d3f8bf55821e2d07f09d15ab6a5dbd7f2b1addcaa73568801. 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/USAM10000348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccd710f34c991e92479af0136a744d3322903000d398eb9da2bc00140e434b5. 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/USAM10000344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7925985accce02c18e55636d82ea45a51fe1f166f80656467792e41eca32a5b. 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/USAM10000351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8f3ac4e12f7dc2c104a19e8423fd83bef8ab403fa30d77c768e281f40360ee. 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/USAM10000345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07299398a6d8ac7097299b756890f5929370ae638bc01306b1dfa11f86fe0d21. 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/USAM10000343.
Say Hello 2 Heaven - 25th Anniversary Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d28ffc8a2bcb4fc4d3e81f203717156220bd3cf2627653b06e5276b92c18581. 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/USUM71607184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81db1c08332be097aba6cec027ecc5cc498548cdb7bb2819cb6f7bb353492f00. 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/USUM71607186.
Sonic Evolution / January 30, 2015 / Benaroya Hall (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad058ee00ed303e3c1c005ab5736c8c2aad66bf5e9b5dbc73eddd244020c2186. 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/QMS3G1500309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ab0770b0f43e5768cdcf4a6c637381be0b63dc7db6978d34d67f475cf5f282. 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/QMS3G1500310.