Mary Testa is an American stage and film actress. She is a three-time Tony Award nominee, for performances in revivals of Leonard Bernstein's On the Town (1998), 42nd Street (2001) and Oklahoma (2019)
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 0x01c1635e922700bcc8ec2809b1639283f676751466b70f53ea8e5c4b41fbdf03. 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/4229c7ac-7bb8-4b0d-8b95-19ec3bf5d50a.json and https://artists.proofprofile.net/proofs/artist/4229c7ac-7bb8-4b0d-8b95-19ec3bf5d50a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Xanadu: Original Broadway Cast Recording
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 0x1bf1ace83a7ca6e2caab7c79266461a8d4fb59b5d0ccbc1fd445bd8ae3a7b020. 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/USB960885801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec44b30325b67e56c5c166086a7a55118dc387f5920f012bcd187c46c77c46c. 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/USB960885802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ca0fa7c284b6b7af39e285d5d52e45ffb773946c16528557f8c8588573250b. 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/USB960885803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1636d3c02801490d39d98d2420f4877ca340a45b4cb1ac93360ea8bd76737059. 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/USB960885807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec73ef05408c55a5674a1e37e3a58f8d6bf92f3c648d1030cfeff28b827ed40. 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/USB960885809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ed7122039b90458301c70d47550f6a02d22e403e54b480a6b1c6978d7a93ca. 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/USB960885810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a72bb63c20c0e9164f2dd472964e0b379c61d0beb1a769e773fcf85df396861. 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/USB960885811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8264ae8dc1ffe847717bb664a6b7b6cdac12ebc86edfd424327252f39bafe171. 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/USB960885813.
Quartet: You'll Go Away with Me - Reprise
See What I Wanna See (World Premiere Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0cbe902f80b213098331601563afadac10ea5fe4cca0fa1cdce1b61168c340. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/USSK30544813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ebb2dd8256b42571aad476a931ecef8d589297cbb3520ff6214943b4ec01ac. 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/USSK30544814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6e999321b8eaa600d13c9eef219a1b3ee35f41dd3ee7b6ea25108cdf934447. 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/USSK30544819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536b9c1c3b54d9370c76a8f1eea8ebabf0fa61be7d4d665dfeb04fe9f692cfd1. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USSK30544824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789620c05b1b9b1eab87d358e9bf9e72988ea035fad6af3c19fb3ef97cb5c65f. 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/USSK30544827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b97da8d3571dbebdcbe72ad04e559856821a619e9c5aa32015850ecc7a61b7f. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/USSK30544829.
Infinite Joy: The Songs of William Finn (Concert Cast Recording (2001))
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd06d61cb8be4934b10bc70d9b49a881799e68ba89287051706e1c3d759e046a. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USBC10100088.