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 0xac48e01911484b9ced89b0501cf320563604cd32947493906570224df67fce71. 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/434e9c60-2b55-46ad-8d42-b421006157be.json and https://artists.proofprofile.net/proofs/artist/434e9c60-2b55-46ad-8d42-b421006157be.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 0x44521091fd439d83b61345f6780adca377ce2a4359a370a56c27df6128b651af. 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/GBCEJ0689982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe0e4c1102baa78cf376eb4862320628f00d36cbd9ee3decb6aa8f99ff05400. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:03:47Z), 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/GBCEJ0689981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a4b6d2a8412348015aa8f9cdb91a01f6eb2d68c7d908ef41a0915d1bb9cdd0. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GBCEJ0689980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f22b94b3cd7ac12e709f0a644d5a5097f735c17bed9f6ff5f3d0821c9e5f84. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/GBCEJ0689979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8761b681079c9c17205bfa1c72be7efe4d3d47b8c26dcd3194b9257dfb4ec7. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:06:56Z), 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/GBCEJ0689978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb520407223d7f9df24c2ef75884c40af92793ff415ed2de0ea4e90b4830f8850. 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/GBCEJ0689977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcadd31e893bf10e783763285ba9c0cdf06f66109fd79982ae711a5ee1817b3. 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/GBCEJ0689976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800a26aea2d97ea05e48e190d7542b21b2b2d5ba4a79caed4b7a4e2fdd49de53. 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/GBCEJ0689975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1729c9e8abe307f6f12c9589ede2d94c29955af4d4cc11caf6dddd0d5e76de. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GBCEJ0689973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430baa63330465cce1e3e55c5cd177085186fbd943d7d4a801215e82c2a6dae3. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBCEJ0689972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225644d411da2ea7f3065b3869bc99de02d1fbc8537233cdcc87559c52e9cdfe. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GBCEJ0200128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d61e1034071b173b769615ed875c1c60d6940e2b8c3647053a514c2ff7b9af4. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GBCEJ0598894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc339c6f3d20ae44b988f92081f3664cbd29814c2373dbba6d5edeb1fb2b193dd. 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/GBCEJ0598893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d0a9236a0154a1a8dd3e5784ead555029140ad48a49653f2994422381924d6. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/GBCEJ0598892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c1ccfad334932c1c98ce39003879a26f4260dae321970a1eaadfaf5b98657a. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GBCEJ0598889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de4ed98eb50eecf2ab686995326fe7452673ae571abf4eac645ebd916664c3c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBCEJ0598885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1da4459ddfa7af1aabf72d1d64fec25f31aa452ee888b16ad9e227ea532d84. 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/GBCEJ0300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dcd44b11bda1d81d072b2536182e20fb4a026ebfa44a4ae585a26f58dd44f48. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-17T08:57:32Z), 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/GBCEJ0300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af874e8bd7891db7ba7d52d7c122b6a2fbbdf1e7cfd30f015d9d272d88fae62. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/GBCEJ0399939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fbeb9c4a27ec4f764f45e484a9e41b2c32f672ed2fa80b8920d2da350372ce. 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/GBCEJ0300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc35d9de1abed6bc0b0d9b34061e7ede1334e83ca8defe9a6ff9b543cb360a04. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBCEJ0598810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5af61b2f80e34db0259a05aa32b23e293e14f6691f8395ebe99be032ffde687. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:51:33Z), 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/GBCEJ0598809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41fd8678d031ff5b7aa18d10f80e58cc3cfbd0262b2867f0fb54d47819d572f. 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/GBCEJ0598807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364637532e38cd6f04a2b91c8b6a2ab4287e95c086a9d457b3b8523a55f2d563. 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/GBCEJ0598806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38749e823d2ca9ee82fce75260f3f9d70ed3533592dbda94c8e462ca3e9e2049. 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/GBCEJ0598804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362ea557ae239f6eb2c308324e8153701e1c5937bd9dba4f7e1c0e694ba6dc98. 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/GBCEJ0598803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d50511c6f47e84164cd99135cf03c6f41e1a835ac82e723260a8e23aa004b5. 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/GBCEJ0598800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4482d2bbe8a01592e92fd86267e26989a72fc30608a3277ee9cf6fba61054ba5. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GBCEJ0499997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8270757f5c76eafcf43228a147f33ea85592eef60f1fe62a0bc6757e927260. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:46:52Z), 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/GBCEJ0499995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765d69d6b306bc6e7e2fdd87aa0b43e81fecd49c7f8bbd0c47da9218ff6faf4a. 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/GBCEJ0499990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960acb22fb5608255ab664cb57589891d6df60d4570267efeab214710857a824. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USLN71200189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f973f0b39f6af85a88a58193fc8f979aa8831fa4bb99f4cbc278fea809a62b. 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/GBCEJ1400320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab177bb2179f0924cc47a94afb30a7a87f71f911ee97ae23fd5622456783ae03. 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/GBCEJ1400326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf855fed62e2bad194521a9fb895bbcb2757bf9cfa8b37d9560cfdbcb0f8846. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GBCEJ1400307.