thumb|upright|Shirley Rumsey Shirley Rumsey is an English musician who recorded two solo CDs of Renaissance music for Naxos Records in the mid 1990s. She studied lute and voice at the Royal College of
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 0xcdda1a556eb3e661dd910fbb9fd263694b550413e0e571e6680dbf721043ad03. 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/51a5e37f-9be6-4229-91ac-616c68056a3b.json and https://artists.proofprofile.net/proofs/artist/51a5e37f-9be6-4229-91ac-616c68056a3b.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb50240989636f711bfc1212ee3741277f56d26815976672e0f8f595d57c9bd3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/HKI199358102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b9a3dfda353786d2fd30121a365a6a0646799fb8b3677ca3b9f73be4b1f116. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:55:26Z), 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/HKI199358106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51270c4be6d5addc37d0161f71ca61f48630c6eafcee62434c949048b3c48535. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:53:00Z), 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/HKI199358107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb041c440d9a1002679d6bbd04375562900ae92b060138a2f44728748d7c2d8d. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/HKI199358111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c29856e3414d929a99349448fd3f73466a24cf0ec977fe4b34b38bdaef785f1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HKI199358113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacf857478d19c67d7837ced8f2544a451d238beb632eb8c01ef6cd42b55072e. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:50:54Z), 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/HKI199358115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb512199b0766107dccc1eb91df867e3332b99b1128fc3b1c816a4ce94ef79c72. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:52:15Z), 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/HKI199358122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a04436f30d5761dc38377f82ee60327f1f66b560cdda8672615ddf470610f95. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/HKI199358123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40d5c328bfce29b6d1c261a9d525f807f01317befbe5d078e75507a1d2047d6. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/HKI199358124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb50240989636f711bfc1212ee3741277f56d26815976672e0f8f595d57c9bd3. 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/HKI199358102.
Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 1: Fantasia I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dca84acfdf1adeb59197c66c69fcac1ab22fb6eb888b004932a374eedbb3cd3. 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/HKI199358108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a74b3f0aed065b114c179410168826bdd5bacf0504cd909c43d3c67ab8d314. 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/HKI199358112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c29856e3414d929a99349448fd3f73466a24cf0ec977fe4b34b38bdaef785f1. 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/HKI199358113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33258a70740b69e3148e2d78d865a8769d42881c25d1556e8aacf9866b65422e. 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/HKI199358114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f701676fa36be8f3ca3a0b0ac7639b958f40a27e6f3ea970a244bc8e291c0e1. 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/HKI199358117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4934e1ebbc32202779514014d1f16f87e035d8ee2f786d84fb091f91799c7a97. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/HKI199490604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e027730cfc0f4a81ff1bd10f838eee3f3d2370328a5ea94310e5502b22409b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/HKI199490606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59ecba2470fc6544f43c334752f35a4fbcf6bca1da7628d7a06924978dd7512. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/HKI199490609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f32f36eb04ad2c0ef80249b53ec2659fe7d85680d1d34fdb4075e1b1d70afba. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:10:20Z), 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/HKI199490611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd566a8a0a0eb9daea7382aed7e8c6b4fc1f89a5fbdd7c2b3a29ed774999b457d. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/HKI199490612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf5b6b8b42985115f7e110e14d8eb1dace573f2d540dd01a2799dd1a5982c63. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/HKI199490616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf4a0f719a8f3d04dccab4c06384a8fcac0f915bcb0aa90ff435fa6b87c8baa. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:05:31Z), 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/HKI199490619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd835ab9d7c7998e97ade125aedd59c9c52d501785b22770c8b3ae2dcb2a841e. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/HKI199490621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd981b4591dd51221f3f73c19633f6ae025e859d5718672d56d97c59e9cf7fa5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HKI199490623.
Holborne / Robinson: Pavans and Galliards
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cd5ecbbd8abfbc61054b97044cd1ac9405ac2afe5dc825eab6d8fcbe00147c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKI199839105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e39bb60a1d160880e78a023ab7af2259547a5817e68143dd3cd2e7f41d0e19. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKI199839115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b24238b3dfb5f38e55b3853eeda4ed6e87b2426d3161af2fbad1e9fce3ee83. 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/HKI199839125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad67486e955012cc9f4bf5bcddabfd45b89518fd2e97c7fce907bea134c57f6. 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/HKI199718510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcacee5ebf9740c5509aaed01b5654e7953163f3322d948468b0daeb0df705e9d. 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/HKI199718512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdc567ce52f55b83d53c0de13e69c7ff7a42fc04666b7da5e7dbd4b3f7d78d3. 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/HKI199718519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40d5c328bfce29b6d1c261a9d525f807f01317befbe5d078e75507a1d2047d6. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/HKI199358124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d0f39aba8b1a79993064213e7135e4dedd602de68ec1e7ce2740e9a03f5961. 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/HKI199202005.