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 0xa26384b0a356d0557e1d4085ae196ad93d8a5756cba629e7d53768352f32b494. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/715c88c0-6f28-4e6e-ae83-472f33fee570.json and https://artists.proofprofile.net/proofs/artist/715c88c0-6f28-4e6e-ae83-472f33fee570.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Brigadoon (Original Broadway Cast Recording)
Brigadoon / Vendors' Calls / Down On MacConnachy Square (from "Brigadoon")
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 0x27a33255556760a11c6dfdda709d7a2d3d4719c27c5de6aed84b541161e578a1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLGL1101493.
Waitin' For My Dearie (from "Brigadoon")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53b35c0bff98ab16fb3a51932b7e4a580e17ad0d0844e8855fe972bd4a28420. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLGL1101494.
I'll Go Home With Bonnie Jean (from "Brigadoon")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd579e4d875f2eb22cf59cd0321fa9dbb4093a7c6eec0eb60dc56ebeaa1acac5b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBLGL1101495.
The Heather On The Hill (from "Brigadoon")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa1504c07a74d021f042114e7a2fb8a730739d23fbb00126c831e65ff35981e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLGL1101496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e482826405a00b719d84b97f9ba4bca59d2c9e77053dd5c7ed7e9f5929d0088. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLGL1101497.
Almost Like Being In Love (from "Brigadoon")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139d98ac9c5f8e78ec001b7b06f3b184dadaff10ec02da2a3abfdbce98d378a5. 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/GBLGL1101500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982084e6b923d2554b0d753c2d1fe352a11460fb7289015fc296c715edd31d27. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLGL1101501.
My Mother's Wedding Day (from "Brigadoon")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37823b5bcdaac8935cbc74c77e0be82cf00f14ea8fc2f1d4028711b15625cf36. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBLGL1101503.
Introduction And Prologue (from "Brigadoon")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ae16cba2b254014be6a382a910de0b76499eab50e576c751bf2143c0e8a551. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:33:40Z), 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/GBLGL1101492.
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 0xb63e7e565d17f3b5449f40f17145ef615db580eada875c4d73f2af3ada7d2602. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBLGL1101498.
Come To Me, Bend To Me (from "Brigadoon")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d5cd9efafdadc75abed293cb32b32a5f091cd22752735a756695838908c2af. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBLGL1101499.
There But For You Go I (from "Brigadoon")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dc0cc89bb781e4a0ceb1a3c868c1fee793578f6a19e1d6d33239bd0bdede27. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/GBLGL1101502.
From This Day On / Farewell Music (from "Brigadoon")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4132cdebc8a077f1a875b51211e763866eb7571fbf15a64f02b4b66e53658938. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/GBLGL1101504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262707c5afbf331780fbb7e3b221e831ba79f73d8a5e71607f04becb40e5a404. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/GBLGL1101505.