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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847d2f046b48b00cf2690bad08f074fed3d66ed2679f0ed146afbcf618a155e8. 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/cb5f1d93-0a6a-47bc-b4b5-42038debe700.json and https://artists.proofprofile.net/proofs/artist/cb5f1d93-0a6a-47bc-b4b5-42038debe700.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e563f6f2912b4b251c5cdd32b4daa7c0f9e9c388abb7e7855f157fd67a26eaa. 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/QZTVM2399480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9133120c95760d45523a4c5f014dae7deaa175e9cf651f238d3c6d3324fcf95b. 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/QZK6H2022316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2648637fc587d74faa247c4bdeb4114b50afaeab17d12cb9b3febc9b0c90896. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/QZNJV2410736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d7b197e457798bd1e9be9a689386b3c64a5a8e43932c9e3d0299f653164c49. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZGLM2430452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253ee2cba7010a7805a1b3ffc6bd9754e0adbcce0c21e863cfe477c756fd2c48. 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/QZTPX2326683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf930e712dc6fc5b3e35d45d0a22e2213d22685dd4f246531e6feea2cb3fc02bf. 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/QZNJY2394300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd911f0be9b5a8e02829ead3d95ec2293ca606df841d892c9e1014fa6c9b30081. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/QZNJY2357927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39e7744893a36ca7a981bfd964c4b437d22c40dab8641908cb5b3eed44adf11. 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/QZNJW2300314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a47ac739cab5bf2b89cb7d38634c07738311307f688f8de78544ceb4ba8c3b3. 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/QZMZ92360668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533b2e0eee546f5cf111afc67a4508b7a0a3d0a24110c34031169d296a616074. 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/QZW9M2213395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cef571fc72d10e08410433caf66e46b4702d0e82106a37f1bfee85f60a4934. 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/QZW9L2261580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a96be76e63a56a2cd4b4b44c1b3b1af40133d62919fb1bc67ab6c87ddbd73e3. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZW9K2260782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e08c1313636bda58a7d3526594486ed5576f1740c418b3d17d9fb04cd2abd34. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZTPX2259475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044933bd1231d466a81b41c48b08c808d3015b3d8c499276befece9d9fd0bcb5. 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/QZNJY2245079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8565047ebc617105c37496106d2ab94429afcf60b3dfda5742243a9797dda1. 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/QZMZ92233399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95a18451c7f85f437a017809b8d9835e86fb57744edf31e5bae4cc529f7fe1b. 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/QZHZ62226062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488553ddf369b3fc4e43477a2ed647654428b5b734968e298e2bd6d9297509e9. 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/QZMEQ2030229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e4a62d4d239e24d293adff57750dafbf9d7b888be4e7f2afa51286fe07f663. 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/QZFYZ2097245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fb04081073728cd0cee19e648cc3fb7fb18f54d59996df67f16794962475eb. 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/SEYOK2416639.
Gata Rkt (feat. nysix music, andrehbred, son gotten, uzbell, el goldo de las conec, jack napier, edu music, el pesa 9, timy song, Jhon Jairo, chuky indica, chulimane, gabo el chamaquito, la f
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abc5b83f84ca6ce5a2560f83c5322b1c38005a874a73945dafb42a4b9731722. 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/CA5KR2301049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee06605a6894fe51b14a779b16e7e5d21e316a9108cdc9b7314c6def0586c61. 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/QZMZ92257448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011bd8a4545b79e4207f8bf4a4632033ca00cac36234882d0318b7b969baa4f9. 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/QZW9L2494693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a2179ee8275c7e109017d4cddeb20a7ae310051d5232f92533d357597c19fe. 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/QZK6L2068779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf79d9a0024c70b1aeeb511335878522a0b94497b1b52b5637282f02e1f54fdf. 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/QMBZ92354113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda855babc78607dff899e7fe295df92ed64d5e8dd031da694ee5bb4361fee660. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/US7VG2522757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9285980e3031a1d24701ab72362373d5656561d46c0c90796109ef75dbf61dc8. 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/US7VG2523401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7dfe57a356d430819e0ebc03b66dfb58a4b95c9dc5eda512d715604b5eb6b9. 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/QZW9M2426894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af4a03deee622fe61dbb0e086db69a7acb79880038b7833089eabf45e38df63. 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/QZW9L2487052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d34a0b23751982cc3df2b398e5e8d5d50e3e876e6039a1a1595c6b4f16138df. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZTPX2429709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65f219fdb2e748168f3fa1a00c97843f086f30c965e98788d0a7ed88a2ab682. 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/QZK6N2556472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1b8af164753ba7d36c995a41f9851dd963574761c9fa8e90b738ff55746156. 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/QZNWZ2078361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf796a6ab3c90f14c7647bb732395a0acb22fb8dea6c8acaf3207880b2e64f697. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZNJV2438440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397428ee2470086ad9af500754649a5853f6376507e60f0a7dfd35499297115b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZNJW2233917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73f2042e7a60c5c70e0d984829a157fea7c3981b7f9579dc33efacf49cd0713. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US7VG2496055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08dcad32af33f5e343b06df75028342faaa9ac552f06110cfb66fe0ec2c9c915. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZW9N2265327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac6d0f29c7312b78f4e61210fc70534094eef13e370b3df66e680a5432d52f0. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/CH6542138026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a91f2d47096392bbeb860a07049a0f7d3bebd8c37f5bddb38f2fa4d414dcd14. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USCGH2576469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22342565db158e56c64338b82514a75417e7c2c318c27b4c35f272e4ed795445. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZW9L2210767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e6b9b5e180e71d8efe1cc99c306e41c412ead51f87cb847db1e97d1c264608. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZTB42277346.