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 0x27debd72c6d5f69d19e1b043662c846beb62cc0ab7fc91cf9fc6387138a2752a. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82e1f957-70f2-4ee1-9257-b934a49d0b98.json and https://artists.proofprofile.net/proofs/artist/82e1f957-70f2-4ee1-9257-b934a49d0b98.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 0x9d70f0feb1b6b19cff27ed9be44bb70cdc446bbe9875058f8807f2488eb98df4. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCAIZ2406165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5409883089577cb3a545e34be2c6c847242ccd3f0c204a1d658b5fe880540c. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/TCAIZ2406225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fba5585d50d3c643f708a5a5b0e1c1c619f977076f008b45bc3a38098a5bd0d. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:07:57Z), 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/TCAIZ2406207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6ec2daf0bf1ed924678c236ec3224f3771e951ea9d2d11aeca7dd3d34d5cf2. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:40:43Z), 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/TCAIZ2406238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8f9f045bd158d340b688e4adf48856567e363337c77919e1e2227b0dc027f2. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/TCAIZ2406188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002cad278578b09ddfb1e3714ee03265c1fef9605abe96e9065c1d79256fec0b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAIZ2409993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1fc71bc49123cea4753198e781ad65083ef7dec44be2741e7e188e4d824ae0. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAIZ2421391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4158215a446ff36e89864b1e91f7d9bf747aea248a44304c75427df8cd9686. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/TCAIZ2410033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d5bafb6df58cfb3611858e479300c1cffcc032e6c6251f5171c51b5b3517cc. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/TCAIZ2431851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b1e5e6986a56f0e5df63bc22c47a9bd66eb4cf67419828208ddac200c7dfa9. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:38:44Z), 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/TCAIZ2431917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8211bf97cfb71cf2a90c1aff7e819b9ce15ad9e324d896ba38a5689601166a. 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/TCAIZ2454757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57791cc4475b2faaa604afd54c733fc6d1a89d6e1287335d1bcaa0970cc8591d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAIZ2454819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c521a050b96ee2bca9a28663e9f9ee4f412dd3df597b70d9c85039f3ef81427. 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/TCAIZ2454780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7fa66fdc83f9ea85739707335cc6bd3c4acc420792b5c5648a3c49fc215dd2. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/TCAIZ2499388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cd772bbd58a8d5c5d8a547b8478d2dfb4d96293aac644578a2c934ee4bcb43. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:55:53Z), 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/TCAIZ2499450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea65f02d162f79db2b2681919bb7ee111194f3715c0b1e5cc1af6417b3d8271. 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/TCAIZ2499377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacbaadf75e300ad3b3ec3ff54a9c0c682d3d276526207cd3b11c2ed87fc8212. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:18:53Z), 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/TCAJA2435926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f45ef81814fd67af141927ba3e33e1e63f815a7faed9faf408097f332bd04fe. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/TCAJB2435943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeff4adb1ca7c0233a69db723e2353a702020286dbd0eeb56b0973919396f749. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAJA2479088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc56fa22ce85adb6e6b3f50c6513d3028de7ceb198cdc2a9acd342bb7949035. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:51:51Z), 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/TCAJA2489122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b863be4201cedcf4fc353675e32e51a78d01bc029ae1c64b3dfe020298d3719. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCAJA2495769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20c46158372f3dd78348fae90ca4a43111eed4cd5d58fc7c5f5d405cf178d97. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:50:59Z), 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/TCAJA2495682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d2ccd9698f08d8c94a9ba065cda7f843a2a1dea4661de2e442fdafb1e5cbb1. 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/TCAJB2495807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc77d30bc4ceca8ded2a760d081426915a376b42666a8f0f992e9e40a57df26. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:05:34Z), 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/TCAJB2444925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbcee636005203afec5a131402827324482a608ba7c265eba8e2ac248c752c3. 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/TCAJB2445040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27612e8beb3d963283115d91bed034fb789f3a73bce45ab44cdee6c8c7cecec. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/TCAJB2454505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf640bee631698abf0cf8c976e3573eb04cbf7c655a577239b5d5320bba257cf. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAJB2454383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379f55503e28545b02e2dcd74a200a76a3758d13cc00b659ed890243b30167d6. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:24:52Z), 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/TCAJC2446471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61d49bde8523094b8d7a47bc96fdbafdaa8375556b9a7580900cef1c7e4db31. 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/TCAJC2446395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb397951255649ce03f2ebfdbedeeb24682c4c02b0b66dd6f4f7b5768b47bff60. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCAJH2564577.