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 0x0008ba2e08f4fde63d63c9342decdb5fed74860890f23937c4bbc08d2924974a. 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/a13dc8a9-f3a4-4d69-8a29-a1878723b157.json and https://artists.proofprofile.net/proofs/artist/a13dc8a9-f3a4-4d69-8a29-a1878723b157.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 0xf88cc16e8c56408bbb28793aa68ac699607ee1abaf0401ae23e6972f5be03596. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:03:22Z), 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/MXUM72006591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238226bad390b7736fb9253b001cc36947d77c05a306346a2786579625576f95. 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/MXUM72006592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f71d67d011a53198abdd3bbc13be5fd54ca8895fe7368cb8e95b7ed6eb06d62. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T03:19:06Z), 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/MXUM72006596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620a6f54655a9e2d4c0122982b4a6fc307d254283945b036a1c3fec8506b42b4. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:55:23Z), 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/MXUM72006597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6f2baad44800a9c96261f118902926f9a9ff11cda930f072940e898391475a. 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/MXUM72006530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36c9545ad87ac79fb393dc152518a475e35c0190c28f5be2de4b78a81668e26. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/MXUM72006533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7687b29aa9921c2baa0f107fd0f7713af2d50291e0bb479614e9c70b67c45cd1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/MXUM72006534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be98189e9ae1e56d22326acc2a74cded20ff2f85ac26557171c3d06a30daa17. 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/MXUM72006535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e749182e84122045bc0d5536cfd8ef9e60f8309b8fc84b56c1657baf4d4daae. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/MXUM72006537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608e08b01ee3b85db73fb9ae3d51fed6491534c3c46ea8e3c32551271698a359. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:56:26Z), 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/MXUM72006538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f00fa69263a3e39d9ffe2da377a7906afde8349f5540349d2f312af744498f8. 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/MXUM72006578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4e38432c8e9bbdc2c3efd720a48a92ca8cbba468c23e134055a48204fe515a. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/MXUM72006579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1e4a93cb0a8441bea7d8f88f654ca38f5a889db30b89a9f12e0448d32b7664. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/MXUM72006582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22062a2645beca99f0e97e5de4f9fa101d633bc59e2b03c5658f7ceb958237b7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/MXUM72006584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97e04876feef89f272c517c8f98c00acc4f446037eaa36da170a6a1d0691c9e. 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/MXUM72006585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f49531866a111e35338f3bda3741714aa795bcd2982a60064eb46f53700cc1e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/MXUM72006586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b8ed376a0067de7ca2d833044659005f5e6679b0a9fd421dd7b04873a0d335. 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/MXUM72006588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5985dffb0bd52adf39db4d7c98cc330353c5779cce7e823b8f43588f740b3f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/MXUM72006590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6971e8bbe31d06de1e7289bef38190ca8f9a48224cb68dc98da2dce50980bfa. 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/MXUM72006559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd143dbd11339e59675adeff2008f39bfe6432b5910225386b4e7a520819db232. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/MXUM72006562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547fc95ea9285d9269408c8bd903dd8c353c0427a3273808f7c98536888e99ad. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/MXF369231945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bf01711a0db5ce94791d840b5f572752fa69092978878932c870708c5fa644. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:38:20Z), 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/MXF369231941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6e2b9e6026afef3dd9fd9076b5a320be14ca5bf3e74ffdb34036d17ed44ec4. 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/MXF369231944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6e1917483b80e0e21917ad0ab1dfe6752feded4199cd3c2266607c263546b4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/MXF369231943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41efd50a8ebe6abfe4b9dd4d4002a3347b104d3ab533881ce8f5dec42a540cf2. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:23:08Z), 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/MXF369231940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4779f35d3c37c232dec6bff0555aefcc34d9c832d3d82897f17b114cf85ef69. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/MXF369231942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97349256c92ec1ff7e7ba9b9add28e1d6c80d07c0c84c5d1469a4d1382f99329. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/MXF369231946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1fb88b89bc1a3101c1616410aed9c1ecb3cf406a279756807dba241d05b21d. 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/MXUM72006549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725c5e55a11944ef2836dbb4fd9cccdceff72ccb240be2944c8cc0c67ae05612. 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/MXUM72006573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0091d1b2f86089c46efd935469a57a0767e18264c55d37dee67f434ed8fa1bf. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/MXUM72006554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b605371f74c05e85227e81aeac487f3debc1976854f0d633d09a4ec50cbc09. 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/MXF369332460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b32c57bc3391e58804393ac80e988bc581aca43971d81dd8cd57c6f478e7abd. 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/MXF369332464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9413f9f6bece9ce4b9c3730d520331a8b7cba1b24508ef1adf7ef28499e67c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USCGH1614246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f92cc2a6878f6d837c3f1ea4e9c74264a07e272f0c3b67ec2919a7809e30b9e. 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/QMDA61864944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe337ba06315becdaa489169bea6214c8df2e52f88f0b604678f311fb36a8acc6. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QMDA61864945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb059561980e301e26a4bbfe359781da8864190cda2a0ee5f2e5369bdfd6c82ab. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:11:14Z), 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/QMDA61864946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7910fa08779e6af70de54739d1f7bb95daccf2637d385b1c004da3bf867c6c3b. 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/QMDA61864948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61986077becd999e28030089daa79017c8955d1a1e86ae8dedba1afb0dc99145. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QMDA61864950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1c3cbfc14336532c2941be3198954bdc224f1935683e4cd44b679e909fbb95. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/AEA0D1893517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff3d5cfaaffeb8d59474ba30113a1924789b93c45d5e622dea4a28253bacb8b. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/RUA1H2457854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42005008f1db1ebbdab838e0c106a7132e1a6c17dc3b451ad562a7ad1e2cb87. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/AUMEV2526937.