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 0x09bc8a1293f86c917f128008c639a42a0e7a8e87a8675717720dcae8b4e222d6. 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/6b3c4ec8-b4a7-4ae2-82b4-386633ce8041.json and https://artists.proofprofile.net/proofs/artist/6b3c4ec8-b4a7-4ae2-82b4-386633ce8041.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 0x3c1c6312f12d1c28d0e118912ed69acc82b86e8128773cca3b163a60ee096090. 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/FRX282459567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3791917e9b9979d253b3a56be528c7d3bf0167dad9f400f6e0e6371b08f98b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR59R2405308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe285e9d129a0f71ba50e4402ac600a7f5109acee8666c7bc1749df45badce8. 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/DGA0P2331024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61dcc51cf47a869139f36075b619cdf42050e6b55e059d49972418e2cadbe35a. 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/DGA052346918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f5d251c545f369f5323fbaa16d584b5a236fd0b44b3afe24aa7dc4785ad829. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INUM72300287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72d830a2eb0a1dbe697c0c39ad51987d41a5fe7073d9ddbb9eb24892eb16a55. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR96X2248958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c013490592e620699d5b9c29dce5690feebaecaa81fbd953f9016586c851c5. 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/FRX872114633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dca387ffdc6a161cecdbff390b52b3dde93449e00f036330dd7b03f40a93ed2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX452109736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31cc068e7231c6ae6b43262198693779c5d1af451aeec25b187a3197f14bf5b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX202107587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfcf9b973ee27fb70fed70e58ec0a73ca0242ecb310ef5b801b18949742f9706. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR26V2046480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3d1639a138e7610da9cb98755b375d76e439657f08f654f08ab75105c326e4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDFP1807754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ae4b000575a30526738ae32206e60a5d5866741bf2bade44b127befc323b20. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN52020316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab98c2dbec0e0519cb82e340443d3f736e067db13f865ec2757beaa60d68d68. 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/QZFZ72067354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa811afbf6919324f5784b94aeac2efe508b4b8ce7d9618a68bc34cf70383cbde. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHNC1965283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bcb76d3638fa075fc26de84105815601cc4856111608f0addc15064ff9a0a1. 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/INUM72300580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d8114504afcba8948c06d838c3a593ebd42b3bfbed70059a67f184858ba48f. 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/AUBEC2208058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a08704bd48bbb38db42429237ecf81e05cb492d2066bd285ef357829e249dd. 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/FR2X42532874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96d668b3b3dc31af60467e667a67539e5e2f9a8b238662e1dcf896ca39a86cb. 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/DGA082472406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d400cf0976df4a2010388f2f633b7183a5736c25a2867f1fe147125e0843d91. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2256303.