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 0xb33e416c101d7330ebbc7efa8285c5e0ae08f41eeef239729d63c0e2ef5e8277. 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/f0550685-37fa-4df4-9469-cc8afeb83001.json and https://artists.proofprofile.net/proofs/artist/f0550685-37fa-4df4-9469-cc8afeb83001.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 0x8838919603983a542edc6e6d5245d6d7536573c30c493eba3b1de1133fae5b92. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GBLFP2583971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d89eaec4f044001ff855eed98a6fa086083e3aaf504596971a2c6dcc485eb4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:27:11Z), 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/GBLFP2593225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb76fc2a23aa9bfd76d82debea772674c3004d1bcfbbe50e15700eec430beab. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/GX53U2545715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1855c199c3b408e561d51491d263b879d727c48ee3c061295298ab0c700a19be. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:54:47Z), 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/GX53U2545717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a05e75bb18613ae96db2e13a8c72d25fb557584bb9b4511bd5451df91be9ff. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/GX53U2545718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f15ec2270c7170bb4eae8753c2ad43164d11390892ac9e407eef67f29c3a031. 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/GX53U2545719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ee9ee854e42b917a133a1b7dc6c832027d45db89bdfd06e1c3c7db2fdf7932. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GX53U2545721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0379f07e12c6d18761ac16f223fac1372d49b04092eaa9f98dc5f5c5eb657ecd. 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/GX53U2545722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6408e9dd283ec7757de54479db4ae984fb58cacee213b7c8958d414a460b4b8. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/GX53U2545723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3510745cf02de4504a9dc568fe489a7521dee5bda0ec0f36777fa6ff5f20f3ac. 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/GX53U2545724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6337fe3259c35f88e6c422e198be97c6bdcdcf754828e6703cca629e92795a37. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:35:30Z), 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/GX53U2545725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1654b63a48a1ee4addff569714c6e2f04b75c7f6f71f7b33cf80abc1ab7ad0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GX53U2545726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9858a1ce94bea9256005367278c2fcac6ffa31bb1a02cb93e1fd2464a09c3e43. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/GX53U2545727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77908509fecf37cd0a511f27bb4bf301e739d594b41cc4b52ad70572fab8f66c. 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/GX53U2545728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf210470e2bac6bc0437d23a3ff2dd881bd1021f22bc2ece6fd51433860bf3496. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T23:01:28Z), 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/GX53U2545730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ec762c6a3d5240f22d2369fb11dd49ad8353c81881055ab8fe5fe8093bc843. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/GXHAF2533949.