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 0x0dd35c4e8c9204d8f79a03120aea674609ad28623b15745379db41e9ba499e17. 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/9856781d-7dc1-4232-b1be-d993041de793.json and https://artists.proofprofile.net/proofs/artist/9856781d-7dc1-4232-b1be-d993041de793.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 0x70f04eaf32b30b4c78aec53aa2615f8d2e4040ca7fa470bc55c9eab99f05cf96. 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/PHI010903461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a11c35d0cdbffa95632322154cd0ccb2c55af9fd6bc0c015dd8685a17060a78. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/PHI010903462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151fc25b1f20b86c6096d996a8002ce3e15d81718f22b240fde52581cdc107ac. 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/PHI010903466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca36ed0ef3ffbc44668e0c5ef2db175a8b79a9ab3ecb448b833ca1212adeea9. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/PHI010903469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967e953c0b5bb5a41f1b04867e12a2b5e3df9d93f382e41f925bb024e316fb7f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/PHI010903526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754c6b8efcd230b946391fd3789592c46eea5cbdd7c64ac01e7a53f82feae7a5. 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/PHI011203922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc53f0dd0820846dd0b89b455209952ddfa9503348c0f47360d09b5000ee122. 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/PHI011203924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45011ba7e45820047541a44fa16444b05e593e1ed2b3d7b7715c974e4d9c74a1. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/PHI011203926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027f99b13842f05fa3fe1fdf6c5fe23e549b94ba60e9da540a2cc4ec54ddce6b. 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/PHI011203927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef04932dbbf5c5543a0175b9b535266e206d6ab19af3db7eb01469e4afe3586. 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/PHI011203933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac51fa805f7333ab531bf202a1fb82b3dd7ccbd5f396c606523c63c6b8ce52c7. 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/PHUM71800111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a8356a35a8147fb18983978b46c874a0974d019c4b3753ed5f0ab618ae324f. 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/PHUM71800060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2feb9533469653a7123c14555ce632a00c1fa3f8084e9c3a72b38d5f1217d048. 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/PHUM71800061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3875134c9b9e9c3b13fdd505070f04a24a7b214f6514c0485f33fc96263563. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:37:55Z), 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/PHUM71800087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bade2aa4aeca564db1a8e69b32ad2772119cab110eefe58bce2f92778bd41b. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/PHUM71800112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bc49bf0c08c3a290513898cd07c0052d98eda5a56f82d35ed38097a6ef29f5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:54:36Z), 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/PHUM71800090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2581babc018a9b7ff70c059a2a90f97de553cda0a371a4a0e1f2c4c06bfa0c. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/PHUM71800064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f3858cbe8ddc72a3481bd68b5c71ec2b59ac0570f96671547dee5513f53301. 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/PHUM71800065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55901ba08656866bb79f1bd7d5823027fe4978264b2c4cd0b0058fc7cbbe20b. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/PHUM71800092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8ecefb6bde6dc21f13c418baa814fe5c9365c44746328b400eea5ae9065f8d. 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/PHUM71800094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712ce8346176c6066add5b1040b56071128fd28563ada162c4223730691da267. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/PHUM71800098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf05784b53eb693cb4a040e32bfc324ed3e3367ad40096772b733e8129f205d. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:02:36Z), 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/PHUM71800099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6258c2ed69285bfdda132513fe083ee2ef5ceb7d8740a59cf79d5231c9615b2c. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/PHUM71800069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1757182f099bad45b89537a8921c37240e17d18e0fee4a9ab2bc4d4be0f11123. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/PHUM71800102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b122ec49e8124b6304afdeaaa095a1a4391bf5c8af372ceb9a65918ac86363. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:23:01Z), 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/PHUM71800103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627534cadfa7c5b963e238ad4c596f7520ca3e80cc1deeffe562b33b25faf862. 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/PHUM71800105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd9fdc1881bf326006bb57057e55ed449074bbcf8b4e97ca2606a7998ec6fa8. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/HKG292300666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396012a45fc3d149e94803c0b944f21872ae8b9436a0fabb74567ef9a010cf77. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:07:35Z), 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/HKG292500073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7acb3aeec7daba38732a13ec3bd3c069122ad6183958dacea45fda499b95b581. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/HKG292500164.