1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x7572b23a8a1ec3f9f11337496d39d302084d4efb5bb95ee48168b2a1c6b3f22f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1450b481-386a-457b-ac51-484ff534ba56.json and https://artists.proofprofile.net/proofs/artist/1450b481-386a-457b-ac51-484ff534ba56.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 → block OTSBitcoinBlock must exist at that height 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 0x87f519b006b566f020f9a5d1f95e4a70be5ad3ac0ed3ac9f7cd3670379dc1deb. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/USJE71510026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699f172799b944d652e070c9ccdbd0e95e2c4e7edbabcdbd5de25125c06a3643. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:27:34Z), 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/USJE71510027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b50f1e724aca88d754f1b5e656b1c5b5fbd805c45b4e2d7c4ef46622685fb0. 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/USJE71510028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740f39cfe411f79bace230f8e319c58d826d6fcadf26d6fe5efc0939f95fc63e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USJE71510029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118f90745edaccc47f8f7398059d88da12cccc20bdcccd036c73b5cee4cb8857. 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/USJE71510030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6ca05367cd6fa411aaef3c14845de557cb535d1027d3b9f73d119dae1290c1. 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/USJE71610016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e5214ca0b35bb1a675c736e9785a327ca8cceed14fd940af99b978721cefca. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USJE71610017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977dc5e17fbb6aa46031ec9c792940c6e090219a469473da928b3adb097c97a4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:02:14Z), 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/USJE71610018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978fd0feb92ae2dcd9b1cc0e36d804ffee447a47b4952714c6396e8d135673ef. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USJE71610019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ce389bfa7e90c644cca93c8458fe94b6fccb7940efcdcae2694240d5a6b7f7. 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/USJE71610020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916da81ae8c5d54749ca7c7e26b840f54394ad21eb897f318c9288683bfa3a25. 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/USJE71810001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fd6ab8a5fe14ba8a48759dcfd4a001051ec0c3d5520832fa0a457edc8eebfd. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USJE71810002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922cb0c2bd94b4287338bf8ad9410aa1482f48c3b6c0e08a4b47e86b1952ede2. 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/USJE71810006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916da81ae8c5d54749ca7c7e26b840f54394ad21eb897f318c9288683bfa3a25. 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/USJE71810001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fd6ab8a5fe14ba8a48759dcfd4a001051ec0c3d5520832fa0a457edc8eebfd. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/USJE71810002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddf88c0f857d178b17d47b1d5810b251d380a099f918a0b5248a6fc123179b8. 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/USJE71810003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124a54ec61e87beb6e7e61aa65af415307bd98850aabc7421e0460ca563ef722. 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/USJE71810004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112efec6d10b918a40b2d47644193b955df7301613615902b7b21d5f249821a0. 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/USJE71810005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922cb0c2bd94b4287338bf8ad9410aa1482f48c3b6c0e08a4b47e86b1952ede2. 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/USJE71810006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93bd28349124b881a113bdc2e69a3ac93e3676d09a3af996b7cd31e615ee217. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:18:08Z), 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/DED832000119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343f56f795407ba80d4531c8ff59b4396f7b376b267267c843a6e7d74f7134d7. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/DED832100253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e044dfc0a24813d5b5ed4cd3591c8c3f02c48c3f601e7c55f1d18eaa48d20a. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/DED832100254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe161cfcfa46219b60603b9d2391f26788990bf78a95c48f8a80676f74b731edf. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DED832100255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d381a52fba501f10910ab07429ed864cfd4bb0e7a11e2f0a8e1d2ccbdbc777. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/DED832100256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e0999e728bbd65321a48f65ddd60fde5b006d4764a9b54e42300102e9aac62. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DES562015604.