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 0x53c4963fe77fb54640de4b4a16913857846139247b89d99eb8b3af955d9e9ac2. 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/25dd905a-4dce-4955-a866-2261ed049054.json and https://artists.proofprofile.net/proofs/artist/25dd905a-4dce-4955-a866-2261ed049054.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 0x3b8d9d36eb28b549f7432c1a58d43b6a1f285b2c15a57340f0153d1accd00400. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:56:01Z), 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/DEBL60840144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6da0de78ab081e3bcfcab9bdef0398f45148930b3062c5107659d8ba637ded. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:05:21Z), 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/FR2X41621819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa52285fc845a04e24247278600d9e88a2f2fd7430193975de319bd6ca66632. 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/ITH471711001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8e168d0b89806efda2150bb5dbab59692cad0aba9ac769c02bc6bc916abe4c. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ITH471711006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a2d7b1d6084c508a43f3862759f873872eaf48270361e0526c30b32e0698e6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:01:37Z), 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/ITH471711007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ec3a6c130a78d943f1bd39f6ad886f528a69d3ad8b66ac7d64e2d41e4c8afa. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ITH471903005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfccfb9c577fc40ad40e3afc385e22ea60685a541efb55fa38a69731433c25c. 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/ITH471903009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524216fe4925a94e754cab50fc6b965678d546cd3b4c1d12a0dc7fac13b8d600. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:26:46Z), 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/ITR631900213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33522c822708485c2575331d925962180d885abbc52d97eb748a27f0e8e243c0. 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/ITR632000498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0a27f8cad45606447c1a850c4cbd579164dea15425635469b3b67bffef2aef. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/ITR632100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5183218048fe03509842e74379c82ac8dcaacdf6085be76693f8d9be6bdf0ab. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/ITR632100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe37772ef4638bc135c735c7fcd74f68e9d96d5e1f30fcbfc88727144c7071f. 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/ITR632100063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f469afa5b8521b11d86cf3196807a0878fd510c10320b05772948d8d9fb26a1. 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/ITR632100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffe7d7bc22177378be257a8b81ebc8959c3cab656b180686b660c8cf8a71dff. 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/ITR632100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8185d7184546965460e0d74e79ff820588d384096b94314b49085debfa15af4c. 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/ITR632100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe226433b5eb5232a4d4e2145bbdcd899ceb6547981b54affa7dc9af14628e163. 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/ITR632100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33522c822708485c2575331d925962180d885abbc52d97eb748a27f0e8e243c0. 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/ITR632000498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4dc9dce77629dce043a13eebb755771d2d0575f6126b584e9e9ae2e0a94db3. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:04:51Z), 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/ITR632200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a77a7af78b800b70e7eae1e19aa3e1d37815c556286c0c682fc56b09e78d3b. 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/ITR632200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4cd2d406570c8a10f3ae371b7ba414c3c365fb36297a1ee17d7f568645ea853. 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/ITR632200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb747ab50afa2a8f864ce0b940648bc622c7ad6f70aedab9e97ad9f6c7d9b88b. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/ITR632200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217537fa59b26dd28bf17b37d040f49b7bd4dee6309fb019f04fc4c5bf2647e2. 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/ITR632100747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1a4b3285b4ce36be97571bca8c23fa9e9540b3e7344c75436e44c7818a27ef. 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/ITR632200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9560374cadbc51df4493fab91ff6c6865aa1b5e0961ef45811a30573e8fc9976. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/ITR632200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96cc83d5c02e6a959a1f72c50fa950d6f7e2ae75404484dedaf270c2b89e0c1. 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/ITVKL2300097.