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 0xb330ec2027f433967cbf3114cd9df9c27e50dc795dac5b582a1ab3fe20634112. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8d2f452-0df3-4fc6-8b80-279221215515.json and https://artists.proofprofile.net/proofs/artist/b8d2f452-0df3-4fc6-8b80-279221215515.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 0x043ed9108e60c78bbf3305242eb7e0c1b0f7a746ad79438fc41447453047ed1b. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:33:57Z), 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/QZZ7X2597299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b382fc6b9d9be47228d09b1b2fcabf813782a3236de618c49bd7d04d88669e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZZ7W2566058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc7189b8546fbba56008af03f89d4895fc513e780465b32e4e998e0665629c2. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T01:00:45Z), 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/QZZ7W2565964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dccaaf150001de2060763be6626a15d9bbc919b85ce26ca9349ccd9a7ca3f2d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZZ7W2565974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21748ed3bd0fc163b0f19640129758be1a9a21bf0d9343203619ad6e10c716ec. 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/QZZ7W2565973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35eed36ef663283a133e84efe6586e8f262c14ad2d6f2d792c0b07c505a244c. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZZ7X2528721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557f60659083a64e8038d9dcf3cced558d927316e95bfde163528afa331819db. 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/QT3EZ2558941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97301169ac0c39cb50adec182c0ab38ad2348c2ccdf24fa52c67cb5d808e25a. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QT3F22577057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b02a47d7993de902e280580d08ac0a8074c06296063f966fd7ac8647ade907. 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/QT3F72514726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbaef98d86361a1e4a1ed151447f3e2f783a1fc27a03d8545ab7dbc5a1af22ba. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT3FA2544090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6db3f74940956741b0e03806688380270c33483ac96fcb57d78780762640962. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QT3FA2595259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a420dc8ae3bd39ea5b3474987a35009969e818d5b3358d0f940f4b8fddd401. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:08:15Z), 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/QT3FC2504500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae61a9220aaf56c4a1127a495ccde2f3e97a828a89f8e0d4088ac4ff6537bc8e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QT6E82519324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f176b5e681d465b3d90afa60054c223f0198c5175adb54b9ed1074261d0a46. 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/QT3FE2582614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704cf80b88f9201f8fd041fa8b6e2691562bba6a2326772d39f0a7c21d7c1d5f. 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/QT3FG2575789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab6b0681f15938523c3e734c3c45b3fdac4ad5d0e7b4bb01323816d2da8ad37. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:13:08Z), 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/QT3FG2573737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8f24d5e246bc64457780a31fc7db66d926758dba45a1d5d1acc020caf999dc. 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/QT3FH2510784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c43ff18f8cef4548473e949e8ff4072a8380287bb0c32849738538cfeed791. 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/QT6E72519460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00cd25b8be03838ea6159018f9f4c9711c510a1472e2f7f05430aab94c5f76d. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QT6E82539887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5bc372ed2adb886f60cb7071d42b7ab45f2c6d5f3440644a46cf302c5d6fc4. 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/QT6E82519325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7895916c9f12637b82b8f69c0e62d2e7259f3723a13f8ec14fbda46992066022. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QT6E82516939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0410208a4b06b318fdc9f1cd3f3fce6fde58956457215ae2467aa217de2b2c3. 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/QT6EB2528966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ed92be98504c1968347bae979514de15dddca71b5cab35e24f4ee5787677a3. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QT6EC2502879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfbd509389f73c9cbc83a7eb8500f249e632b7a16ff55ef799907633eb057cc. 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/QT6EC2585225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e95ab75c9df142da03a9e95d9b205adfd271a6f42a42c756bd12ef921092557. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:45:42Z), 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/QT6ED2561685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64125191d9c4fd215edf8a5794031a4a0823d879fe30e482a32a165117708865. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:10:33Z), 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/QT6EE2576693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6db5588fa89e226fb4b9ad21b995d5ba305a2a6074cb4e99c5f00d2c331c88e. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:06:29Z), 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/QT6EG2502994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde518dfc22aec75c797d88d19829799e5f5bf61e9652b853de68698c7bec2d84. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT6EV2556390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27b3644e0bcdd22168237cfd353d2c73b4a9fd6a81cd8c3395ac7a8ba8da618. 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/QT6EV2550355.