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 0xe249213b8a5df9ba7f4540905c69845c6aef49ad6a69823b387757c8af9363e3. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84ab9f75-5cae-4bff-86aa-35de8fea9bab.json and https://artists.proofprofile.net/proofs/artist/84ab9f75-5cae-4bff-86aa-35de8fea9bab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Adeste fidelis (O Come All Ye Faithful) (arr. D. Willcocks)
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 0x7305a9f11a726f803ecb1f9cade4b466d69aa1cd7d934c0e191738eec96928c6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBAKR0813301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e9e3bc8b5e71a7ffb76c6702a5730550715ff0ffc15034fc34229e20caf9d0. 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/GBAKR8150301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8a49c42a3c0133b69470ccb17a233220b94cf12743ac72af1faf0cc06249be. 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/GBAKR0813302.
I Wonder as I Wander (arr. J. Rutter): I wonder as I wander
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b633aff79a1fd0fd50dff37fee97529675b19f128d1a6ce2e76234df1181a3f. 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/GBAKR8150302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51376fcd42430cba5f109b1d8a90b0e9a165c4bc754ef9e75f378a00b91385f. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBAKR0813303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa237a4a105b3a29fe91ad43980fee6fc1048f7aa2b9e06adb43a17336f350c30. 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/GBAKR0813304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5013bb9dee9bf31a0e57c7d0974efb8b83fa32d068e725b1b8b6d8cb8d575ee. 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/GBAKR8150304.
Lo how a rose e'er blooming (Es ist ein Ros' entsprungen): Lo, how a Rose e'er blooming
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafc61d411467cbf060b37112279c285d3a132e5ccb92b252f232a6895e3e29a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBAKR8150305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2584d00adec0dfbc7cf51a8ea44f861f82fca00db3687ca727445a1d71182f33. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBAKR0813306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d01e240b6576a7db87d129eccf5315f731d7368a84494bf856a4cfb1737a51. 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/GBAKR0813307.
We Three Kings of Orient Are (arr. J. Rutter): Three kings of Orient
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97d63f7eba4a2412860a632a79b2b09574f2434f538e89126f39119d72801b7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBAKR8150307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b31dd712c1311514af03f2f53ee2ae3453e1ffb665ee0cc0233a51761fd6020. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBAKR8150308.
El Noi de la Mare (The Son of the Virgin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef061bf7afc177359a76efdc4f025b61e8fd8240da4c1bc01c0321eda48bd98. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/GBAKR0813309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11dc89f595e212a2fd07fa8009b18ede77e80c1d05d5f9ff579b2ab531e775e7. 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/GBAKR8150309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc3880817b23f87d5239fea9742483d50c534d73defc08ed45174a673a201b9. 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/GBAKR8150312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c47f40c0932691c8508d532f97329480745c017091c00826680314a868b1f16. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBAKR8150313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f944345310ea6fa541123b6063b0a35f89353c5486051e27e1970a6b987570f. 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/GBAKR8150314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9294c0ba71e234e174cf27c3e6a1c9a792f0fd605e4e2ca5da62351872f5813f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBAKR8150315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3881ecd82b5040d8476f6c0f8d5b3f1bf00ac1421c64e52f8b276173e2e5c02. 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/GBAKR8150317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8613fb80ffa47e18386ab048425ace027a1cfe3e35aed7f022853cc25e2f2b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBAKR0813318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e92002945e6d071b69542760ae90efb4688d19873522c7753040ce58884d953. 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/GBAKR8150318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42f796ab228f3dabfb28d9466942a18b09fde12ba759444839b947c917ae9e2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBAKR8150319.
O Come All Ye Faithful (Arr. D. Willcocks for Choir & Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7305a9f11a726f803ecb1f9cade4b466d69aa1cd7d934c0e191738eec96928c6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBAKR0813301.
Piae Cantiones: Gaudate (Arr. J. Rutter & M. Neaum for Choir & Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8a49c42a3c0133b69470ccb17a233220b94cf12743ac72af1faf0cc06249be. 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/GBAKR0813302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51376fcd42430cba5f109b1d8a90b0e9a165c4bc754ef9e75f378a00b91385f. 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/GBAKR0813303.
Nos Galan (Arr. J. Rutter for Choir & Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa237a4a105b3a29fe91ad43980fee6fc1048f7aa2b9e06adb43a17336f350c30. 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/GBAKR0813304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2584d00adec0dfbc7cf51a8ea44f861f82fca00db3687ca727445a1d71182f33. 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/GBAKR0813306.
Tomorrow Shall Be My Dancing Day (Arr. J. Rutter for Choir & Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d01e240b6576a7db87d129eccf5315f731d7368a84494bf856a4cfb1737a51. 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/GBAKR0813307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8613fb80ffa47e18386ab048425ace027a1cfe3e35aed7f022853cc25e2f2b. 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/GBAKR0813318.
Rutter: Mass of the Children / Shadows / Wedding Canticle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7d01d8c96c1d184131a1f15b9b34bd7b1bfad5c6c8a3ca5fdea771d64cf91e. 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/HKI190604101.
Mass of the Children: Sanctus and Benedictus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a44fb243ea0474e4e2f2154e39ac93baf9f8c06fbd732c1317b9c19f2a6857. 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/HKI190604103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1287b58fee6fe08165f2abecde0057bab756b132a1a88f1f0e463bf77864a80. 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/HKI190604104.
Mass of the Children: Finale: Dona nobis pacem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865bad27d650fc2e69ecb2084e15b8bb87067f47ab3b1b70af50c4bc56216b25. 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/HKI190604105.