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 0x476dff913b859ad965898defbe30b694c68bdade2380dfe7dcb6b7b6eeabe8e6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b554de03-6fd5-43a6-9c78-95163c8b3dbd.json and https://artists.proofprofile.net/proofs/artist/b554de03-6fd5-43a6-9c78-95163c8b3dbd.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 0x7f5db2716d72647403862922b591ccdf56d7aa55c76624a75a13231b10f34477. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/EGA252308151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808fa4c0762e64a60e9c10061247b1a5a5c707a8df643777d7e0b5498bd6f0fe. 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/EGA252402058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6e7670a4b6b42aae9961a2cc686b790c691250aef4bf26c492d26cab00e4f8. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/EGA252402060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f95ed8a2c778f81ea9af6dae39f467b95bfbf96d4f96c59c4d453304162cca. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/EGA252400378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9d8cdc35446966298398249113b863606e73e3f6cbe6410251312463485bb0. 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/EGA252400384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fb32abc959cb6b4736836b4acfa9f98f0ec96cfdb53d80a5ed2494306be5d1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/EGA252416690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86c4514a48a0d17ef42d2897d3e295726a62b52dfe8a5478870e4c952a3a475. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:32:39Z), 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/EGA252416691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cddb4f0c6ef94d3dcef106902bf9f937d1a5cc86b920ff9b1e3e54fc303be6b. 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/EGA252417286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16658b0fe41ecc3533d6a7812e4fdffe51cb8eb5e98599dead1a0a19cd0fb4fd. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/EGA252418051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf654e4540577c2369141c6952bf15be32b804765f6794883eb99278756ff7fe. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/EGA252501761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bc3ce4a605134e8cbb08f46b400822d779b227412d212d1977a6ff60457350. 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/EGA252501945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e8ad469cca001720aa16b6645d235c2f29e1d6bf76892ac4e4b654a0e61368. 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/EGA252508618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445b8598bea98b271b47c79d5720235866514da3ecde70fe05d9aa99009a265f. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/EGA252512606.