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 0x6605fbeeec54bbe77f7200294483ca884cb8d30189fa0f60304958bb8b0187ba. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bdf4689e-0f33-4b76-9120-6bd9627765c5.json and https://artists.proofprofile.net/proofs/artist/bdf4689e-0f33-4b76-9120-6bd9627765c5.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 0xf7ba4bb346abb2e5496fe3bbd9f27d159a97cc2763ab7a9a31e9c20f736ff8fd. 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/QZK6P2305982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2041b93dfba5144888de888ea6cad1d449e96bf43901a8bafc93bd2f7a95ce85. 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/QZK6P2305983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e62b775a065ead04b33d25d64b55eded2377ef99a72fcb38a825f90d4ee00dd. 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/QZK6P2305984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd96cec82f1e1c13c83df3cc5b760bb1a0f808afe0f7e66fc70f9de52a60cde. 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/QZK6P2305985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f9c0a848092ea756bd747d2dc1de8f482be6fb40f228d02f819a93d6c70e56. 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/QZK6Q2319160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b388374dd2913896cb714183503108fb25394a9b99e4a160f87451c4da10195. 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/QZDA62307049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3522ff98fcc90799cbbfc4aff4dcb6a8cf3eea68787a8c68ef5bca01da112946. 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/QZK6Q2343610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84801d7f769b5fabdd8d71f461439ba37fcb7a3ebb268bb5da7d0fb92857f3fe. 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/QZK6P2305986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee26e13d9574752a89bcbeade00c58d3cd2071caa759b67dbb716884eba53b4c. 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/QZHNB2340261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b2416b094c36f33e91c9b5b7373f9372093f83c1acfcae0f6c321e9b989569. 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/QZK6P2305987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3522ff98fcc90799cbbfc4aff4dcb6a8cf3eea68787a8c68ef5bca01da112946. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:40:39Z), 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/QZK6Q2343610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f9c0a848092ea756bd747d2dc1de8f482be6fb40f228d02f819a93d6c70e56. 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/QZK6Q2319160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee26e13d9574752a89bcbeade00c58d3cd2071caa759b67dbb716884eba53b4c. 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/QZHNB2340261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b388374dd2913896cb714183503108fb25394a9b99e4a160f87451c4da10195. 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/QZDA62307049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fa2e11e90a2f340d8d885df3da9e78e0fe6e3254f76a4ee3caac4c1a3678ef. 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/DGA072120860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29887430ff994818454d3a0532bdeef8b68a5b84bc6f387918f77c65fffc7d5. 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/FRX282323450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1cf26d9d3199c3a6265f86e37520bd2623757ff857e6a1e6e3b2b81b61e1e3. 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/FRX282323451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d0c18f5fffc91c9d80708e6c70ff943860a59a5e72bef48db2008c518cac4f. 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/FRX282323452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff268aeba714e9976922e09a2b1f278a405c1bf5730c720cd9e5d26a3f1bad07. 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/DGA052246701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd7cf45981b66a9fe2197baeb764f97bd8fd7aaf4ab52d601f73383045175db. 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/FR96X1856825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c6689ac7a7336759a07dde0cb2165b9d8c3c3502701cd3f338850b8d6d6608. 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/FR96X1856826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd421ad03678eb4458496f83bfb8c3e123e6664a88a766b78f45e33b4260c334d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/IDAC52390041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90efe6f606d6ce3a3a5cc3a22d1fdf88e47016ed1a216e597e2c382bdc1b539. 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/IDAC52390042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff268aeba714e9976922e09a2b1f278a405c1bf5730c720cd9e5d26a3f1bad07. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/DGA052246701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26ef42947c39379139ac7b00fa9411e0605d3e1bc46be441a490721b0b43282. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX872139918.