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 0xa58ea9e1c3e567b4430af5a7d1ba3b4f586a2398312354ea428798be62640fb6. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa9425bf-80d2-4cb1-b5bb-545038917e73.json and https://artists.proofprofile.net/proofs/artist/fa9425bf-80d2-4cb1-b5bb-545038917e73.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 0x290797f5374c53ae1f9ec41e14e604e30eecdca5c0d83d83fb328748891fd75f. 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/CNE240243701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44e8d1ecd1ca08fe148ce8672e29972f0fda9f27f6c26ee45789ab8e5f74e92. 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/CNE240243703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9579bc023a5ffcd070f67ebd15067ab328fcef915983bb342916072578d2dba6. 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/CNE240243704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd07a71044a96aee290879a3dd0b987c84a3365011ee7aed0ce2f6795f42fd0d. 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/CNE240243708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0f2d4dbee9854585c439d23e988b8e40d2524b6d0f264eb1e408da40299053. 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/TWB870106603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85738eba9d4229ec9c771e0c0cbe5073392277c63150dff68810536e742c7f2b. 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/TWB870106605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9db3a5d87c9842908ee75291e48a85399e7975666f86e1f916fe3286b414d9. 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/TWB870106606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21890480fd7b4ab5d16c16e97ed1906fccd0bcf9965b7554ed48b4966113af6f. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/TWB870106607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d7e43a175304832e998614ebb575d7b41e73fe619f1395bfc15553442814e2. 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/TWB879601602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecf03f0acfb1ab0d7db0b546b83110844a4bdb52823fdb1edb2681419f4c568. 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/TWB879601606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ebed254da8b8f3b5f5f6b40af1cd23af92753fd5b1c2c057d65b4a1b9b66ec. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TWB879601607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf38cf45134a827dc9e64f57cccaf2555b6555b105e0014aebdaeb96cc5bdae. 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/TWB879601610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea7cc014789e77c9cbf2e9f1c5eb99b913edc9af57ebd44ad3bf3a99760d878. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TWB879601611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801a357b0a9680bc8dcf4244a1785477dedfad1204819a4345853bfe6208ecf5. 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/TWA450003102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ed3c775617a1430ddb4dbc0af131125138cc058821466714ace05c0614479d. 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/TWB879231306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cc23e80e0baa1f10ad3f547fbdc92e8a72cee9ce161157eab9e20663a83441. 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/TWB879230311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60f1b687f766c1e3ea1c739373c3ac97a3dd5d22eef7ac273281da69d2b10a2. 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/TWB878500104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc836461852f2fc6bb264dc016e7b809d5d298995517237333791f9c6469239eb. 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/TWB879907309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc836461852f2fc6bb264dc016e7b809d5d298995517237333791f9c6469239eb. 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/TWB879907309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ac4e30aa3da1dd95d26943ca1c0532b42d2a79b949d734fcb6f9315cccaaa4. 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/TWA459652004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6dec7c0a4ff2d1f70216241944962ab480315ae0ec8617deaaffbe759296016. 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/TWB879907314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc836461852f2fc6bb264dc016e7b809d5d298995517237333791f9c6469239eb. 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/TWB879907309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe988de0c635ab0d541df5b370204b82b373a504250e6de43aae4942758676491. 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/TWB879230301.