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 0xa29636b05e97ece772c48a9b117486dc28a01d3398c356eeace51185ad7941ef. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/405a0a64-eb85-4bea-92e1-f63b6fc578bb.json and https://artists.proofprofile.net/proofs/artist/405a0a64-eb85-4bea-92e1-f63b6fc578bb.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 0x22210b293ff636e57a3243bc64877aa9491712090d7e81d492ec764be6251d93. 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/NZPB12303376.
Sons of Samoa (The Official Mixtape, Vol. 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b29ff79217b3ac2807326122a1d3a2ce659a42369933708f09e6a5ca159aed. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:51:18Z), 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/NZPB12301440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fea3a2317ed5e0ba6d93413ce961fd76cfd5c0593e61f51a0236ca881328a7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/NZPB12301441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5f42d5258673d95b0d5f7445c8310a42fefe56c27f336196d01fdb0358d96b. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:41:34Z), 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/NZPB12301443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ae311ceff519287ffe330e4582dfee4e72b6ab5df287d2d6e7a173b6f6093a. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/NZPB12301454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8570d6965e8d49696911731a273394dc16192f0149387443fadf41ac47a78b8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:17:49Z), 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/NZPB12301455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaae8451c527fb4b2538e04219d837fe9728f920e176cc4fac3290cf62487376. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NZPB12301457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24bf50dc0a6ce23173b3fa04835818f82877b2c5f83a63478dee55d22cba10f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/NZPB12400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3972eb07afeb21745fd9796e5b34f241fd601e15e50f13b1ae33576787ed9d5. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:50:20Z), 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/NZPB12401202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5343899da25cad6ce7c5454eeac327279b8c08d540419936019212cd4a5cf8. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/NZPB12404053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a5184de3f2dd3e6d9d19e88258327be10f3baec91379a42f1f6c88dd7fda6b. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/NZPB12404073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc45ace90bc8fdf80617dfea92ba0443dbe0d25ea5fcd89de9d7f9538a5d246. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:16:08Z), 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/NZPB12404075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113fcbd13717caaaec9ba275980347c6c4fcf20054075d2f56871d5923e94bd7. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/NZPB12500638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb55ac68ad60442d78846894de7ed567943aeb47212629825198f6200021ee9. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/NZPB12500617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ea08e5370086226cb232389dea349bbaacad0a2b29c4ae987a08f9f4c038c5. 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/NZPB12500618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62525c4ff90937a86b14d1171e532e5334997d54b5c82f7683832ec33d0be6c. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/NZPB12500620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1cc386a1003a4b683945b3ff6a7649fa347b9525ff7479b1aace76b43b1eaf. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/NZPB12500639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bc56457baa0dac16a11d48a47eb4a6c85aa245904e9cf2753b989e83711383. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NZPB12500622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7db356e0abc7eee9741eff3e339e4a87f913d1f64ac689849f747975692722c. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/NZPB12500623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42064dd70c0c61e72f8fcaeef1d172b934371219c37aece3658b4393b53fa564. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/NZPB12500625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3f0e3f6bb2f36b8ba45fd9acfcb101342af5413e26e8703cdb21d30fe2025d. 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/NZPB12500640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a5c07fc49eefe2dab7c69712b1f78402e2ff84e20a9219240e26936b986db1. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:04:24Z), 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/NZPB12500626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099d92b01f6a8a4161ffc3bb935bc4134024f7a9ef4079dd119e350c55b8d6b2. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:42:29Z), 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/NZPB12500628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0177f09fe4184b5ff3083e015739b1fbb2ab50d8dbff05be0077a38c658d133f. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/NZPB12500629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6cbfdaec7ec6c7b348863d8010c2a06aaf2b7e1f49e69f77d35873eec2cd21. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/NZPB12500644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fa90cdd8963cac0c04d31795ba88461a7f8c199d6d8ec937e5caffd32b689c. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/NZPB12500631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3805f5d7db4046e2e8347019247980e2818bee8bc05e523f27b84456e687cbca. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/NZPB12500634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf499f8b29f6d8dfb74236040c1b2a3ce565213a33c033414e3ef5b5241ea96f9. 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/NZPB12500635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f4fee3938d3ec828a67f1646897ff3d30c0ee1895e5de8804fa5dc6ccd1ba9. 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/NZPB12500636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaee614ce16b204f02d29c822ca18e3ba9004105e8414c757e44a207231af198. 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/NZPB12500637.