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 0xae5ddf050218a46e393b15d817aa4662998b7ce556bc5e630181141e286baf4c. 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/0f58da91-1ba5-47e5-978f-3f6c94f6918c.json and https://artists.proofprofile.net/proofs/artist/0f58da91-1ba5-47e5-978f-3f6c94f6918c.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 0xab60950b4b1a25c25b5ebf26fcf334ec91001262977da0ee2aa61d1853c5189a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAJB2422658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40584fb0d0fb5a54478a74797e1c73193f65bfd0da8dd607c34ae81a0a9cfe4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAJB2420379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe0d9623904d5f3a5422c663175962e45fef515e5e5f13413fa3c9b04f677c6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:28:12Z), 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/TCAJC2422484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4805a42c1121f5913825617aac07309b9c81ea073bd4b4d26327d8f6bee3a9c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCAJB2452073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc677523baeaa9d7b06535198b963038c2d5c1ffe2b3e3f8e7fe07b7eaa7f5da4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAJB2451824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e944a2be1ed2e67d6822c6d8c2620bb1cdc822b82558039f16499fd8537516. 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/TCAJB2451660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac787ec2d1fcd41c68fded8a858586d52cb5b291e18da33680c594a9a3af3e61. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAJB2451769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce82d914f76de5e0cfdac38ce48f09fa449fb12e634907cf2ef6da8dafb28845. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:28:33Z), 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/TCAJC2452122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2600aac27a491668b04bd37fae9431c64089fbc73610575665f91c3f9a0edd4d. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T16:02:10Z), 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/TCAJC2488725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bedb5aeb004a1451776127184eb07dde6a21e0bac2fc62936e2d3ef1fecffce. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAJB2488663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e4c1392db6fcd8767e157b61ddf5d35f0aa56da7db38e210b23ff9f721a298. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAJB2488710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa4fc4b36e4f3136b9fb3133df8460d271e1aea72da33a92f66c6456af0623d. 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/TCAJB2487005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f04023e8e8aae07aa759b95944b56ad83a63c1f0c54ffd648444d251f8f587. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:58:21Z), 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/TCAJB2487023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fce40e42764b5a7032b4eff3130fbbf9738bd2d56266409fd08b033a06a37e. 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/TCAJB2487113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7060db95e4557df6a0ce3b0e642719951f9e9d61b60fc06625e68446b82c550. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/TCAJB2486979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8c711bc6030340a350ef70608f02dace43687fca0be08e38cc54705e776f87. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:38:11Z), 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/TCAJC2443764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1964b84109b17b5a8e3674a9d9ccfcec9ab731a43d8e7b3148a7537a12fdaf. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/TCAJC2443652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469e5fc6984e573a67acf6f90f3e246fde853ccb455b2aa29a65349a7e2192eb. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:00:45Z), 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/TCAJD2443726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea69d329e4a8bdc3fec47e515874d50e656c1364bb271e09509f58dfa9feab53. 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/TCAJC2443706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947af22e96b71b14175d6b5f15c90484684517e62a686b8b5e32425d75beba9d. 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/TCAJC2442382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa538b7dd9d7d44af983c63f84b3871a7ef2ba866d2d84efef83ce7b2ebd077. 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/TCAJC2464926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb585e6335cf81efec94f68bdd1aec0ecc506eaf7b3a7314770d1e9e0416f3291. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAJC2464957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fc9d3278926849ef16bf70d5140003f2533df217f6b7f02b1ac376b202f7c5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAJC2464984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1550ea9dd62749b2ec9b73711ad6751b034953baa5ab6ee5de62aee214b22d1d. 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/TCAJC2464791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f143441be437011ef90754256e7c8688b84baac6b754ca9ccd2963c2184a76. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:58:15Z), 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/TCAJD2464861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b309a5eb3423b50c15cc1697f925316bce12e615ccb50750b06f229aca5558. 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/TCAJD2441242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83294199292c5f66eb8f1a0019c41e882682dd53ba62e5065a02b8d77a835b80. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/TCAJE2441274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacedc09d511b053424e1ac74f5fe43532ff8f65d8265512c2f405b3e93a20db8. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:34:36Z), 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/TCAJE2524130.