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 0xdbf03e5c99ffce643a814a09f0d62d451319795f8c0e38e818e7c0540db297a3. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28c22174-8d4a-4ccf-829d-c8dc54d0053b.json and https://artists.proofprofile.net/proofs/artist/28c22174-8d4a-4ccf-829d-c8dc54d0053b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Teddys Märchenstunde (Ein Hörbuch für unterwegs von unterwegs)
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 0x681e921346a80b576eb5fb9024d6a29e0db4990884d19caf546be68f4017f0a8. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:34:04Z), 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/DEXQ71122411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddb51dee9bda37cd5ceb18a6be902135a7f453e74185cac328411d71e65c0d9. 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/DEXQ71122412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3bab8d494f73a72c9051d34cacb592d74135dd72882a9b51625d074d231a11. 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/DEXQ71122413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168669ab8adac3bd9212c83c66737622e06f3f0965d469628e63ca9a79ba01a8. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DEXQ71122414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8d57704d81ab014fad13d6ea7573bee93f2c31ba97bd93fb7bd05d18757409. 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/DEXQ71122415.
Kapitel 1.6 & Kapitel 2.1 - Teddys Märchenstunde
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5522f663afd6f59dd616998fb5272333bae2f6e331258c7b3ab8962266ca1bf9. 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/DEXQ71122416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e7acf65a15d740b82bab2d24195576d0637b4b45b9fca1dccc10c9e3b563c3. 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/DEXQ71122417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4d8d31ef72f18b005694eb0cb3ddb6847df5c15dded976d38af8211cc4e328. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:23:30Z), 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/DEXQ71122418.
Kapitel 2.4 & Kapitel 3.1 - Teddys Märchenstunde
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a96fc391e1c63e6f0728d6f871602167fdf9f38a398afc690fee5bd20a842c8. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:33:49Z), 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/DEXQ71122419.
Kapitel 3.2 & Kapitel 4.1 - Teddys Märchenstunde
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5461d6ab7ea3b277ab530b531eb731f9630b64631b339164c4ea6784e4c686. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEXQ71122420.
Kapitel 4.2 & Kapitel 5.1 - Teddys Märchenstunde
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c78d1079c8dc4bd0bd095d98845afa5a8e3d0c842d265d5aad15352a81e2bf1. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:50:10Z), 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/DEXQ71122421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e48af634bd2a7950b4ecd7e0f43d7a65e6352f24af40b0c7b366941dd584458. 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/DEXQ71122422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd6e3e810599f471427ad10c3dc07ccaf15f8075fe4ba608425ee13e33d3394. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEXQ71122425.
Kapitel 6.3 & Kapitel 7.1 - Teddys Märchenstunde
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c84eecbe94cdb70edb4786a901a326590b55866c8b3feff7e4ace29bf4d98c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEXQ71122426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9431b996d058348f37a4527ecf1268cc248e1a4437309b1b60aeabf49f3a36ff. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DEXQ71122427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f08011acbb2aa9c9d81681b9159473a743a3128f761094224c21cfe02b3aed. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEXQ71122429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20799e0dd6bb94c5dfcf9ac81dbeb68e1c0ef7c097dcd78048552069212ff08. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:08:18Z), 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/DEXQ71122430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a5ffc86d0f6c662a6cf5ae86cc2d1d1d456c10b7f90e4fab22cca64b3bc5c1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEXQ71122432.