1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x2fe0717997c871e444458bac0b08233ed8b3bcee28eef61b72a760afbfef750b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/574cbb28-822a-4215-b169-60e61c5199f5.json and https://artists.proofprofile.net/proofs/artist/574cbb28-822a-4215-b169-60e61c5199f5.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 → block OTSBitcoinBlock must exist at that height 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 0x9df664459e8fd2b6ea8ecbac8391a8eb9707c0c4d45521378183c0fd3b9eb916. 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/USHM82197720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df664459e8fd2b6ea8ecbac8391a8eb9707c0c4d45521378183c0fd3b9eb916. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USHM82197720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb355178281f5b6be5c4163555cf3ecb0af149fcea1e38cc30f77bdfda96b579b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:42:19Z), 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/USL4R2136849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061c2bf9820f90dc874b2a5acb664ad477f1ad4ebbca0f00a5bf2fc0a194f16e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ARHNV2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9ceadf5dad9cd9401d6c006c030d6064aa60bf7982002ac0d3e2aa861f92ee. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM82215945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cca26c76356f1e82e9faeb3f11fe0414a95998055fdbdcdc0545235cbce6293. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:23:35Z), 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/USDY42395516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a8a81c0568985eda60684af682430a187fa60ac3f2b6d9f2afc1d6e9e008a3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USHM82392679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7139a7d26e1cbff46960d7bf3b9a75a3344f20d5b828ffdd9f3d6adccd44bcd. 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/USL4Q2376567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f9e136f3193baa944dd4f4810c44590d703bf6bde3c3ecb3984f738732fa02. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/USL4R2382486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00e5fe38873c1c4a6136705e6fd7e50d33bcc5ccb733c0c26fbdf41166f4ec0. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:40:51Z), 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/USCGJ2437054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1e88135828f84a4681ee69e84aed739c8169f22ba53b7bbaadc6f997e6dd7e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USHM82435626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b8eae006ae5d6eebcc356c4d75ddd930a50ba0ac7cfea2a70feca56d387f73. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:14:36Z), 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/QZWDE2496065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8bb488d2a4a79f632f324cb36a8f37adaf059654fd20596b775543de027bdf. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZWDE2496068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ab8b90559d4fdb255e80d241ca5887d78483eb96e18c7613d21d10b8090d6f. 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/USX9P2446478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fb2a0896ca57e309eede6431cd76711fedf7c4c133a6accc780258bb2e9a4c. 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/US6QR2500034.