Rob Wasserman (April 1, 1952 – June 29, 2016) was an American composer and bass player. A Grammy Award and NEA grant winner, he played and recorded with a wide variety of musicians including Bob Weir
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 0x4dec8b332811bb8b073cf006a98774d66bcb3168893d2202940aa0c83d69b9e1. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6d3c3e1d-0362-442b-9a9c-c2a2ff8232ee.json and https://artists.proofprofile.net/proofs/artist/6d3c3e1d-0362-442b-9a9c-c2a2ff8232ee.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 0xe7c3f2d47340483cde21c383c4a55ac5ef5683d9d598b0c9e202f8d1161764f1. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/USGR10301396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6b6cdfc56d7eaf5a2b135fa2dfd38105e8b2db906a69aaf8d9c69d416c47e7. 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/USGR10300972.
Put Your Big Toe In The Milk Of Human Kindness
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcff3eb64f82375fa9421865fd8068d8e969db8654f0841de737ae30292a5242. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USGR10300973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d9b7b932c094b37639bac93e731950b54c0272bd7f8653f862bc6d5c22c3a2. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/USGR10300974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135105fc2195b13c77201c0b865a2249313854c6f9550b2da3d2e3d7eef1d1db. 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/USGR10300975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577563858ee78e3938e2f88e35f9998fe94b37044566e5215fb2910df0aa919f. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/USGR10300976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a5ef003b2c30886bc702469084805fabe379eeb5a9c3d4d5b6fbbcb26b7c6e. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USGR19049614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7535709fb16ed95314d97bfc506c96be8ebcd2120b1015fd17985f649d943831. 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/USGR10300977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c40798609f60e98b38c3c036db230cdfbc0bfc48aedeff6a9de49c23d295eab. 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/USGR10300978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f33f406137befa97fb32a764ac3a5866c9f7134f34926635ba23fa01ba7f80f. 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/USGR10300979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5831f4a883a84acff5defbf9deb2012bf2c2a59c770a6851377438d0d3ddc92a. 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/USGR10300980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96161df96f6f9201f86850f47a6838a3c77148e7ccc34704fed0779df2ef05f6. 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/USGR10300982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ffed5ae95a04d4cf86d4bbcadae1db49b95f87dadb5a8c321b680d5684f11f. 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/USGR10300983.