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 0x2dfd23018e612d101c881e8855593a28f9ac2405e8c62a59e8b3a73bbcf6583a. 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/522a1c93-c35d-4cc3-a25a-d9c6b3ea5e07.json and https://artists.proofprofile.net/proofs/artist/522a1c93-c35d-4cc3-a25a-d9c6b3ea5e07.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 0xeb971c2525ceca1dc4dbd99c2ab89c0fe24ba6a5f7d90e0dc56fae162ad82eae. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAHX2435990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a35cadf024fddd6c63f0f4996e2e7d4aa8255eca2d2aaee253affb889a3c07. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCAHX2436003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02975bdafdd20a8e11671eaafd6c8568b7ebd8c46e8096fddfb9b89599fe6ddf. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAHX2436011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08b88acdc44ffb9dbb8e7c07753fd8ff7c9ed79bae133d01d98c8329bd23dc8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:41:37Z), 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/TCAHX2436026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193f7ed54e1fd0cb4ac0d3fe1b73fcbedcba597f4d8d2a6f9383755d1d4ed647. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCAHX2436035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a38b8ad133ed518bd8f48bc55ac83df3387585b4dda1d7a9a9ea0afcec0e58. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:52:54Z), 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/TCAHX2436046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d5a1a684ffa8f6223594f959dfe44e08f1281cd190cd418b72f0b081d475c7. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCAHX2436056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf5a62b4a753c2d55dcb06480ba8c552f77004635488222ffa68d6683fc5a04. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:16:46Z), 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/TCAHZ2406574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64eae883e534a1169f12eeb3384b7ccd25d358d9605eac6a62296420ed38f088. 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/TCAHZ2490756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1d2be462827f7e3efc51ea238a9070827897744532e272c46e3c48d43cef91. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:55:47Z), 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/TCAIA2426328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5113b68f2e4dc900825dc3a379ce0296b89a628b8c88b8860841307153adf0. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAIA2462550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e1e615b28dee318d04255a801d0c27dbc1585b0cc32a0abf2184e3b4ceab9e. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCAIB2466408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48433a33a7a17654517ab59fd21106e383b383d49f0e5dd417e08ef4b2b8a9f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAIE2479560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb86c74f9050ec7317e4bee43c305752e59e9745879819f212350c9079dbca5. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TCAIC2497770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c24816294af4b123e9198f1ebb0072b452e0dbaf93ff90717183d2677a5bc5. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TCAIE2442533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69344b4549dda80c431e46b059395109bbbb97118106d22fbc3dfd231b611f0f. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:54:48Z), 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/TCAIF2419736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8c8bed7bd54e27653de49b44fe15f99fbef606d09326b638a8f646336528de. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/TCAIH2451892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3a785950a9c39b3f949c64671cf55255d890978d663c195123471b98138287. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:21:19Z), 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/TCAIM2477906.