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 0x1ecba320ead9645a54f222948e45127d5f79cf9404cced0ed6382a23f394340f. 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/93274030-17fc-43c6-b791-b5dcbf1d03a4.json and https://artists.proofprofile.net/proofs/artist/93274030-17fc-43c6-b791-b5dcbf1d03a4.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 0x86a41899d76beb2cf8ffb6a573e899d720c7f281ce7f58e41855dea790512ad8. 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/INS180707423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ccd633a4e3a76a2013db02edb65ddfc19d0b9330d5809009dd1100e355a85aa. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:37:09Z), 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/INS180707427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15502078e092182b549ec70968d4b18c9ac442d3ddc24c41f9543c175fa9e389. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/INS180707429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3b2f59d2aba5e7a77ab5dc1b4d613c01ea4f7275bacc7c7dd609e1549a0b3b. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:48:41Z), 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/INS180707432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc0111599409c078747b49b7ec7c9229e8a317553980dfb7fb1c47d347b1cdb. 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/INM231401491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e117b64a66697b718189900c3c4457bfb33d2a304a6be060ef30ef7e903f05. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T11:03:14Z), 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/TCADW1806596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1deccaed5d5c560a11bcf55a8c4acfdfe1dfbcb6fe88b2cbe5059095f9865a. 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/INA331900116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4fd37c823a62a85067cab3ff982880ebbc9af7d735010bf2c0d323fc485951. 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/INA331100722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb4c082400368097151a0e31e2671a2883bf5d40c1126282dac443461bec87e. 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/INA331100723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e841cdc609d41743a88f38218b053de1b5a18082f36495cce670ec82729c28b. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:12:37Z), 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/INA331100726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea47c4419b559dbc224d487777b23bd0aa586999ac69e4e450b3f9ecdf662c5d. 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/INA331100728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8334934c8a81ffd06e9bdea9c4956a6c377d55945dce95d1ef29bd41ebea6e0. Chain 2 (Bitcoin): anchored in block 957961 (2026-07-14T05:58:47Z), 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/INA331100730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30488c5f71b1be135613255393d43d356b66cdfbff666ab555e608c8972138c5. 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/INA331900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088177db4387fb7b99f7ab8cc6e85c6a6a6a57a709794a428bfe575d52e2b4c2. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:06:58Z), 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/INA331000211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3ee818880f40f23ef1a943a4a6ea6542f4737abcbd228d996e0cb93c015b2e. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/INA331000214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa708a1df8c8b0d442b23596fc9c7d2346d2925b5a2d64213654e3e8155604377. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/INA331000215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc93b4df8b05fe3dc9f8e30249fae7b92ee8c279e8b864d255bfb93e7fa9e02. 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/INA331000216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37eb2f9c67bc81996357b9d112e639059ac7912d3924ba9003c40b60f190f7e. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/INA331000217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66fd8f912fd45bef6a80c434e8f513c6fabb63544364f727ff2a4e95a529cc3. 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/INA331000961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432dff388b2850062566019b67e3dc401a000ea1bd805d57b9f2d237c8b316eb. 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/INA331201242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e35971e7477c9a94715d47cf355bb43b80d2f4962ffc3194c97543dc931982. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/INA332000820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b24d7d50b234305eca0855cb58a25b76610cc9b9e96cb5b1875a0b12cc8953. 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/INA332000835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e413ca90849c6f78bf69dd54a79f24990800eb697ab246923c2822ef348bc5. 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/INA332000848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabccb05ca1766ea43d679df76c10795da989912e136d8dd8ec25d8f34f316cd9. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:40:45Z), 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/ING122200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94084b0257f3b1e58d20ec4f51394d697af6b547e8a74ae034c0df9bcbbc2633. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:41:05Z), 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/INS182301930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ade8cc23c7abb8d32dccac8674c7340375123e01e231c8fe969af743dd4ff11. 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/INH682400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9766310fbc23489197dd2c3d5a6ce0d33f5c36d07cff0d0c9417a16eb02067ba. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/INB942515433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbe048358a8ac3c23e6f82000bc60c1688463df8c7fedd8b2c36e7b303a6ded. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:34:58Z), 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/INB942515428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5456fccd80da0d72894bb6a2dd2d758ffb05c90fa33d9b417d0a53fd7902ead3. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:46:23Z), 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/INB942515427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcd52e5509cedbcce278ae3bb9957f9534b4866ba09ff6722f7523300edb79d. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/INB942515502.