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 0x27907f3fd814a5a1c2faae89bb183e7b96d0fce1af81ae547c6617ea16e73af6. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/65b2a520-ceaf-4958-8063-1045898b7851.json and https://artists.proofprofile.net/proofs/artist/65b2a520-ceaf-4958-8063-1045898b7851.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 0xcebcd1f0494c01fc43ebd3ba126c12652e792f5f8e1ae7d118cdbb0420bb5f30. 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/QMEZE1753019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08fa84c08b28c4a431a889f5078ab4793f6ada6dea96317726a3bca4b5728ad. 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/QMEZE1753023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d23785b3c05cb9064d1a1e5af4e995b6a6710cf88c3260a5716e178fd699375. 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/QMEZE1753025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3b8cafb0c7acc4e8bf27ec4bdf8e237357145512fe8fc356b47d0ae90bacb2. 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/QMEZE1753026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffe75ce511a4bdfd6e5b75c5bcd4e83c9d191a9a0ddf698942e18118617d0ab. 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/QMEZE1753027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b9811a0950860ef9ac46cb38d6b848386bb2883f663037048fac07ef704e77. 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/QMEZE1753028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1114188ef379ca6f7ff5a7005810f24f266008112e8248203572c9483a7465a. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:36:01Z), 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/QMEZE1753029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ff2e9d52bd4a6bd3f5ed2f9170daa62c36d3d9e84727807d13be18a814c1ce. 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/QMEZE1753030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46dca39b5e15e42a6f765f9991c42c93d3988939221d83d0711b23257f1651a. 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/QMEZE1753031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922da721cec1e0fcec00b17484baa0f7d488215a956b38f183e71a74572cc182. 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/QMEZE1753032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026ad4e7c45ef6a7be20492390a959f29eba220c2b52a70ef70fd0e75a100e29. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:52:01Z), 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/QMEZE1753033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c3c5b8edf73f9c74dea123d027a1a1f65bea294529b0d7e540d0c237f66387. 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/QMEZE1753034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbb22b36e3b3f8f05d4b61d7745ce9efc7bd3fd288903acacd47f1c3d22222b. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QMEZE1753035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5502434face8ff4bbe8f3a05fae8b87ba0655381b5a0f7ae3b1100c2f6dabdc2. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QMEZE1753036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5dff7947ffe4a75968ec289a472c080b33c11b265c01cbb65f4f0f6bf80daa3. 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/QMEZE1753037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee796ff76e89993aae388f6f2ebac5a5dbdc65af9f5b68e0ac14f43143883264. Chain 2 (Bitcoin): anchored in block 958573 (2026-07-18T15:49:54Z), 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/QMEZE1753041.