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 0xd88f2c3bed8bafc11ed38efa993d1e082ba8ddb94d09cd8423c1d842f7b9ae1b. 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/ed9a8001-937c-4c0f-8d58-7434f4b0105c.json and https://artists.proofprofile.net/proofs/artist/ed9a8001-937c-4c0f-8d58-7434f4b0105c.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 0xc6dc5ab0afc3ada8f0c0989f5708241b542dd80153e32a9ca8a36431b305d50f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZK6F2386346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041592be47843e97533634a2f933cbbef96a2f88e1db661f6a3cc8a0f008b0a6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZK6F2384275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e3639acabf355fe96de5843dd360ba3a72009098982756fa182b845ee7d5ba. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA5KR2359800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1fad7bfdff62b72bcb9039a691969ddb5a99faffae183d486c61012bb7c53c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA5KR2359799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25391b9f11dadf0d3eebfd98efde5b14d5e0449bf560e4bf50a2e50f941a354d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2359798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af322733975f45789bdabc21e66ca542b1d982f5a393b45784935432f94975a. 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/QM7282378301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda139629b366b28e3cf0561ccb9482b2ee91176808f63283a4394d3aa4acac10. 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/UKZGC2305627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58fb728fad0fa2dababf5badddb6bc6ebddfdfda85cdad595ef2958dfb8f653. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:54:09Z), 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/UKZGC2307425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b32b602b6ce42bcb3290c4c355480f3471bb1cc85f8bb504a8d8481ad4f720a. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/UKZGC2307346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae85f60042d67fcc51b59f9a2f43cec431c22e0e69bb681087467d3e0e3710b. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/UKZGC2308075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085e57535156246670b4a661987b02c2b13ab85e497b8bab2171a20806a90f96. 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/CA5KR2398312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1086c64df94a5c28c3f6a673fca32d083cda9032965988bcbf09aa560d67b60. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:41:30Z), 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/GBKQU2404199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8d9eb53c0e55535a9d1ddfd8c1782f4b3703deeb6cc83334c6ec9785a10a0f. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/UKZGC2400189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a461c9290caf943b7dda07f594de03bd4b9c095985b50e1140f09e81ccffab. 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/UKZGC2400555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadfa16e625a432ad97bcb0646dc4a4372f1a1ba4a8eedbb361be4c177d08042. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:35Z), 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/GBKQU2405199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1d9e1b804f55e0b4f1935f9c462dd115afad8a726810a95bd1eafb48a73aad. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/CA5KR2431348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803745a4582d1cab20a2aa0164b7f1941e8a9a4dca8c179ce5f72177120aa922. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:12:34Z), 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/UKZGC2401229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5388298b909e75633dd1a2c722f5bc65ede6f102b0818e0e265b0843e2f7563c. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:22:34Z), 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/UKZGC2402269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e4c0ffeb9f523f243f4f9a56cd42a0c83f5d89987cf6d913f473649148b19f. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/UKZGC2403324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0afd0a97a2d6b045d0b0f3b12d0054d03993d062835a5a24d89f4931f01b27. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/CA5KR2459168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba84836b8d6e0272d53725e884aeac452f79e4737a06d26995d349f778b96e8. 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/CA5KR2459169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0798c91fb12e844e703aaede63e544210a0c376e6df0b2e16240a109dfc9a1e. 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/UKZGC2404586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0f0c80b4e7796b4581d5106020f755779154e704e83a46b249bf1d79e43c73. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/UKZGC2404587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6d5173d08dac3dfd2ee4a7902b6690c17c56351e765fe51003b4533f2dc95f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/CA5KR2461422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e75f5f6b061b6117779e904636c17a8cd9bc9c954766d3d08bd438b894db47. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:26:47Z), 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/CA5KR2461423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f328d09f779652ae8891d71550cff1f71029d9356d892eb257f999751fb1957. 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/CA5KR2470085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc8975bae8f47a331074340b1aa85a6d037306c033e91fb88d8ad58de0f8ad8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/UKZGC2405980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87dda23f82cf0910f943d3dd7d9e71313b5644065643b8a1565aa9eb3214e48d. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/UKZGC2406473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd518ca5d20950db9ae68b6d7e4827e3c7749475de069be4b59e8e7cec1d7d874. 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/UKZGC2406474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559dd9b556cf7a892def355e622c7eed45d7e0c9c285226b013ecabb6c7b1158. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/UKZGC2406369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff47643f7cac111e4cf45c31c2771cc6c64674bdffa2fd714174ecbd7766584. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:04:30Z), 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/UKZGC2406371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7a88bffc8ca14adb54dac24be49222e6c3d3b42f65f60431c1e4f4f666a7b4. 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/UKZGC2408111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f305065cba3f4b1dc5b465b7690f47e299eb80d013e6aec5475aaf5598ed23c. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USANG2452278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bf8264e91dc5e79b010f6bbaaf530aa6848c4e94cc668cf8c7220996b02033. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/USANG2452280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd8caf11dd3872c36bc70f2c4b99ef410b616ebf0b97bbeff3eb2684ff78523. 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/USANG2466108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944d7eed1149606e1fcea0a67b58a3c797b379b676a9c88b92b49558703ada39. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:00:37Z), 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/USANG2457776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80993771fbc567dab5866c70cde4e8865651e13eed765e0cfabc297287ca8ed. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:35:38Z), 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/QM3DF2418249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd716082e94a41127d32f2517dd40c9089047b730e7f07362a62a0e47b56ab9. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:20:35Z), 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/QM3DF2418250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28769e2e2dc7ac822e59ebc69eb75cab269fbe307ba2cfc2614cb513a7c1fe5b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2398926.