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 0xb71463e6b1ffe2f8d47a1f3e1aa5a31f3579e8fa86a29bf4915074b13f112f0d. 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/63a3c17f-2b98-4415-a729-200109f420e1.json and https://artists.proofprofile.net/proofs/artist/63a3c17f-2b98-4415-a729-200109f420e1.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 0x3c1a886dc1ee326d83b447debae444df7b9428f34423c89f57532a34761a9181. 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/GBLFP2332952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a263ebe1b8ca1d7d3c77a1e77ce8a8a023885f50af2aa5df8d42a5ab791c68a. 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/GBMA22336466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3716e1a83d8f80d0060d5d4defc57f850c77c6771a9aeb46a3f5e21b3c0c1ce9. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:39:13Z), 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/GBMA22368167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66cc9f790b7bb3a07f3074b6ffc2bd91298a5572fcadd612a02c8ff12274928. 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/GBMA22382051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce2b5dfd27e7522b2a62f1029453fb1b20d8d5cd227724532db05a5b19809df. 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/UKXN22364924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40352295d361bbaf0024b19090df0eb8d1838a3d896c6751d0643cd4fe2b133e. 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/UKXN22441925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc683360f1f481937f135bc65502482d53507b20a73adb6c2f71cf771e97dc7a8. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DGA0L2309803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0052a73eb245baa0429877ce79ed1caa353398b264478882ec6301ae4f637e7e. 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/GX53U2481116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7c77112c30a08a23030db44efeb968cef76972de1ae04793e38d7e646a32f0. 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/GX53U2437229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1a2b58a3d4c2777e93cd702bc68bb70c5f793c3c1d1892af2c3a0aae415508. 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/UKXN22500072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d74c2be746f0a28475c310b5bf03ace6401bcaf96e20110d0393bf885374c4. 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/GXF9Q2597945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ec056f8b5066c87a48902c0515e8c778760b85f305563c4b045162a69e6d48. 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/GX3Q92554264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d6ec22e2c7cbf9f4d1f5da803fe04f02f4da7bced55e0109828002a853ac64. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GBMA22596618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ac84fddf683133ced0d1185e576ffb11eabe825123c1b54c5df93ad361b507. 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/GX53U2573106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0953714e4df8bf8c1afe997acafc4d9be23edbe504e0ed3e679dec74378bcfa. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/GXHG92567025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b4dc4d2deae9ebd00e6a68f039773667deaa4280ac0a7efea3b847f195b235. 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/GXHG92589526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc743592a4a346b33a876155a33667dd1411567942619e9e78932e7f5505e482e. 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/GXHND2558925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1700feade1cadbda232b80dd2edf4695d24af3e98f5531bcde3090a8a94fabb. 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/GX53U2676929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17903c655d33ee1753975e2063637410d3c44b98a6f8b6518381e504bffa778. 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/GXHUT2573202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d9d2fddf4341748fc65436b8769e13c5d5373d8a114cc90a5a88ef1e188574. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTB62302386.