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 0x61eaec3fbadfb25d5fef8fe8d3ed41c21994b471e8b15b5b85b4c31b8560e0dd. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5731a44f-8094-412e-a4d3-24674c1a44c9.json and https://artists.proofprofile.net/proofs/artist/5731a44f-8094-412e-a4d3-24674c1a44c9.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 0x2c29934f17432c2e7426cd92a66aff71181bb16ecb7588da232707309a3067c9. 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/JPCR07500550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5957efcae1ae52df31fe9f1f4b56cfec5b4cba19ad0b24c74b9518bcf98d39b. 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/JPCR07500560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f6f19d84d21fdc9626a4d70d4e4adb55ccc17a9223b9cb8993ff93877a5a13. 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/JPCR07800660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6815837b91ec70b62d8c833c6d4c26517955a998e0512dc4d2319c9d9b52df. 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/JPPC08802990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23847b2422f0caf9f1f652a86fb851c5948ff839df514260a6212ef5f5c9169. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/JPPC08803020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62006964ab5c96dec5ffb6d458624ef29680ebd720e78de64ce93a5d8764be0. 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/JPPC08803050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923dac1de3c9e47107420e59374a6adb4222d4f6ebb89805dde6ae9edb064f3d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPPC09004530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595ae5e150cc9a14d8208912e5f628c43617890a2fb8d196f3c884db8b7e3f19. 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/JPPC09004590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8577af3f0ea1e5ca61879742795a3da65e0a7e232e6d44a0cb55a7352b080987. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/JPPC09305660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239a67428bb76609ed4267d01b927cae03a37068f775ff22c0925a71e881e8c2. 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/JPPC09325240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8494e4e157be7c7c9290ac8b1348e5c82a9daf62544594d4af7214c73ab62dc9. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/JPCR00008580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e38eb422866757477c9f7e3ea88c3b1404a54adb11bdee8620a3e044ba9ea0. 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/JPCR07300320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b74247c10439c3af12edfafbb17b8a65a8741b47161b0df80f1795f4395c4f. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:11:16Z), 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/JPPC08201840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a56e9b75f92d9c034fe52d0665173bcb06a381fdac285a9fb0e03bcb5df304. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPPC08102280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b74247c10439c3af12edfafbb17b8a65a8741b47161b0df80f1795f4395c4f. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:31:25Z), 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/JPPC08201840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5661b723d18563ced346a579dec69f4a1b32ae20e924eec9d3a8c16fdabd93fe. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/JPPC08201730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ecfbae5eb48856cba5cd1eac28be0def6a68095ab6e947ee3ef266b68613dc. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:24:38Z), 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/JPCR01808930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3522ddae24db43662f611a268e148d45e9a82310c0d1d49965fc8aa8259cac. 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/JPCR01809060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad140aa32ae3aa136f2bf873023ebfd822799c1a2df6ae11ff3bb2c7739d8de. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:27:27Z), 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/JPCR01809460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504c24894dc2a6a73c9f6aa3e00071b56e3b57c91931e7ff5a20cb61bd4bc840. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPCR07500770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9756a93fe765b526c10cc993ea05143054ad0f1c1f5e5815fe4d2d398e1c9d7f. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:46:30Z), 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/JPCR01809100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3f90671f0bd501b853de21934159073ce21e0821deb10e7573307538087907. 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/JPCR07400620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b8f07e3ce615cd3a1bcf5a1664dbac9803b763fcd03012ee8fddbaf6e2b544. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:01:53Z), 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/JPCR07400850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2795ebe716960595fc86bbdb25b166bb883c5b5a1399d7505d3cea376597ea1d. 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/JPCR07300460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c19d374b636c72d676e29345664534fe195967b8eabef7c13cbf28b6dcef785. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/JPCR00101240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c91b4f4a45b7bec536fc04fa35fa0650481703145866b3f24240935f405f5b6. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/JPCR01809080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd9e86bf0660736551f63368eaf9b1efd1662292c63babcc280c96dbe33fb8a. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:40:35Z), 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/JPCR07600740.
サマーピクニック～さよなら、またね～