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 0xea326e38eb22898447892b4bc053ac354251a45d45e58d62e96c0c3973949a81. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4015ef5a-9f00-40dd-b2ef-92da0b46bee2.json and https://artists.proofprofile.net/proofs/artist/4015ef5a-9f00-40dd-b2ef-92da0b46bee2.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 0x91a7f3740d24300af4e87eae6233cccf5ee85ee9d2a8b2c7a617a041e80db179. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:14:07Z), 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/DEZC62335033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d8e1244340f27092b79a1850ffe44a11e260eac8f40b9e70715bbbcc461ea2. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:40:57Z), 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/DEZC62344526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4c6b68b76527ccb13fdb05a0cf631ba53befc8669280c6c911da097b12c220. 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/DEZC62370411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb01666a35849a5062c71d2f22fa6463993d801f189de0bd102be92e8c5bc2a. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:21:28Z), 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/DEZC62365402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94727c6c10d03475702d7d0544a528d9ebe708c50462318f8d92b528e95a7fd1. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/DEZC62406333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdea7cb65672991ccf708da9436782edef52bdc7a43a3ad7df2fba55cb517d8f. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:22:49Z), 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/DEZC62406337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb78f2135133dd138c39442a4d8d0d7a36a36e7b42ad5050bdd91c65249c7b13. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEZC62460907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302195f7db5182a6a1751883f5dd753f4dd4233fbf6243b3ea2ae19e7cd9a139. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DEZC62462932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecebe2a65a26c9097f67fe943afc26aa756a9fe1a68b0836779637a7e6856e1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEZC62462933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb78f2135133dd138c39442a4d8d0d7a36a36e7b42ad5050bdd91c65249c7b13. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEZC62460907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee03915c4e56921406101f04e03bf36bf99a2f811631598fead64d6b8c02fda3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEZC62456655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca08610e6ab875f1f0730ba68a8c3860b7e3689f7b320f5bb18e38cd4a0a09c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEZC62462936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d1e0eba37ce7af2805ffb51d2633a1fafd3020a1b97fac8a0a6bfbd2c13306. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEZC62462937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbbb783497ee6e44a4c3083d0b7be0ae6b6a1dfac71c2a1b2be3fde92544f8b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEZC62462938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf96888960c31962f17acf8f7cfbbe8de1930e13d68746377c46a6599e8b81cd. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEZC62453114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25932fa12848b1582369e3054bfb23d3f0f29dd2ee41e7b57cbc4f550d33c692. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEZC62462939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988fed59c35773f97e063ec503f3089a852d8a957f20ebd71bc801c065764acd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEZC62462940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c77f361b5f5786ce69bedd84908edf4048100deab47219352ec0e174b8fdb6. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/DEZC62462935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cdecfeeaf7cc4441feb3c13669f37ae27be6a0261b0eec5cf9d7095820f89f. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/DEZC62599239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedea119511c1d8f9f75e250f4871a01b902ba6f4e8d6a6f365ebd0b890395ae7. 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/DEZC62501584.