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 0x15b4af37e2d01c7c7aea770c7fd6e5d5c02f1ae76e6767329b66da0104f852e0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05fff63f-1129-4c31-b0c7-f7414156bea9.json and https://artists.proofprofile.net/proofs/artist/05fff63f-1129-4c31-b0c7-f7414156bea9.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 0x171a3d25a8e8af9c75a1028acbe8290bfa92952cc2c8762821bcfadce7da1f1d. 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/DEXQ81105829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34d185845facc4e30c9599057ebba80c306378be1d73eefbc7ed4280dfb7772. 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/DEXQ81105830.
Kapitel 3.3 & Kapitel 4.1 - Wenn das Licht gefriert
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83dd45b053ee72ee4f6916626f39cf7f5924949d1da7ae61b50c06bc6df3f38b. 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/DEXQ81105835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc834ae6fb6046cf6276fb3ba99443c78f3993739bfb2406775b832911f39e393. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:37:36Z), 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/DEXQ81105836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3f05c46ae7d47c00ded51cd78bee88e01359952484542dcbc63419fdd286bb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEXQ81105840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314f67131e58577bc76a3af8163a636285d0d8b3baba6d27d99e61a33462564c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEXQ81105841.
Kapitel 6.4 & Kapitel 7.1 - Wenn das Licht gefriert
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c919de732e18438da0c96329ba4edbee6e3b594285ff0947b96e1ca552ab581. 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/DEXQ81105842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491b7508e880f5e7ba616c6834ddeab35c39846e92bec8ad5a22ba8fa7d486f0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEXQ81105843.
Kapitel 7.6 & Kapitel 8.1 - Wenn das Licht gefriert
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf560edb05faa045e2a3f545e0ebe23a5bbb207f9690d882d84259b1743082997. 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/DEXQ81105847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc786f87c9b89d190b80cb8783b96549847915d44d6071306b9320b8103a0c71. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEXQ81105850.
Kapitel 8.6 & Kapitel 9.1 - Wenn das Licht gefriert
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966be6bf4d7fb6bfaeddd43eeb5fd75d9bcbee39f19f64e9596a7179af45e301. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEXQ81105852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9c4bed607b29c6b4d6f1fbd71c9dd0245ef3550f26dee5ee27be131f3ce3a5. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/DEXQ81105886.
Kapitel 21.2 & Kapitel 22.1 - Wenn das Licht gefriert
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b7e4fbaee03bd2de62a1ab0f4a5a7ef5e2b4874ba49d2ccadee0603b96d163. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEXQ81105888.
Kapitel 32.3 & Kapitel 33.1 - Wenn das Licht gefriert
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f6013ac6684f420dbd794886a393440bde0a53ed90ae22ee6ce0ce9d176a71. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/DEXQ81105914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e08af1289c1e31bb8123b905235442955acebf9e3b206b4d29cc254ef5aff0. 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/DEXQ81105981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03215121a9e5fa795f034fe564f4eb969b60e60c3742ec21214d057d23fdcc2f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEXQ81105995.