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 0x6cd7d6e13fd4852b2a353e3a0241c4f4e17f0921798853f542f75ef5dbd879bf. 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/ce504ff9-ddfd-4270-b4f7-b328c2521d4f.json and https://artists.proofprofile.net/proofs/artist/ce504ff9-ddfd-4270-b4f7-b328c2521d4f.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 0xda225ee8c2c1d85bc4632861d0b46f28f5de05b709f07e5d853633975c4a50fb. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPE871903451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09eb32f862c9b29b400bafaa45118a4043922de125335a8c89a6847a1335dc99. 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/JPE871903452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1539e2aa1f98199c25067b3675ac756bb121307f02792895688f3af91247913. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/JPE871903453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5b73a252e8ee8a50addf3ae22f86b04d97dbac7a3ca8706d85c894ff779263. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPVI01900230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb059073524f9ac0d4b5f4eae3225e01395c9ba630bd39d2f97af2d07917abe. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:50:56Z), 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/JPVI02000135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6118627653d7bf05dd231ad7e3cb1b7697ed0f1ce0979d48938558fb13d845ba. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/JPVI02000137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecbbd25bf814b082f9ae19d2505a0d2be8a7f9c0aa34b613f6b743324c138f89. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:42:05Z), 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/JPVI02000139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd49fc730f179e91f2adf8d75ce15150e4f12121c3be8bde3dd68df5a5e7daf. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:21:38Z), 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/JPE871802987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd382d4ac516db526e459f54041fb9a6b5b144b72e1f01c88846da25ab3cad0f3. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPE871802990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7cde4ba1f692aeb457c0a0e862a96198d9765f8e9c71198461dd53a53b2f07. 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/JPE871802992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873b536e4f73de739c63d0f06506dd2f58fb28c236a9614ccb7709255800e541. 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/JPE871802993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bfd88015c4faea859dc1b0116a84b48dd53fdd8fbde8b0f9b801cecd46a7d1. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:43:06Z), 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/JPVI02002142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297b481503cb1dc1ddf876c6daf186166645deab187a8de8dbdf86efe99a0ad1. 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/JPVI02100545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f22e4d39872be635612a3f26eca2b0102372f21c0e129c0604a3ae40247092f. 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/JPVI02100546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1d7c626a6f08c2ab08a61a928335cf8cc80bda16a26fbbc097d3d6e40c5460. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/JPVI02003188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf1949e7c3c8ca4bb6f33dff7e5aa2d93fddd372b4346f914393b0029abd539. 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/JPVI02101761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222493da3bbd9e310fe3e91184993b9aba6fe475bed86aae3b843b5940f4d2ca. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/JPVI02101763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18446832849c76c3f10169eafb482dee09f7f12c74f599eb2af5b139cfb08cd0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPVI02101764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c00ddb98fd032e6a64ae468275a0bce0026bbe5685e5375b54326bf0ddce4b. 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/JPVI02101767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb191554668d7837b0b659a911f24bdbab4860435cd2529dddbaef665369e661. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPVI02103465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f4e3ee29f4fc4fc1beab9374db74b00f2ee2c40d0b859708348a133cd0de76. 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/JPVI02201915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25714bc2a2379b10e1c034c217fb271b0fc003720ce9fa26f02a2d6769c8df99. 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/JPVI02202032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fb37bdada443eb2b03a8a546e7ac46ad3091c57c10c4af945aec12808629b7. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/JPVI02203198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83258af993ba166daacc1f6cffd3a1fa41ef8722a9cddc4b6a4aa5661494f2e7. 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/JPVI02203200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29ed344ba7bc552d358017f1122d606b67def92ec6a21645f2df7762f59d39b. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/JPVI02203201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f4e3ee29f4fc4fc1beab9374db74b00f2ee2c40d0b859708348a133cd0de76. 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/JPVI02201915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7647fa1201d106f205904b42740ebca38bbe8dc8d93d353026cf673e67adcb4. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:34:10Z), 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/JPVI02203202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7faf9a08998ac45ffad589a98158651d05fa0e63a69028ebc682fc91e0367956. 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/JPVI02203203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6d2976883e288f6fad5889f3574ea76987e0a6435a6db4b4fcad6ea051c08e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPVI02301470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1df3d96be7640138834baca35daa63ef2713479fe1d3f7309555d4f16198a6. 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/JPVI02303119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c2d59d3725d8c57cf8dfa9f83a98367d1d0dfc5223d846feece7d7c9c3c891. 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/JPVI02303513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa718b098b7f673ab579f42c983a1c55110aaef33e3c68aae79d93f13b6edc741. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:42:35Z), 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/JPVI02303762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1df3d96be7640138834baca35daa63ef2713479fe1d3f7309555d4f16198a6. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:01:13Z), 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/JPVI02303119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb82eb1ad0df2442acb71117820b8ac91b681cd564b75bc7d1b44942cf973b0. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/JPVI02303761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa718b098b7f673ab579f42c983a1c55110aaef33e3c68aae79d93f13b6edc741. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/JPVI02303762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43eb83511cc8193f50fe2d8aa1d4ae93016cc91bb80437aae778176e5b36b65f. 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/JPVI02303811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab458a9a8455163ee45426f0de52ec1a277a9dc8f609d0848f26225819b7d33. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:33:39Z), 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/JPVI02303812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9289a1f8669038ed9f1400546dfbad7b8c0112c85f5bb3dc7103f63ecda04d92. 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/JPVI02303813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3040cd490b4146605c528dbef68dda27b9a46f1ea67a6573cdf3a916bd4079. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/JPVI02305091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd12b9bf9c8bb67ccc83d08218c8b2fc6ea1f5f78307976fa3a12bea04340c35. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:13:40Z), 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/JPVI02401008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedefad791ce944a05f94ebc7d55bc6a4c24c581231a2f4f7ab023338d8aaf794. 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/JPVI02402494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48615919dde569db9d03241f523d310bee27b515b64ec649ed58d0f0a51b29d7. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:20:25Z), 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/JPVI02403514.