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 0x8b55cd4c0b59d1539fd8ee98fa6fc1e55dd46db30a7b727f94dec89753d6a950. 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/2078ff7a-edbd-48b4-b291-ed80b9d800bf.json and https://artists.proofprofile.net/proofs/artist/2078ff7a-edbd-48b4-b291-ed80b9d800bf.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 0x9f7a8b37c40e31fe5bdf62f5392eb609bffb6fa4369ee33db40980b7134121bd. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BRRP20400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf222d7d1aa6b9864fe474573967fa53091f125b906758da446301256e47ae565. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/BRRP20600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae56b96d657b29871b4f6b08c465344ea912012b4a5f2abfafa9ba12b32a91c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:28:46Z), 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/BRRP20600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991ea2df05b48d34d02ed04b89d3ee70d48e4ab9f1b89e1d9056b7d55d03c2ab. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:56:48Z), 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/BRRPG0900195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc555b4f4dedeeacf64ce6963e87cb855fbd48035a315e62270f311aa6eb402de. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BRRPG0900199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda90150c4127353d6f0f840433bf1fa2e2e05e3618d10de3ba3a529689a15410. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BRRPG0900201.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c88449b469931a414e069ca7701d7e71b05d35d3343d19936a1c1d5f652583f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BRRPG0800103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad002be13ad519de84de3a5fb0f51d4c551b980e5b93a74e02c06fafb6e79e1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BRRPG1000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2803da73616a6c9dbcba86a367e835672b7d5c4cb4b55c3dab74f7a441ff9078. 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/BRRPG1000113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8727a3db7565274e5db748865507da3e882f6b7d662857622a634d8eda5e35. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/BRRPG1000114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0aed8679bc4cea20ad35f0d6810930037cab7bf4f95dde222ff51cf9cd7909. 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/BRRPG1000115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67259b9ea7fbd8ec30334fe0f21e9dfc0f819827290f1db064e2c28014c2755. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/BRRPG1000117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe287d788ea7bcfb4487f9c3c6b7fd144f186679ade699da095ff30bf860a044e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BRRPG1000134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cc4bce5626fa90f4dbc551083f58dc4ca3e88c3a814d7c2fc5bac54f962d81. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:21:43Z), 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/BRMKP1100725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327402efec74e977d235489981e2b6e0f69cb06b606b8081218145ab10a620e2. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T11:02:14Z), 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/BRMKP1100727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa101ee81b7f8701064f101544b0b87660e1887b6317d86202e428b8747bffaec. 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/BRMKP1100723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfa8f854ab5cbd140e6a0683fd08d39f60944a917b494668d7c96070e554d46. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/BRMKP1100726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890570850a913343011f610e139d0f3a48915710b7c06304ec0a9ee86c63f088. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BRRP21300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e2019838a02a411894f54637872f7f990d140e81cc3d9fd801cf3b5ab74293. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/BRRP21600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f14f73ea35c3bf3f4260aaa8d1ad3f627d4ff6428d189b152c1cf57988f338. 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/BRRP21900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47b9daa493769caea453a49356b55fa7d3fe36cdd841e1c15f189a3002953d8. 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/BRRP21900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270e08fd5268333b701959e97feaaad50a6cac8f9ecf7722f07dbcb596738a3f. 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/BRRP22100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b9c629d56b0a70a9943a1c46834695cc42b2c42c32de20ce39b39e1c2c2002. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/BRRP22100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27753a6426a7ebc31ef2d85fce176cf68fb798bc00838545c2018ef50b9ce993. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:27:45Z), 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/BRRP22300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79806f4de79d3548be8333b1b8cb21446af98d0ef4565a295f53f4d6f96c539. 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/BRMKP1400653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c942958c594b7b12060edba0dad4879e6523246f711ffc40c6505672287385. 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/BR9NO1300011.