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 0xdc6a31c1435c0dbb57455c3b49e8ad2cbe164814dd5c97bf5651a051e750d31f. 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/8b065839-26c8-42b8-9111-da03a1cabb1b.json and https://artists.proofprofile.net/proofs/artist/8b065839-26c8-42b8-9111-da03a1cabb1b.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 0x45d1d98c6b745f5625b7bf85cf8db31074e1ef07b4b4de73cb65e81c52ed4d04. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/ROMCD2300470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b23f331384c17b62a847bf00f42775e4b1513a9738122b53bb30512643834d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ROMCD2300613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c225a943f41211aa895b65fc577ca35bd519953d773f0c13c3989893c00bef. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/ROMCD2300481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e871282a62ea2de84f9f5701de8b77cca543109027df53a044cfd1e1ed2b94. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/ROMCD2300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf110510d2973385d7e949bd358632c722f221443037dab63613d92892c62a1ef. 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/ROMCD2300309.
Simi Deac Și Luminița Pușcaș Etno, Vol. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d3648fad0815ce1ffe0bec59c09f3cd712725f7ca4218a50b5673d7ec521f6. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/ROMCD2300732.
Simi Deac Și Luminița Pușcaș Etno , Vol.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939518ead4b836b818c25ca2e0ae2241d1aa38eafd115ff8e9bd7afb7cf0a3a0. 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/ROMCD2300163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e745302fceb05c5444c3583a0deb92b3ed7f67f33bcaa81428e46e91d36123b. 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/ROMCD2300532.
Simi Deac Și Luminița Pușcaș Etno, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c88d66115d0e609dbdd78b9985018fbc801cff9733a73d16e3dbcfa13ba5b4. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/ROMCD2300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c1119367fc48b2690b05d32d874e6d8213b8e0efb9d9d3a47ee545edb80653. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/ROMCD2300513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020acc25eed669e321356109f9778083c2b29d08423b30fbf1b66de56e354bae. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:36:18Z), 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/ROMCD2300491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e967fc470994e337361bb5bfe902ad2bb6ee3ad7bcfbe6542189883cab9d781. 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/TCAHA2313365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e344d8cb3da4cabddc2c72cfd69bd1d2b8492c572d8f9bd8e47ec9132c6790. 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/ROMCD2300725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53066a0e2929b11fb94b75aa7fedd67214cd5d934af3d752e5c7a67265c918f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ROMCD2300729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2aea5105528683fef130d65cf16eb42810583f01915cb7bc6645aa0fe815b6. 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/ROMCD2300138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975dcf941bf56b3be26356f3b266ca7e093043f89ceb759b9acbad72219b00dc. 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/ROMCD2300134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc35485cfa92548eb4feaf2ec0afc0f86aa1f60564596935c61673452a96a0a0. 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/ROMCD2300391.