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 0x4a6a8a92046c529860ff55a3447d682c1571c7ba9d4c177b26500f91ac89c027. 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/036aae70-5181-4517-a5db-acc68792c98c.json and https://artists.proofprofile.net/proofs/artist/036aae70-5181-4517-a5db-acc68792c98c.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 0x2614bcec0f523abe28c18672bb91692f4ddf6dfad579846e221c05fcbfbf03a6. 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/USHM22303335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72dcaff1d4a4da39ba7e5fcc759f8f100550b5120b0ee8d024ad6a6e46b442e. 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/USMH92317335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b8670270a5a3bc07c935e28e5158dce6525c96f7816571e598929d4de1ddc1. 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/USDY42200776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd702b11bbc57d701e84ade1c3a1464b92075040b6dd476bf90b2eb5dcc2810e2. 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/USDY41889457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5ccc648d03f14bf91709d4428bdf2bb31efb86ce61ed396dfb49f2ba52e1df. 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/USX9P2301571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408fe825d4348b09823390e338d9653e8393f2fba2673b6dacbfb2e335b18a9e. 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/USX9P2301572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0568a7048ed61f7ad8602e3ab3fedce3b45570367f82bfe247fdbcca25a1247f. 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/USX9P2301573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295031a953dd27f938aef5b3e99dc642724f8c9811712dee5d0b5619e957c792. 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/USX9P2301574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1651c6729c3e1b1e05438f8ef45bf2fd433275536a6fe03e371c94bbd58ab023. 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/USX9P2301575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec4a1cf605dcc6e6cd4f586b9a922f27b1e38e258ff2c14083d739ff244bde7. 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/USX9P2301576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5039918e04629adc318a833608c0e1f90fa1cf7c50da2a7dd4d775961b4f3ecc. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USX9P2301577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6e385f6a742e2e9ba4956dbe58a526184fa7c55e3e51a431c0379e2ddc6e92. 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/USX9P2301578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13eed63c2f4f4c6ea6af6cfb56d3e42fee296f3bc31497e6ff3a581273292c60. 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/USX9P2301579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7804a77bbc963cc48383661e3c7b7b36dd2ad089638974633659c8c4a733dd. 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/USX9P2301580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f7a75478fd1ec9bdd696f4a7965f0ae3e23e3f2719124e2f2afc5a13f2e68b. 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/USX9P2301581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bde764ed93ab255fb2ba4c635f2a0cbe9ab923bd36c7909b2cfcfd6781dee0. 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/USX9P2301582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde4cd0e7df1893124a5f7c1e6e88a5100af19c1fec9e79da1e86b1b2f5fbf1b. 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/USX9P2301583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c0c8637fed379edbeac3f07cd25bf067b017808ce12b4a60f90d5f521be3e7. 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/USX9P2301584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaff9c67031820646449b1a2061673e519d6e4dd2adfac1e585817475a217a53. 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/USX9P2301585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1361c23ce7d239df0d280f96d47a3dafd1cfe06368f45f42ad1e42736df0fba. 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/USX9P2301586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d36247e511dc7ea61cad8c87275e14811faaa7caf4d3f809e5f1f4a4e9dcd9. 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/USX9P2301587.