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 0x69d79124df8e55875579e2ac3d6b9453c1e04da40f076a633ac9cce6195aa2c7. 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/7a897233-22de-4765-8860-5c69c5d46e1c.json and https://artists.proofprofile.net/proofs/artist/7a897233-22de-4765-8860-5c69c5d46e1c.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 0x3c14d47b186ae65b9f5102bb70a68d9ff31f3e3a5239c87bb52adb4ff96f5e72. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:23:30Z), 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/GX8KD2371654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31299908a2d5e403b6ee007692d8009b849736a6fe2703bcbea408d9f381b3c. 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/GX8LD2286456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd349c6884cfe0f3055355ee424e40ea49423f17835315c6e8842e97526161e86. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GX8LD2260114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3ae7b293c120e2c36f4925a7908d1be6d53a36793c283554186ddd66f1bd26. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GX8LD2260989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3269490036f84e91dcbeca75797f9c12a3a0b81ed370fb85ca600c387051ad. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GX8LE2296858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4b5944e755c2f4e55810e607e665b4bf0d44598160a32644df98139659d510. 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/GX8LE2232188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38d127f38e98358e92d23dd1d8e94cb3fe5c7db52561b97abe017f3df0b1f1e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:10:26Z), 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/GX8LE2273298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f1a8a8bcb9faa959fdd6d56864dece42d57b649952e812297e61021da99e86. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/GX8LE2283620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a69666c7ccad330f590a5b01746ce0eaec72d72c28291c9c5ee8396116bd4a4. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:09:38Z), 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/GX8LE2282172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a4c7a2b0dc25e62fb8828ec44089b5e3341f977f2f53539f81ab7791a90618. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GX8LE2282452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a80f64dd1cda90fd39c0cbe19d5b17ea037db62632ac7aabaf6695fd428e3c5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T08:58:12Z), 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/GX8KD2308701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120874a79d9368da57db12384fc54981d5def98e3d2eddd54653def43b13e3a6. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GX8LE2292057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9718e3920a8024329d8100f1205654a045473560e52a11d0b0200726e15d63c5. 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/GX8LE2275598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb077071321ade32f79fbabccec3c681974156ab28e89e61cbe4f574c9d72ef. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GX8LE2225893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64f15f54e8936cc8af042e3c2b6f4e41bfa4600c860034464f36acc53ac8680. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:30:32Z), 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/GX8LE2282068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbea93ab5f147483101c2ad370811c96879bedb3deee131c97db240c9fa4dd47. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GX8LD2318644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc907e3c1e385adcee826891d7e356df0954dc42995c9fed13925caa9ccae2e8c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GX8LD2379743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69566e27446c38161648d19406766f0dba0fc6900567c47c4fdd4836f9eebf4. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/GX8LD2379208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffb081266006fe2e19947b2c16bb4136bcb5b547315472f434b195ec9a96812. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:26:25Z), 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/GX8LD2300197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b60f60b9e4b887e1947f371760a3f40dbb627fc1a889c1a5eb1aa4e8e92a03b. 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/GX8LD2392399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6796fe09a9e0610e060a9028c07196d15f16f5107d2dd6478329e49579035b3. 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/GX8LD2299511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1260e7ea1a307f07857116778a9c29b37abe47c6d1480c42d7993b5644248d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GX8LD2291631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5df83d5366ca0a53b415254c7a18795ed4d62434c9d33fad6f799209d88e063. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:43:22Z), 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/GX8LD2206778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d66223e5852870154e974f88fafb7c9f5d4b962f7e89a446558d9983034ce5. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GX8LD2246477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfafac142b674972e54198a643205b21f0c6072cebf96759378ff362999fdf6e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GX8LD2239658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbb99b49e7e95bc24e1aae667e0afa2302e30e7912f18ab28ed94b137a58e01. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GX8LD2258968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52666f7c99529e603bae5a69a37b2728fb0d9816eec4a0529be0a706e7993dd. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GX8KD2323543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4737fbedbb1f4c211ff14ef4f8b66ba9c55a7496623080a1099ca5b0fcc8892. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GX8KD2352117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164099b15ee84441348b1b532585c83c2f006a1b23799015c8ae6164face8534. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GX8KD2367496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe422ac20286687768e7c600f912f89ffc0bd4a645c3547cd4140509b8307e105. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:23:01Z), 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/GX8KD2396923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b5edd0729aebb1c332e74ffb1b3e966205822ee9d5cd14a1cc5e914376d63c. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GX8KD2302592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7b817db8502ff7b825548fc86d1ea6e43057397b2ed1dfbc69af59fc85f2d7. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/GX8KD2397688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c15d31692a9035596be98b79afe23724ce8f6a9e734217d5d03d40fbd5c5dd3. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GX8KD2335641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7737ffd64c5c8733fa6dcfeeea900cc4ecb3b634d2b6a1c33a03bd46d57958. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/GX8KD2309463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedd9a268ac175975dbe5dd0cb910a81eb074db2f790e01c78e7fc8091115faa. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/GX8KD2346065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee006d87b99b1c4b1b21cc440835fcd8cdbb1f1a43717a014e0cbed474ff1c48. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/GX8KD2306386.