thumb|Christ Emmanuel, Christian icon with riza by Simon Ushakov, 1668. According to the Gospel of Matthew, Immanuel refers to Jesus Christ. Immanuel or Emmanuel (, "God [is] with us"; Koine Greek: )
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 0x8858e8c460a580d1a2cc1434acb4e8b798d4f3634007486afc1a73a3df6e5d83. 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/228bdaaa-4816-4192-8ecf-77a310f4bf75.json and https://artists.proofprofile.net/proofs/artist/228bdaaa-4816-4192-8ecf-77a310f4bf75.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 0x00e6cd7a2f869b1e5c25cede21b5e4169e4c3acbbce2ecde0b1420f41d11beea. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCABH1211519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7687c56e176716974a7375d531bafe4d1f9f5350e0afcb0e33a3dd8f63bd0ef6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FIJ7H1300075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3284d723b9a0e2fcbc1a0261baecb45b674a8034c59c24b6548697f4f58f6e8. 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/FIJ7H1300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c527c81564fab413f75878c03360fba5249d25244f7d9641543f792df6a2ca. 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/FIJ7H1300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa432626e5c3ec7057db2a73e7a3039521f7ea080d911774ce13bdb8ae2ea636b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FIJ7H1300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2069fd4551f9e4b0fb66ece08ee89873e8ef36835bfa860f7a67babec35990d0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FIJ7H1300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc918540c571d7ac39569eca196576843d1f2190ff0e4b5298ebd8a58c5b648. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FIJ7H1300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2699276aba250d46f48171ac5bb88ceb8b211042b81226fac688926b7651b58. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FIJ7H1300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a8fb4bea6d672c834e60283b48cc57524a34fb45562daa6943cea8c08a029f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FIJ7H1300073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb24debdb369f3a13abc7aee1575a10ade9a473681aa55251e18cf79f72427a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FIJ7H1300074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68893898f54db72b8628a12c6f7f3ab22e6ed6abb82728d15c4725d954c5faf. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/FIJ7H1300064.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbaf9d6a7492aa7c71bdbec8c2e3965ec4400355b46972c381c1788d57c8314. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/FIJ7H1300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2018c36e8a63703342d6f1332f6d6c1f918bd531f2987f88f3ff6f077eebb8fe. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FIJ7H1300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed36fbb7beaad62210e44facd7043ea5866dc053a98fde8d63ac9d763ce57c89. 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/QZTBB2468303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22eb73cf7de7b05f12df70a016f3255deeafd8ba023bd092d8ea89da45b487d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTBB2468304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f56477ede443ee761b02c087666c232b80e57328affdc095bc8abd7f9e2982. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTBB2468307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030a6aba0e42c09e072775051edd219df1d9035cb45732a10e534fca66394c8f. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:46:14Z), 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/QZTBB2468309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe855201aa5f4d40a231f004b25faf95a634dc263c9caff2daa86efcee3d0784b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:29:43Z), 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/QZTAY2258885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7936e50878c0d13b7db757f257c8d99f7c8f97b0ba788d58a735e58a69155f67. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:24:22Z), 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/QZHN82384795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e038af39db3f0b42b35a6c6210bd977c97cc6ea990d309a41b4759611fc72e. 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/QZNWY2308180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08bf8607f48b0e98f03a4bcb1596cfa7cf01c85433b3330725f1597ecc1cd65. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTBD2372394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7937efcc43b7ca82d6362a2e832f40f14101caa4d2525bc8683dad5a38634009. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTBD2372395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d63986dc10222961a959a8a8a291534db5ceee2ed00048fac75fbedc017cce. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZTBD2372397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef50132ca0918cfa81a2251339fd8520a652479a05e58fbc3e245f3fb4e040b. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZTBD2372399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7936e50878c0d13b7db757f257c8d99f7c8f97b0ba788d58a735e58a69155f67. 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/QZHN82384795.