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 0x0b38e24614637adb98504635e7a262ad4e1555dae8a7cd86b44a49408c1b148c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f7ec70b-ebf3-493a-9aca-a048536500e4.json and https://artists.proofprofile.net/proofs/artist/0f7ec70b-ebf3-493a-9aca-a048536500e4.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 0x555e07d133585f7f5f48c0ff538ebff44dc104f3c2ad27a7f8810ca812de2617. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:01:48Z), 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/KRD031700001.
Warming-up Ⅱ 3/4 (Piano Concerto no.1 op.23)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e2c40eacb086c524ed79db732136ad87d3291795d40e56a1f0abbbca4531db. 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/KRD031700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac8786c3d091326f967b6a9216beaa2e8a2ffcedb2b2fbc268f807458aa8099. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/KRD031700004.
Battements tendus Ⅱ 2/4 (The Sleeping Beauty)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1740ec8ef37cfadf7cc027bf18576959493d178ccce398dff4aa48237a2c1442. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/KRD031700005.
Battements tendus jetés Ⅰ 2/4 (The Sleeping Beauty)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3eae3c6c139d4572fb9e8b5713792fcfef32ec08951a6deba60c6292debf8d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/KRD031700006.
Battements tendus jetés Ⅱ 6/8 (The Sleeping Beauty)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017e5214d8a092b8bcb6f9735a5a9c090984f42a9d24d4cd318cb7f275c0de79. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/KRD031700007.
Ronds de jambe à térre-Port de bras 3/4 (Waltz Sentimental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a509a8a76f7800c98ba4d07f0b2fd787a1bd2d7c7a9d63096d1d5d1116da5e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:25:47Z), 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/KRD031700008.
Battements frappés 2/4 (The Sleeping Beauty)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f282fca428a0560042fb6813ddca5d6d0189feb92bdc637129367346a283ff. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/KRD031700010.
Grands battements(a) 3/4 (The Sleeping Beauty)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8a1add8f573ed983214de026e95c556f4d72ac4b21ac2bd40dade51ee7d37e. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/KRD031700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2142ed62d22032bf68b4a37c32af26b73829d5800c432ec70976faf1b44a58ac. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/KRD031700016.
Adagio Ⅱ 3/4 (Serenade for Strings op.48)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec3b2d5efba32f55f75f86bc23ef0cd5d3445de719b1d7628e855329eb6e77b. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/KRD031700017.
Battements tendus 3/4 (Variations on a Rococo Theme op.33)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef6648f8a248a4705d8121407903fccbbd18ffdaf07fb0fba6e42af1053361a. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/KRD031700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ee7fb721638ba34691934e35f8bf7e2b59e7f93d281f41373fefc33276f445. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/KRD031700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab742946df354d3042689a8258a1045c08fed134a9c9d916d0bac3933319eec. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/KRD031700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a87332b6d235c3a95ae8bc37566d3b6f50c77622e8a4d6bb4077d813884ceb7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/KRD031700023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555373bad5cea3dcafa6bb2ca1804f49371af55910279972910117f90a4d2286. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/KRD031700024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bd984f091a385ae329c2c47c12ef6636d0cb2c3a778e5844e244a0aa869c47. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/KRD031700029.