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 0xe3c4389c72dfe5917889291af0af21b6aa5a672fe2ae52ca1b755a06547accc3. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8a2c2d9-13a2-463b-a4b2-44df4119183c.json and https://artists.proofprofile.net/proofs/artist/e8a2c2d9-13a2-463b-a4b2-44df4119183c.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 0x1a7331f64f9dcf711585bead2871a403d907da5af3efc1e2cab1e23996048dc1. 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/BEB682400385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a4cd5c9eefff6dd13d4f04f0ee192e288bc8b42f0e5dabb46117f9c9d9c551. 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/BEB682400177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a6f879a724f2aa2f51255c99be44a97e4b6868de309accf708da4d4b1cce90. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTAT2109943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8967060aace1e5ca2b7de5ec7858c953e9ff0b4af6f2e169bed4f3a814ac3a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BEB682000551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da55fe1ba291a75fbdcbdc807c7fba456b42d3ace1910a711d7e714843ec738. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/BEB682000490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88fce481dcc3b6f76a6d8b17547d303b7d5c4f88314d0df7bda19c2fde6c498. 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/BEB682000259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9558ab268c1f674dba8d21ebb482d39d598d427dc5ba569238a60d760d1e873. 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/DEAR42085978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1723df12169c3f5f28f6db6fe7d12a9adf2ff5e6edee92645856aec4076a849. 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/BEB682000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906b72d61226d6ee2c69357a9581bda0fba62c8c599b89a2f7e6362a31979258. 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/BEB681900456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94027785fb95da108811ce4e7ee0c37d8882c1441890fbd35a66c92beefed3d0. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T18:06:28Z), 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/DEAR41946525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7f43a5128c5f02e9f9564bb59d1c929dcfe324b8a90ace0a3be7d23975f49e. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DEAR41979082.
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
Mandala (Hardpulz Techno Parade 2018 Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6890170b8ab7b8107d66feccc303e7e115c929d8ce640b650273b74e24ae2858. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEAR41848871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c85f194eb47d16967d6b127389aa9d8c875df2ef54bfb2a2358dade0508079. 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/DEAR41711477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe654c17f72012f97ad028b5dc425ceac2d3f43b4e4dcb962befd470091ec89af. 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/NLE801700083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360b63d280fed8ef2f766e76c81254d9da5e3f8b593011efc3a92a36ad6cec1f. 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/DEAR41631106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d5ec9cf89acfaba0298affba34f93d4bd0707af1d684e23451c74f4cd88bfe. 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/NLH2L1500198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa101e013d8fb231a17480d23e4feba218f7de10b6d4c6ae8a8278dfc848f33a9. 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/NLE801600333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f9d08c9251713e3b5ab43c6acf440f57ada4a47322460774a5d0d58a3c6a07. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLE801700202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa101e013d8fb231a17480d23e4feba218f7de10b6d4c6ae8a8278dfc848f33a9. 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/NLE801600333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0c8ebe3c41df3eb717a40d0080b25e869baa6743cd0780d5e48a6f150da1ae. 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/NLE801600373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e05d364870579b010c8af8af3b7040678cb57e2f6c91233f836ea5b08bda986. 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/NLE801600541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c53f2559a44513556feaaec89f8714d4c1362ff9779f411a868d5f92dfff21. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLE801600153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8dc4eab5cb0577d6639cc875049cba7e2879e9dd1acfb2b9f2159cdad6ab83a. 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/NLE801600124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2f15bc0ab714e6cc88942764cc480ab7d689fe81982c03e41571d7334d7dbe. 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/NLE801500317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a052350b9b42758d47382b5e33435daf65867043733a4868b0870a0444bbd98. 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/NLE801600336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930d1f396c796f37f726f733cf22b7be76c8ac67cf5d914206eeafd4b65860e5. 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/BEB682500052.