Martin J. Platz was a Canadian professional football player who played for the Winnipeg Blue Bombers. He won the Grey Cup with them in 1939. He was the son of Leo Platz, had brothers Waldemar and Pau
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 0x2dada532ebba053ea2b98b33d462e66e1346493787f13979529f9cf2850db6bd. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aced262b-34f3-4e5c-bb8e-4f033ac10481.json and https://artists.proofprofile.net/proofs/artist/aced262b-34f3-4e5c-bb8e-4f033ac10481.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Missa solemnis in D Major, Op. 123: I. Kyrie: Kyrie eleison. Assai sostenuto
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 0x29044a21d9e362f2f3895f0f75d0ae965f605e066d6e401e39db63a166224220. 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/CH4212300043.
Missa solemnis in D Major, Op. 123: I. Kyrie: Christe eleison. Andante assai ben marcato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bef16bb12c3ec9e343e90604cdb26a2f3d83d3c6762cdb4418b002627df4095. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/CH4212300044.
Missa solemnis in D Major, Op. 123: I. Kyrie: Kyrie eleison. Tempo primo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23915c61ec35e914070d55fb1d84385b0f9b6973f9c2345cada3d817be299b5. 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/CH4212300045.
Missa solemnis in D major, Op. 123: II. Gloria: in excelsis Deo. Allegro vivace Gloria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5867b16c88066830d1de8170d60c0fe85ba2588c6909287f51c54f52807d54. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/CH4212300046.
Missa solemnis in D major, Op. 123: II. Gloria: Gratias agimus tibi. Meno allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0508a825155e24db2b94b960134f8798a42d189a6dd2788eafd02b9a96a75c. 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/CH4212300047.
Missa solemnis in D major, Op. 123: II. Gloria: Qui tollis peccata mundi. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f49b99add59736a9b789fbe5ce6bf6fde81a26aa23315000aa8ad471c70551. 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/CH4212300048.
Missa solemnis in D major, Op. 123: II. Gloria: Quoniam tu solus sanctus. Allegro maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff789ff425d797d44f75298e0ac4387dab572fc0b6e1cbbe803032c4aedc90d0. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/CH4212300049.
Missa solemnis in D major, Op. 123: II. Gloria:In gloria Dei patris. Allegro, ma non troppo e ben marcato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad033ffdcfca6ca387e1349e712ddeb052d7373388175430c0af863b578e9636. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/CH4212300050.
Missa solemnis in D major, Op. 123: II. Gloria: Amen. Poco più allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f57e3db37dcb27068760d1104469af1bd3c37eb7f620f686bb2f75817c69644. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/CH4212300051.
Missa solemnis in D major, Op. 123: II. Gloria: Gloria in excelsis Deo. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5c53af34c51b9f06f253999c72bc9383a5fbc4b7b334776beaf72fe4a86b18. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/CH4212300052.
Missa solemnis in D major, Op. 123: III. Credo: Credo in unum Deum. Allegro ma non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d21bb1179a3e9a0e96e806d3fe6668a9091642d120c86aebb696aeab3379b6. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/CH4212300053.
Missa solemnis in D major, Op. 123: III. Credo: Et incarnatus est. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b745320c83cb926e8ef7c3107444eb68bfd2ad2f9c80ec33cf0ca6f939886c. 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/CH4212300054.
Missa solemnis in D major, Op. 123: III. Credo: Crucifixus etiam pro nobis. Adagio espressivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadbcaf8e6cd3ca17214f6f368dce59fa23d00a98498e6a878d3c7bb583c23c6. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/CH4212300055.
Missa solemnis in D major, Op. 123: III. Credo: Et resurrexit. Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7be8da53a4580b9cc41b6cd0bfed6592735db58b1f358700041892525616a96. 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/CH4212300056.
Missa solemnis in D major, Op. 123: III. Credo: Credo in spiritum sanctum. Allegro ma non troppo un poco maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f0f018b445ad8c679fd72415bf32947ebf632223c0f5cbd636970807ba4c92. 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/CH4212300057.
Missa solemnis in D major, Op. 123: III. Credo: Et vitam venturi seculi. Allegretto ma non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3ca1c2cfdada5487e39cca69b61aba01a181a08a052eb2f8ea77fae8c14fc5. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/CH4212300058.
Missa solemnis in D major, Op. 123: III. Credo: Amen. Grave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde54e24aab449e31b05d71417ed4a75445211de7ac9c12bd43b41985e03511ab. 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/CH4212300059.
Missa solemnis in D major, Op. 123: IV. Sanctus: Sanctus. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf569100a73f0b0f0eb6205316c02f71adbc884940d9cf0b2a39efe5ea93cc74. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/CH4212300060.
Missa solemnis in D major, Op. 123: IV. Sanctus: Pleni sunt coeli. Allegro pesante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e2ac85320b3b008e6ee359863e0238b732b86f6f3acddf6afc1723dcd9cc63. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/CH4212300061.