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 0x53be77dbc984bb1ca1526000e733af969ab5c9a9d05804d81499026078a797e2. 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/e938d9b0-476a-4656-9dd2-7905e4839687.json and https://artists.proofprofile.net/proofs/artist/e938d9b0-476a-4656-9dd2-7905e4839687.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 0x68677a9aad719f92fa46c916fd5bade4cc6829a0bd17981ef507d3fe7b7608dd. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:25:25Z), 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/QZES81989744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92183989871d65d08c3bfc82f175d7a0892a9aa6a512513068f004c7b291b1e6. 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/QZES81989745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9159a7e163e7625e368454b4002db298748973c689db39fd6c64eb647efa8af9. 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/QZES81989746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e89150bff578013d05fc00fb5b566d252d2e4bebb39172dd1e86fd957752a3. 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/QZES81989747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad40a5db18afdd7024b3604ee011cd4a3b0ca67d40203996d7f426faa20b2d4. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:23:18Z), 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/QZES81989749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf473f86a261e0df02f268c442c6273a29d43c1dd94e190fe3aedf60e9e2e1e6c. 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/QZES81989752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc246928c7015a7c7aad869121e2d3b1361c11ccdf85819d90b116ffcc0982c. 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/QZES81989753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe167fdf53f3ad38c80ac476be47b0eacf1871cf34524e428c6ee4ca95d5ca42. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:06:35Z), 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/QZES81989754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a733d68cb1d49db8626595d0742a6cb881562dadcbcb9da66302edc5bdc9bf. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:44:47Z), 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/QZHN71934337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002c0d8da4e4b868b04fb2ce46ab342a6df5df390ebf1423f0eb34fc86f9f1b9. 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/QZES62007787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced6a9de2929ba1f2f6275c9e3090bcc0e65b3e80135a8c5b018a06e71cedd9d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:43:00Z), 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/QZFYZ2122944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a8c790d4156d2239d9a7f09ccfb8008caaeea0e2f1672682bd049348427ff4. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T16:26:23Z), 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/QZMEN2132424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd9b75f7b69c994026127a835be83528ef321b0b2b3975375dc2c0d7f98a7e2. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:12:16Z), 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/QZMER2203688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a940f71c0d1f0fba56b974739905e5bee3de1344ad6979ff893e66de7f89fa. 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/QZNWR2265017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649c84d8273ede2d4a97391713871e1f02779986b535e27d197a0f8582a9a29c. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZNWZ2244282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd3c93bc6dc15a3123b12a6a2ad724d38ddbd0d7ba4a7e469b8d34fea1d2e99. 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/QZTB62260159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b13001b56d36e68574efee4e5b6384007820d0ea402129fbdd9ded9ce767b4. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZTB62260160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb593e1a796262a6f15e7857537a5a356881ad0b76a08b7ba64968369906691. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZTB62260161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68811226f5dbbbd9147158c11e6391835b6a8c75b78ec0ef23a2f6b1cf4e8500. 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/QZTB62260162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe815e5b5267791e48033487e06af4ebf09e763bfba460b5d9d1830e4654e6015. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZTB62260164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ab80e377ddd590031343ae22b4fc31e20545bfa8d408100baf81bf6ff3575f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZTB62260165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296e1373ab6b98094d4f7b82197b0836f15ac52583344f5a1e98275a36ee4e50. Chain 2 (Bitcoin): anchored in block 958863 (2026-07-20T10:27:46Z), 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/QZFYY2379359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f8d52d86f0c2d45cda992807c38eb4101987eddbaa613ee93a30dbe8589f85. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/QZFZ32347417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50fd8b4fbb99b7fba70f196d5a6d66654a7a72b9bcb9a88d9587d30db13ad5f. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:00:52Z), 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/QZFZ32347418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2509a04d245cb807e65afdf86f75a261e6557cf99bf8e77de17f6ea49bddb0. 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/QZFZ32347419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f86f065f5808c8c4e4920f30591d3bb4704178c36a09d1bce3068e70ed477d. 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/QZDA42340740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aeaef2610f3f62a85e1a1d0734110edc1a0bff9d27309c4acdfc21d6136a8d5. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZK6K2342188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b7810a8a2a7041278a1ff1451f939e2e8b0222981203bda49af2f63eb9c87f. 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/QZNWV2394871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb897758b799a20d04966d861041202d77128d22f3480f6c0c7ac5de44321561. 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/QZWFH2365224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a08b807286a689499085661e3e69423a0b0d5115a429197e6e7fe1b95f5ec3. 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/QZWFN2369070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5486a99a7e85af4d53a7ed239d97b0e5f73dfbdd1124e2bf2c43f7db4a8005. 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/QZZ7L2427913.