Stephen Powell (born 7 September 1976) is a former Australian rules footballer in the Australian Football League (AFL). A journeyperson in the AFL, Powell made his debut with the Western Bulldogs as
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 0x0267874c13e33c0ba0c7ad74bb35b2fc487130c466d5c270971f6ee3cce6ba84. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/600760f5-3140-4f74-aefd-52cbcb44b018.json and https://artists.proofprofile.net/proofs/artist/600760f5-3140-4f74-aefd-52cbcb44b018.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
American Composers at Play: William Bolcom, Ricky Ian Gordon, Lori Laitman, John Musto
O du mein holder Abendstern (from Tannhäuser)
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 0x70e70b6bab5ee9f47c88e4579675eb6b478dab1bf0a9433fd68c5fbf2796efc5. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/AU3SE2200323.
There But For You Go I (From The Musical "Brigadoon") [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb3495a703a92c10d864a574b2b8f4f61b81ce0bcdd7b6af8fdeeb8387310f7. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/USLZJ2399137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1c5c0720c6336646e989d7a3bc57e6bd4cf4a87bf9b40caacc2447ae3efca5. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/GBRKQ2460076.