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 0x4c32c2852c55fbf8b9c8720e95da130db46964319af6d141e06b2d4cde141c1b. Chain 2 (Bitcoin): anchored in block 953638 (2026-06-14T13:10:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/380006ed-66e6-4fcb-bfd0-d8d9b9476880.json and https://artists.proofprofile.net/proofs/artist/380006ed-66e6-4fcb-bfd0-d8d9b9476880.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 0x9607f30212ba4590abc1fa2894d4270239a896dddbbff0a9f8433d4d72772b9a. 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/DGA082405872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0ee4b2b2742a212ee030a6befcc1125204966d4b3ba4ffa3e77cae74a2dbc3. 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/FRX872492177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb4088621ee127073cc417b24510342ad06c31e8a81cacb15f67f58ac9b98ed. 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/FRX872411671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9e1ce02ad9be375596720514927b4978c35663b1379e26ed0a46b7a43e1440. 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/FRX872411672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f08e8b14067becd644f3839a6a29386baf11cb6635bb1ec6173bc6f9e57bc8. 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/FRX452484068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9ce9d94c1d752b044d3d413acfac2435325dc3b46844a16ecc79695bef9d6e. 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/FR2X42418102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be244f6c9b927fad0f848b812416f8ff0a5ee492ac2c860b60f5ee1c08452b1. 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/DGA0Q2391007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38c1b5eb3f343a4f4b3c079ae6bfdb083220b9fa6c982e7f000fd6bfb632d68. 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/DGA0M2341693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf52834225e2a3e157b83f8faec83d3423c865d17083e5548c31f5fce9e57d22. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DGA072385796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e7b89e056b44b9aee1a117f2f97e5943aed0931bbd377116ffa99bd2fc7018. 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/DGA072374073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1174a509f74572c9d37c3b997986adb5c0ba6fae861c69a650fad4a51837f8b. 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/DGA072374054.