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 0x3f1e49f4679848dadf443a1f9762e3e7025ef03dbe8770816fc72677e6449d75. 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/ae8593c5-829e-4b6c-a096-4e96384a9efb.json and https://artists.proofprofile.net/proofs/artist/ae8593c5-829e-4b6c-a096-4e96384a9efb.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 0x8d1bd1b719eda9dd278c8b948f5928685ff68564cf5eb93e7b0455dcdbe6c574. 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/HKI199314602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5d7585c1b16f9072c79b0111c838a1496597e73c420ffa2e44e281b2528eae. 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/HKI199314603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a9a31ce8ab14e97979797a4ec45453e10b9ad8a65176241d0683ce2feee309. 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/HKI199314604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1f8f96a7eef92705489a3277bb10e50125ac925539d484eb485ae0a45333c6. 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/HKI199314605.
En vintersaga, Op. 18: Epilog aus "Ein Wintermärchen"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd861ddd6cc4bd61826e725fce5e41a6003cdd7d09a6df26b6ee59a334d3dd810. 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/HKI199314606.
Frösöblomster, Book 3: Intåg i Sommarhagen (Arr. for Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92aa6f23049370170eaa96d2569dde4d115d908946795e6adde0f9cd0af9121. 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/HKI199314607.
Frösöblomster, Book 1, Op. 16: Sommarsång (Arr. for Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7171540df687da3ad0d68b38e0c047cabaceea4fc0976ff90423cb1dbdaf6bd. 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/HKI199314608.
Frösöblomster, Book 1, Op. 16: Gratulation (Arr. for Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a35a7b3d33b90f02c102c20b6c85799d49a5092760bcbdc4b43d28b48aa7de1. 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/HKI199314609.
Frösöblomster, Book 1, Op. 16: Vid Frösö kyrka (Arr. for Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679803bef95623c45672891ad42fa46552d6d830a7b8b519d03694aabc06572f. 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/HKI199314610.
Den förlorade sonen Suite: Polka from "Roslagen"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb059e46a4ea7ec43fdcc772b0edee921c97e35dfff0a3b9d158e9b7a7d08cef5. 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/HKI199314611.
Serenade for String Orchestra, Op. 11: Marcia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2393a8b03d525a7d42b3242e7d9bc00b5ccc1201dc644ba9974e4087029e154c. 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/HKI199314612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728d137c67593e870763ca5ecf141040d357019c3a4b4a25f2c0f033033e49bf. 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/HKI199314613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe687007271a32adb790753e528a4f4b0a4c9f4cb8c2680558cfd35c5c24316ba. 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/HKI199314614.
The Drottningholm Music: I. Allegro assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266eefa3b5a25dc1a19d478ae5b15e7824b48908311358cdc56fbe8908d0f99b. 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/SEAEQ1002010.
En vintersaga, Op. 18: En vintersaga (The Winter's Tale), Op. 18: IV. Epilogue
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd861ddd6cc4bd61826e725fce5e41a6003cdd7d09a6df26b6ee59a334d3dd810. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI199314606.
Gustav Adolf II, Op. 49: Gustav II Adolf, Op. 49: VII. Elegy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728d137c67593e870763ca5ecf141040d357019c3a4b4a25f2c0f033033e49bf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI199314613.
Sången, Op. 44: Sangen, Op. 44: Interlude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1bd1b719eda9dd278c8b948f5928685ff68564cf5eb93e7b0455dcdbe6c574. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI199314602.