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 0x3929a2cd0b0649f097324cf75dd5dfd927f7237ca23a40c56befe4378614b0de. 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/6cd0143f-3065-4d6f-a307-3eae2d6b4140.json and https://artists.proofprofile.net/proofs/artist/6cd0143f-3065-4d6f-a307-3eae2d6b4140.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 0x8fdd1beec7f9088f969318caabbbabd79110739e6d8581ed29f051e8294ee68b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/UST8K1634348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb1ad0fa487ba55bd8486d48b31be3ebe185b1e958c4c023510840b02bd6e24. 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/UST8K1634349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec057b782e464b442f7c87ed9b0aebc77d15118f4bef0c5d4f1580416eebb9f. 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/UST8K1634350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c804a07aaaabfd8a30702ddec01a3b1c4f594126865bf13f4a2cccacca2251. 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/UST8K1634351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9651adb3ab9a7c6d8d7df38e6bdaef9c58084fe7470e6f56d976f9fd592ed256. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UST8K1634353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fe57f622383c91bffb6dd34069c7f6f954e3cef71c25ad3277f7bde4489a9e. 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/UST8K1634354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fbde73eb44b415e8af204ff84b734b5a4baa28ddff6ebed3ab6ceadfba9fa5. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:18:34Z), 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/UST8K1634355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d1f802c73422310c018b694a8d22966b31ea0061c050feedf80253110db051. 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/UST8K1634356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24a786f75848dba7cbb29e49b114c8ac0c757e58740d26cccd87e48899a3f8d. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T11:11:08Z), 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/UST8K1634357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0378f83baf775312e1546f9755e483bb54d110030c62c76d06b632ca3dc0190. 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/UST8K1634358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e885b3e8df47e40dc78045a8a972f2c445579c551ba2ef3211fb525d8e2f9d6. 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/QZ4JJ1769654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c8c8738648e8a21190f789abef1d9f31640b438f059d75cdc1f020c28c1a15. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZ4JJ1769656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f64887798fdc3bbc37e603ff3af5e0cb4504739807d8f0417657cc7c206a6b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ4JJ1769660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975e3c39ee0d93f2258a63b9e119fa152a2304c40862afbed0c2eada143dcc25. 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/QMPKX1711552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70653b2737410d1187515fb2bbbb7b141dd0532b4e827b3dcc8625851b21d40. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:43:05Z), 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/QMPKX1711555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c35b12383bcd3dc9b96e69e3e2be5999b58ada9b25fcacabe4fe6d1c4e18ee5. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QMPKX1711556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae1e0e03a48aabdc1cc91b8a4f43282d55fed9a46b925c2f4c8425c08b675f2. 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/QMPKX1711557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29784207feb9eb0e97675b42d7d028b4d1dbfd51437322b49aade86443810461. 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/QM2PV1793034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfbf087bee315bc84ceafc594c1840c878eacc95694472a31c3d8141f77f387. 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/QZ9JZ1726890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce8825de87b970e9f2d835fb8683785368658ad0f94a6c0f877e1ae687f240a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFZ42046598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7eb460999cec73202aae89c837d535b30ba37b956da0812cb8d073cc1d91f7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFZ22093257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43901076a7b13f198b77d9c711b9de9d7b70c104f159e949846202f15994bc30. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ42046599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1c499a37d4d758d010e47c092b14317564148c0298c3184b7039140f0e6ee9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFZ42046600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7e1d8871f0a880cac3d36f975f6bbd417647a4da033cd046905514e477b1ad. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ42046601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7110807becda6322be9bea0ac6bf6b9bed31e4df25f240d84831663eaa466e7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ42046602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9383462e205d72525e0695eb59e333cc5f046644b996d3e36812c6d570885ba. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ42046603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b6a88f65de0c427d2a5dd7872c09c391a88abaabbf6ad511ce989fa14d2d70. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZFZ42046604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69406748423de202ca1649d3c343bb22acc55c188af79d7f63b5a8e95df7aa4e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFZ42046605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603b1a414f7adbfe68bae9f37899f5aa27382029c06bc314247b3f99a7c06dee. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFZ42046606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076ee6a45fdd958e5716ee1180cd01d0c5458ea445d633adc78bd5388653e5ea. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USEP42303017.