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 0x5def402a00de85c20bfd7ae90e3658db89110a60aa1e4242f6a2f8a1d10897b6. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dd1489e9-46ee-4873-90a7-2923b6d226d4.json and https://artists.proofprofile.net/proofs/artist/dd1489e9-46ee-4873-90a7-2923b6d226d4.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 0x7fa885db9839e86319393f994cb1a65c0bd0a458ddb331ee883fadd5caa69e85. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GXHG92509558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1869b306e0502f15ca2900a890e2453a4e5ee08fbacc600c00d7b360dac5b312. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GXHG92509656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fbf0b92f654f8131ac818e9b64cab3536e867c694be7da7f4ce94344c0ad9a. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/GXHND2522306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6466cad59ab836a1f5a26165b4fc8a2323c1247e7ad2860e1b33a7fcf4d036a8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GXHND2519909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df699eddd565d35270c9563c4f4c30182a3aa0eafbe8f055ab1568f16ec6c99. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:31:06Z), 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/GXHND2519914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40296afb2fed0e9e1a971551f4a7ff9e6d5b82ef1fcb59f35fb1a11470ce21d. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/GXHND2519916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7942838641d36d072e75240d9d41b505e44253bc5959cd997c8ccb886740f43c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GXHND2522308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8899ffdd42106ea4245e588263d3f824947b90abe2fff6baf20c05416c9b9a5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GXHND2519908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c03045b50d10d8203ef8056b1b0d28983860c9fc4cd5b57bb2c82ef374d3cb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GXHND2522289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa76c28f23a6c44a611fd654f61010dc6b1048fcbbf2d2c59a084f3145aa34d6. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:58:03Z), 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/GXHND2522303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa415e5a0ff9d1bb2ec2b056cb15c355455eabf2c1e79e298d413aea27647db52. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GXHND2519637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3f38d465f52b52e3967597132bc115c4458ba239cc9dab20d14407579d8180. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:46:01Z), 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/GXHND2522301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8db97f4d81f5767d090b304a2c6e8d25e6cda82269b0ab745b801d66757c7c1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GXHND2519910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf15455a03d8db6ca0ccd32ae45bd4a6224cbe980e0127dda3f67eb4da0e7685. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GXHND2522278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364a9f266a8b96781e5e54e827aa7e089100b8e3da81957f21dfb735b81c4ed3. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/GXHND2562659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd039bd29124d2b68f0cdd29c19b8889ac18123f95f0205893c41f35157e2d697. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:37:45Z), 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/GXHND2562575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c78f21ebc280c5d14bd2b599406e3cffe5bfe0256c1de4e6c3953c0fba36c47. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:56:53Z), 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/GXHND2562581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c68b861749e83c3ed610973301a39bdf0b1db83c269b9651825794df6a67ac. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/GXHND2562664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dde65558fea4726d2912bb2088c6bda8ac0673f675c9891f0a7bbd6eb410a9. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/GXHND2562549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b6d9f6cf39e36696a96db197767f9e2bd405f5b9f283b5559b1377256dd155. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:27:27Z), 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/GXHND2562577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015568646ae121fe3e1bbc38110c45fe2aafa79a69385920211470f93ebde23d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GX53U2627202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618db2ef2b7a6a65d79a430e26652cda25df527ef88e13adda02c1db98faf9f3. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/GX53U2627211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084996811d1ddaa1c2521122c5a85436293730d0d6209d80ef7bc369613e5483. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GX53U2627208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5509e0da8414ab197b7d075694b60ceec1a5383ab5579915518f3a845f96135c. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GX53U2627197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3950e1fde5219da8318ba85a93c9f75c1cbd20457360073b206407d99a8962e8. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/GX53U2627194.