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 0x73eba509e76d9975216de812db811d7a0e603311b9e1c5084a3b0e0820bec211. Chain 2 (Bitcoin): anchored in block 954573 (2026-06-20T15:45:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b42c9c0b-2893-49ee-b588-53d1ff51a35b.json and https://artists.proofprofile.net/proofs/artist/b42c9c0b-2893-49ee-b588-53d1ff51a35b.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 0x10f96c17229667b8e5d94c7ac329f72b7f23b236881e367392f7ca248571a594. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPB622202763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa3ffdf675b9fcfcd11fbd1672f021c255117dd40c69dad1c159b5646d14281. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPB622202764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2ddf2341239872ca00ba3f59813a6489ee810d35d4e7a0fae91162048f6dc0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPB622202765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e2c8b873b66ce7131b27161113af2c73227add806afa4989bd9d2705d40d78. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPB622202766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0f63fe501988f31d4c50ffc786f813db181de4ff40dce7f0d8f008eced5486. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPB622202767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95932164b37c321d9fbfe87326ede2d3fe4af7e8cbacc016f658ce1189ba905e. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/JPB622202160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63dbb326f6c47d41863d3b2d07521b90c9b1c3f869ec4819d64446a1a02ffce4. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/JPB622202371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdba39f2259718d67f6cbabd9afad2398469f8f66b5df296201531f9bacf8cce. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/JPB622202582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2a00ce85413097ab2414d597b10c547d1baef0e3f56cfbd16c1446239a7462. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/JPB622202768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf535ff7be4ac5ea758e11b8bc6188c9f17a0a9c72415278d58afb13de9e18052. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/JPB622202769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c7d7a3b9dcd8586ce0e3650ac2ed8a28cc43d879653224dcb72672e317153e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPB622400397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aae3fa566ef2af9a2f79369a6473eb2ba16d41335d970fb82bfc90aff60af55. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/JPB622400500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d4947010621cc91854eade41e004edfb8c1a0a8491ab8dd42f2b01fba530b6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPB622202062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963051658e18b023db8af07fb161ee184a70e6dbd120a4906883301ab858f50a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPB622202063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6199e1b4d75a968edf779f83b0c2d5e76d2c94b6bd7be7f12fb12fca0c0ea99. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPB622202064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8390939ec9211fda7005c33fdc27fabbbb0cc358b8f5bd64e9a0e17a2b6c78. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/JPB622202065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9616cbe3d623c68780953ac0a26a7e08d0d2d7447f0e08c1267e06d04b9cc7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPW721800291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a3599487de95aee4b4536e542a1ef2d8e3a5bf109b43bb87611d9e960ced07. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/JPW721800292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1839ea48bbcbba2c71e40f693fd4322eb41058ff392253253e9a8eea1f93a4. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/JPW721800293.