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 0xbe8053b70906cb0f1753dd3d2cd5f1218d6fe1b7ea2d21bf974d5d6d26f80c14. 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/8f9cb2f3-e437-4966-abdf-9bfa82ac989a.json and https://artists.proofprofile.net/proofs/artist/8f9cb2f3-e437-4966-abdf-9bfa82ac989a.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 0x69d0f92841f1ee87a2e67c7fc4efef31e8d0541c3e4717d88dc48b92b4a1252e. 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/QZHZ52151169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d236e9fa975495ed52f025c757748d65a8519ba1699c974a9ad8c39861100d2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHZ42157868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095ddb6e24f81aad797f43d811bd4e4c46d575b29c51746a2847325ddf771a9f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHZ42157867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e18a6f6517b7cd032aff5c2fdd2016fcabda964cdb10c4c049a605771e6b9f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHZ42157869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c7812ccf5c9521af71b82704c1bf6b467d241b693df7605e68f9e1c0ed5f7f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM4TW2402616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09092b2aff339762fb9c37a389bdb4c1860f27d9f49ed66ca8b3da37cec0a8fb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6N22157691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0335199f4fb35f3ec4b836a2b90352bb37b837ee07884725019fe20bd86738e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZW9K2253960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0c527b60fff82997b73a8904b9f0f97e53a3c85a4128582d7a10d2b879e913. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHZ62213512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47558bd838460e3a2d63ec59859b7872bed56df89eec6dc182d81ae10640ac6. 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/QZW9K2253962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b734277a17db38dee2d264deed7088fcc25fb5b24c2c3d2b842865f7fd8584. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZW9K2253963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c5b5809e5537c7876c85b32f167f7ca018d0de7ea389a723c3ed3756c1705f. 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/QM4TW2550923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670d61149443253647648e5a66cae7c9ae246898e13d6f585f2edd16c012638f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM4TW2550933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750770c64db754a7dadc2c762b52182df6f4172f95c7701a6a337f062c61c7ee. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM4TW2550935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760cac366f9f553dabc8e069b566f960afd8b0826b0384816b84c9597856b90b. 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/QM4TW2550942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c7812ccf5c9521af71b82704c1bf6b467d241b693df7605e68f9e1c0ed5f7f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM4TW2402616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd38c0a840c952f36d360a597c5ce023996f4cdd378aa36c8c789ab5ba37ab4e. 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/QM4TW2550958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a92549077b1ec822eb210821a5affe9b5064d892336c3da156d78e7f27fbba. 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/QM4TW2550960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bf8c661d54a73584fae0c73ad166a6c4b16204eb5f008946329c0ebdae9d16. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QM4TW2550941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4176d674caf413cf47bd211d459bb488e1c950f890bca9697fdfdde1c8c34b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM4TW2184249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398054f1f3be52cbbbf88ae1cfe680b5991e8cc9a27b3ba1a49f273eaf2d848c. 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/QM6P42482529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70354a3213db4f40ee597171926de82bf0b5d37c35392470a29d342647a64056. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM6P42460844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c964677e9f6b5573877bfc8699f5f53878dfbbfc83e9159e0386091d5efbac. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNJW2353755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83456e875d249acda49638be5d045aeeb6a41110316ab24b24a011993a54d940. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZ5AB2239424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f4d08dbba0f1a34ae5daefe0874043b85c89b96de83af827658c65d456f932. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNJX2101543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e78aefd29f5ee8c6ed345ec565cfd06a90781fa3ac50a8718cbebfedd9946bd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZ5AB2239426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f4d08dbba0f1a34ae5daefe0874043b85c89b96de83af827658c65d456f932. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNJX2101543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981ae7e21cfc942160afd80f84909a5d8cdc2e78f8f1129c48e4c67494c4ba59. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNJV2044486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718c4513639b53940245f72b00c4fb2de9f528fa8e401b85aadb8eeba1ff47d7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTPX2381234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56275ffad654c08437b8f717cea84ca7660012685d29382339b5fc7847341e69. 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/USCGH1871364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673bd0b8411e8feacb63d4381497ec2bf1f8c40c3d2bfb102cf8113d4730890e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM22120149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae250ad387cb76868ea1514ca423b9ec289d210494efb1d9c0f4c30093e7ab45. 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/USCGJ1832476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5982ca01f73c40b145daefc70505800f66cb6732c09a272f9cb5607294f075. 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/ES71G2403843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4bbc7172745321389bb6433b54aa5fc069960a431ab18c562b7dd5e2013897. 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/QZNJY2155882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87b2ea9cc7eb12878b5d21d1fa97534073debe275c58661a8fbdf105938c534. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZGLS2286994.