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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e41a50ffc1591be2559c24552ee10bf2488bac1c3fa06b02ab5f06dd74d83b6. 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/2c12bd2a-b074-4778-9b88-85991b753200.json and https://artists.proofprofile.net/proofs/artist/2c12bd2a-b074-4778-9b88-85991b753200.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Der Stoff, aus dem die Regenschirme sind
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed2cee83f6e46e25ca6d9f956f2774149011253650146f81abf027772d6648d. 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/DEQ120908083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59aa9c205b9b1728680b8b318f13bb90e2d7328da872ed3910c91f2c690d5544. 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/DEQ120908084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72d5d24052f3de696e68ad2f11c98bbdc41d2e5cb66f3edd6b4f3ff67cebab6. 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/DEQ120908085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5900501d58e7da32df2969484111a1c6fbeceba85926c1b35f5ea61bb4964a. 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/DEQ120908086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0be2ac95a78f24fea6e1dd4804c166ffcd1666b95b650d39dbaf5788305bd5e. 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/DEQ120908087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b177ae1337eb97d46ab95207af5e9a75ce0749f2f5ad7319ede637050b2a1e. 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/DEQ120908088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3128bdef765e299310c28cadd5d7ce4a53fb81cca02f148f665927453aa5e9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEQ120908089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e3cce61e543b7d247add1bb59bc14a1adcc23cac405a7db3e66303168a21b5. 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/DEQ120908090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71fd090e4ff962d3b688f94a803f06ce67a86f4f3bfea864b6663b7b43297ea. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEQ120908091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87310e76d60aa064b9c1cf01d20aa6bbb6af33c1cba203703d76d3f3149fada0. 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/DEQ120908092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d1826ca8fc59f31302ce655fa19e2315df4bfa5d01fdedfe6c659b53c86a23. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEQ120908093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193a19c502416c5fbdace1b8c679563a152c5ef7406ad6512c968de2a3b2b55f. 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/DEQ120908094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27104cea234ae2cd2f17f050985b5a88408d6c953d68302d535d4bb8e60ecf9. 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/DEQ120908095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e5682b16c99da6daa1bb45b7d0c63c9b5f60a2bba519a7631f0b0a07898b2b. 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/DEQ120908096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76a94d77e7c2d7d0db4d98dc1d8042040ebeaa1ff1c2cb47dd70650b7bbea77. 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/DEQ120908097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307431aac8ad2966146e98696e02836bfa0817595cc72dfd24961a2fefbedf36. 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/DEQ120908098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99c00629d6a362a58bf7715d0362aac09ad05488804539e360f05e60214a0ce. 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/DEQ120908099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c301ffb64e716ae7217655b3b407d3190dfebac55f0a966153e8a657a9e501c. 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/DEQ120908100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0859c251fe1bf406b653e772ade9275c5353a5e7c9d795d5bbbad0aeb654ab. 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/DEQ120908101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3d125e769fd14c08768a6cda8a4ae6dbc5c81dbb99ca5929181841235ebb35. 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/DEQ120908102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb27d4043338ca595dd64dba819ab90a4e66e674216fc1f9fa8ebc54591c5e1. 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/DEQ120908103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20ed34bbd6f5751cb8bcc34a6ad3190e37a591f92c577e8d72e91d109269150. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/DEZ650805716.