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 0x21e2b25da8862c3203d88f0fabe6b5a2cf321fa0fdbf45b92ca4d37a24a2850b. 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/20370e5e-db08-49ce-8966-955faa360056.json and https://artists.proofprofile.net/proofs/artist/20370e5e-db08-49ce-8966-955faa360056.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 0x2405425abaa5e9884b1a479797c292a8a8bf3a1668c471a9cfb3ff48be12bae8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN62030329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5431b2efc89ec5cecf1f564eea2b11c86ea61a3e1e162d98ceaaa80054e7b3df. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR2X42104551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d9b9ab179f40907c77ce929fdfda1445fcc01358fa0a3e7f4a654e2df76071. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FRX202113591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200c497003197793ae9da3839c08b6df2bb1071920884ecf443cd3659129ff14. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/FRS182133037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283139127cf2b5cbd6003a4c41d2c11bf0ff6932c236c736e3b16c516942eea8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX282226613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee56e9de81e3d987a4fff6984db4e54eb1b20570fefbee426a3b3de3659b9d6. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/FRX452209382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adad9d0d470779a2933f41e26c4454129104b53f03ef3f8d072af4f8bbe915e. 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/FR10S2341308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9262c2bfb927980a394cda694d176829117cf49b78320d71d732f603a3fd506. 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/FRX452305758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e15d5e0cce7f2d51bb5d83baa809875fef00af39b4f08c8da6db16723c5e4c. 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/FRX762315739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d62e81daa9999a3773919b5a594a23fdc5e7e74dd15336c2e027c2d845f696. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX872396204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd67306c6f51ff4f6ad9c6864127f7666dfb164c6f545c6a72f034a6ca8525e6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FRX872396205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56145d83f44e813df43c8821247afdcfa631c720970fa408d8554b210470936. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR10S2341309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e896e93ec9e76a42d30b53bd06644eab818ef9b7027ddb175f92d88517c153. 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/FRX872396207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5023a9fff9bab0ff9eb9b687cdc3ec585737a9a92addc66e37559a87cafae16a. 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/FR96X2358340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7ff9e5fa8026f45f43cca58fce0c8b2945dcdf6eaa05c6ca343816c3d635cd. 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/FRX872396209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde358fa8c05577b0844f141ff771edaecc22a331c91e1693c7725ee23a8a8b8. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:07:36Z), 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/DGA062332633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c0b12ec83581707a1b9076dd9b0062a234687b481e24585f1351bf8c37ff52. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA062370200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b52cd577185103fcda20df2d3233ec96aadf71028db5926421dcf695ac3294. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA0M2316385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616fd7ad6355cd3e9175e8cba2f31a01e8a570a08ec7ac60c3e59f4c85504bdc. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/DGA0L2357731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7382f0c87410590b54a3344fcdf8b7d68c72eaceda1afcad9d58189631c228. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/DGA0L2357732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a9b7b4c1af4ee594641ac3b2938039f8201601466c5d6bcf65d8fa6d520f40. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:47:35Z), 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/DGA0Q2381653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee9a3619cf40caf11c75237d4de85a9c1e21917078b7d4edd3019e9b80acb6b. 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/FR10S2462692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f1e40ed9dac8c0e77d4fa85de1c8fc61e4021b2a905d5d38bc4bc5ff9bce8b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:15:26Z), 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/FR2X42442332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188547508db2ffa0711a71908ef9f4e297fc424dd14d3197013cb0c2b0f18855. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:04:54Z), 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/DGA0L2411923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106a1e475177551184253a5ec65a2312413a7aa8b3008dac75c1bc855caed690. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:51:01Z), 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/DGA0P2453598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2348abbba430934aa03edb2af0b914b49bc80bb8cd17ce2bccd388c01d747eb. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/FRX872589640.