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 0x8d7d005f7f988e3eaf9bbec021aacbff78403f7a66f108ff29b0c61c19a1e12a. 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/7969088b-3b52-4719-b5a8-df4a5d48be49.json and https://artists.proofprofile.net/proofs/artist/7969088b-3b52-4719-b5a8-df4a5d48be49.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 0xc408448553c115a25ca9da91822d40ba5e288afe05b2458c613e344ce4f30cf9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USCG62000124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3aceec8c99bf5ea1f1b979eca17a5f42c7f6bcf73b1a2b525c609764814c62b. 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/USCG62000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a7e2f960186db209c758c1aef1607671c4c79df526a9a81141b36d930e0ffd. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USCG62000126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe657bf55fcd312dfac20e06cd4db3832a45577cfff6323006b2fb0b219e96fef. 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/USCG62000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e76d2f8369ef70a0c68ff64b5575dd1821db8414e3e3b15e95dcdb5f314ca8. 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/USCG62000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a05cc60dd0161e83bb1762ad432f58b9971f4fad374474f8772737d01779bb. 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/USCG62000130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630fb0faba9b15521a32a4dd7cc8a163bb1a0d3603689983a927a8049fd3c983. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USCG62000123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067270194814d6a2e59209b098bc4e9eaedf04dc707dddbb24899d9754c05c53. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/USCG62000127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb8b42121b97aecbb10f1841203e6e5ff78c213ea8e0a4440208c9030cf769b. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/USCG62000128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4894b8fc7a2d5701f06599a9ec9e8b6086cd0233dee5a8f6e9eae9ea294581c5. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/USCG62000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2eb572c414d548483a6953dc7a218eae6401ec2afc7bc613069a941523ba7c. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/USCG62000129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01605490303bebb5c87dad6980c6308b2b411de213a95212070cbfc537f8944a. 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/USCG61800109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed530a02fd62335f871a4190c4c9496ff18047772ec0829707aad88c454053d7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USCG61800110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331ccec25224fe805fa41ae1af0e4d5685777e7eb4ffe0fd4f2b2ff856aec3f6. 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/USCG61800111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d79430eca1b67a4638f96f349fee91326ec8aa3760bc8d8e2b2b82cd7f36d2. 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/USCG61800112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98682e6508700d1d4ac62019f1ff1d65dc023f4edf9cbd52f4ee06c91fd7f2a. 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/USCG61800113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a94429918bb60f3f34577c30ffd993ddbc4aae387c91d0018e5ddbf26a7c69. 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/USCG61800114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672c2cf2fa714a52c53512ffca49cb13665b468b22195178b6ad8c69ac3aa1e3. 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/TCADD1722777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ec655c1feb31a5d1d10752a4dc3cd79d563ad877ca2892216b9ae30a580dce. 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/TCACY1780044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe356d88562658d45078385279c796665e6aea1d37dbdf2fe03b82d9dff10fbee. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCACY1780050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3a9e9aec2227e0fd30b6558de4be2181923929e36483b2f3421fbf14709ec1. 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/TCACY1780059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff05bfe9fe1f833e9c7d7eed8250119203a13d19c6157ac8e116222d0e553eb. 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/TCACY1780076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e24b3790bc55f0da2225b71b0bf69129fbbfa06896a5ad007ae9a547b19b93b. 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/TCACY1780119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6a627370f9d1f901df635cdb6cf0cb73234de33cc41cdc44d68ecd4e924e1b. 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/TCACY1780121.