Donnybrook! is a musical, with music and lyrics by Johnny Burke and book by Robert E. McEnroe. It is based on the 1952 film The Quiet Man. Production Donnybrook! opened on Broadway at the 46th Stre
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 0x93b1beb3d6b8304c8c0471441e6d2265797ec457d4611160018a548bec195615. 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/a36a4f8b-5c5b-4733-a00f-fcb9b337529d.json and https://artists.proofprofile.net/proofs/artist/a36a4f8b-5c5b-4733-a00f-fcb9b337529d.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 0x7c6472b416d190ea225c029e07ac1b1f37b6c2c8954c13f3d3d1a88134a35232. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/US4HY1000301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299c58a052b595cfdefdfad068979b7e6a1847037467f7252245fdbcb6cb6529. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US4HY1000302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9c5c4c81c9dcdc4f918e5d30f572864ecde0cc447a80aeeb51bae736cb8696. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/US4HY1000303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181d4106cea84afc9f694bd48f5f28ecbf2aec134c2a0f900d973468eeb76e95. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US4HY1000305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c0535349e99a9e260e95b85fa9c389ba333614e3429a1ba082bae842ac48d7. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCAEP1908808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc077d0db3facb7389202f44cbc07927db6a288322993e500c18d4308d72ec15a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAEP1908809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7166a8f8d8eb921f7102f8fc837f46e32a820e23678294f481de14805af58967. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCAEP1908810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fff5227123f610f8d037ac7c492a087a9e3c71c701e0d2d336186c9c74cf06. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAEP1908811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5822536fb6674c0e4f951b2af3552e43be8b1e966c70cb262fc0f42d58440442. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/TCAEP1908817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c17c75fb6ce63ed3401aacea660700f56d52e49b3bf1413a713debb9a4e6bf. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/TCAEP1908831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dd11db38abd8a4f3f0fa7aafd2ef63fce8d4f19f17b8d6b65d05aa6c60d59b. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/TCAEP1908835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad2e028d78a7af6cd845b78987d5cbc7381f7608b41dd400fd0716a7924c285. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/TCAEP1908837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a150b090ecdda8cf4a5ef11af406da266886ea1bbff43d3fe1a369bcebff81. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAEP1909776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6c6261ff4ee1d2b666b5a1a25c53bd0c96d5101df31db2938999ad8803a19b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US92N1011703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1898f571c354c01e0d7f5dfe297b163b990c0192d02f4f49303fc023a33159. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/US92N1011709.