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 0x0955a2b0c117da7fb275d8e23f2abb2eb2f93d5f96c05b6b0f926726d1ba4a85. 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/a13798f5-71ba-4f01-92fa-e0e578313965.json and https://artists.proofprofile.net/proofs/artist/a13798f5-71ba-4f01-92fa-e0e578313965.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 0xfa04886ae6d7bf9778e2b35beb6b64d8f356c893082735799e4869b82026cb78. 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/FR10S1648759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdc882f574609354dca6728229f1f8a6205565a04a6144c60f59ae690ba7bf9. 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/FR10S1648762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6541da31132d87e33818bcbe00845ca0f54d96d124c3481a8099e32e35113fab. 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/RUB421900825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996b9ef2c36a08a76eceedf860dedbeab2b3cc0f4f1f0b1008f23db1e823c264. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR96X1929108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da2303ece580a464102e2d1f2417f47b83819ebfb11ce0a930e53e369cb39bb. 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/FR96X1978049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6199863bac8c22f9e655aa1a497d5a1dc2d1b8c8151c7576d70a36371b8433eb. 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/FR96X1917817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bed80a9e65b0dc2e3d68650d980e3187eaa71ddfb94bde6d11ca0f087c0828. 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/SMRUS0064570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6b44677da3cf3c4b83983af0536c63185d5e1e95f94683bab62a3d91bf58a5. 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/SMRUS0067540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9a581ebeb85ac1bbd917e7394f73cbe5e5772cb5f44c0443ee77051c383af6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR96X2250889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b454abefb91b148df43d38d4a954870fb685f7dd4b0e4b537c847758f098d22. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/FR96X2250890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b39e2087c32b7bf2a4b3a46a0b49f173e36a51ad58826736351c149e1b179b. 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/FR96X2250894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fa7213aa564725a34393323ba772332dcfedb132eac53b383a97030a0a46c9. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:27:07Z), 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/FRX282268863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab7e38f3ca46622fc8899bb4df31ade89ed7bf65403883d6d5db34a7a9f0bc6. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:23:53Z), 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/FRX202399289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307073c255a82fda0dece4e3497f6a6edff987473144ef8c11cc5cc6c8cd5f24. 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/FRX202399295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7994d7694dcfd9c3b739e2812c0ece350c697cdd0cce8346f0ab97030fbb3b14. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:30:11Z), 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/FR59R2437431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cec045eebcbf9a413a4539253c9c527991c1fd1f6b9de29fdd2f21e9d89bee. 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/FRX282409631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a050dfad29ba19e40c7ccacc14f8272b8c3382aa56296dad3366d784e00c61e. 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/RUA582002582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984691e0e8575ec6d616fe4468ed5f425ccfbb5143077d4ba56b23915d16afb2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/RUA592000140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a74bea0dbb0b39ec9bd18035c5f4fe74edf2563d081d7c92bbfaf3de08a74e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZDA62158138.