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 0x2a468edaec10967ab4398c2e76c18f2959f6d45906dcbc4d69953fa58d7ae1d2. 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/bb50a33e-2099-430d-95ec-6ece94306898.json and https://artists.proofprofile.net/proofs/artist/bb50a33e-2099-430d-95ec-6ece94306898.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 0xe15843313dd1fefb587200de20a05cc8672309ad9aa219b9866418b74b58b43b. 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/NL1AP1956286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b5900a4382f0a3a8443ea903b030221ef54cc38dadde2117f9180951277121. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:24:05Z), 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/NL1AP1956287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e1ed01e8896bf8fb38b7230263c7163abd27d87cd3b56795346f409d4f99c0. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/NL1AP1956288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7dd0452a78cf7b1fb1a91b99b95d1ccc46a4fb3a00b03732fecf37c233345e. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:03:23Z), 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/NL1AP1956290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56334ed4009be4c2601e40519358c61bd43f441edc26288c7a1b54d54f70ad1f. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:41:52Z), 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/NL1AP1956294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ce447d558fc4b7530d46ec788603874d15b6a1ac0fb500c81e1d253d3f28c6. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/NL1AP1956296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad989aaeeaf80b3204991b27d18fca6e7535f08d905ea8e75838a1320f1b6e7c. 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/NL1AP1956297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9ad4c1e735dd86ea881a76bd730a41f412052dbac5ea9349044eecf848cbae. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/NL1AP1982892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27b066bebd847adb3fc86eb829ee060627d31bab7dc3b0ef6d511ed8a8189a8. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/NL1AP2097492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd15277ebea3ed7be6081994496061066fee12bc6db8b0680559762afab21200. 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/NL1AP2044525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872bf849fb3115b61895c65c152a7e42c4e39c644c032f01b6090c1d32671e13. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:46:08Z), 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/DELJ82042998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e231f40380d83732bb11b1f183ef05d4ab42c1802d60cc3266f7d2206ed8613. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:41:00Z), 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/NL4NL2011199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747169b93c3989bec9d14d290cac774af99d3c3c3e251b4baa76429218875dc6. 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/DELJ82068384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872c72312b9a931e17e82cba8e995807f9c81f443b87acc6dca53d3b67045f87. 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/NL4NL2011201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd51c35cb6c9f56bbb7873094fa429c3b18b728ab110c32b60ec8e09c7f68e82. 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/NL4NL2011203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e7221899ef939ec6ea4c714eca63a94293ededd208291b4ba836aac111bb55. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/NL4NL2011204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263f98006769d38583687505f3e375d057bd5070679419e92db0e52e62948412. 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/NL4NL2011205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510aa406dfd6879153df2f96471cb3bcf84219585d608948157397b2bcf4f185. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/NL4NL2011206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9237d9573282d347d315d84baf25c6e2a0e0906ae853d82828a8ab4998a9ea2c. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/NL4NL2139118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530a5691f660526bb55c7b624387bfc539c8fe0f6a7a68939082db83a1729e9b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:37:17Z), 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/NL4NL2143129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc01f1f3bb1b723db942acb1569fefbd5b25fa7fd08c90800b0217b651b41aa. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/NL4NL2220604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574ce0934295e4300d4364b5d43d3412fc2d56f052e786601a34a9b58fe3b7f7. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:14:18Z), 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/NL4NL2220608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5055f9518d830b88cf2eb3ad7f0585826e918519ca8b8ccc96a91f35f1d03a51. 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/NL4NL2220610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094a8928ca49b8774d60377ff8a4b012cd4a66c1a56351191d6c8ca1e930b5fe. 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/NL4NL2220611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74c59585561bc160b0189b987df66ef6f4754dfdde594c093fdbce045fb480d. 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/NL4NL2220612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2ad11f28a7a43c99ccc10915c8bb37c7139e585b63bdadfb774f166a3a213a. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:37:16Z), 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/NL4NL2220613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481eb3f7ab1a97afdc9513444de2996ede59b9bd8e8a9a4246cf21000549a9b4. 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/DEZC62213989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218be7fe414ff3fbf2cc64352a0f9b821079dcdc72de980edabd181567dd9af6. 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/DEZC62321928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822a8b66cfa41d41dc21c2b5f73063bb1f3f6f4501c32c3fde37991dfdfa1c0b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEZC62375877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e3cb06a5c2bd4f74d0d45a9a83235c208ddbdccbcbabba64e4fc9cdadf7860. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEZC62382224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed319a1c44d32b419eacb4ef1f55f1884a9ea93b5f5a0c1c098dbc9d21c691b7. 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/DEZC62382225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822a8b66cfa41d41dc21c2b5f73063bb1f3f6f4501c32c3fde37991dfdfa1c0b. 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/DEZC62375877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305d59797689bea73f71e5bebf98b186cc5b5ae5e0b79ee8774d2a28a6502c7d. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:13:53Z), 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/DEZC62372809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb17f3c7492c097c1e8f4788740da7e2e41d18cef0d022eaf82b0109017a064. 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/DEZC62382226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffeebd1eab1f8662bc96bba897103a18bded8e6f5b1055773cf34a1603d8b8d6. 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/DEZC62380526.