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 0x443f992d644ab3fbc224fcc2761c17935ca09c32ab808e4799bf6f8ce6b1bd2c. 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/e249dca2-8ba3-46fd-9dcc-cf8153bc9b6d.json and https://artists.proofprofile.net/proofs/artist/e249dca2-8ba3-46fd-9dcc-cf8153bc9b6d.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 0x8fe0c644792a74b15784906ce6ed0831b7dec965985729142f41c99f9486396f. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DEPI82432532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0dc27f5dee425bb4faf5da4d0e2a53c023ea17a549a36b6bd11b31d15011cf. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/DEPI82432840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae3fca08e4d7e14f7d3efe0e650ead620879fcc898c285567fd0f0190e0f1f1. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/DEPI82433430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacadff000e6b48f00ce4db43dea458d7981186529104268206683e0f15119961. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/DEPI82433425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2a19e8d44fd4704f7769f5abedd36387432eff6d9c81dbc21392675550e6c1. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:07:10Z), 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/DEPI82433428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087ddf4ca62b0164c8e9686bbb766e38ed11cd7e48f9293e246436cec2a69b8c. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/DEPI82433265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c459d5d4c4c21f8253815cdcb8bc409474580ed1535a2f787d60bcaab42347. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:57:24Z), 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/DEPI82433427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd7cfad3a06d56e875fbace5fe10b28fe7740ace286e22fcf3d08f528c8a88c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DEPI82433643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4be5821865a9fe9b7518d0d92c01559a2b47540284b026f1df0d66f3697b6c. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:01:26Z), 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/DEPI82434769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2245762acf924e424199f17adf594ef18169e4c2c6977ae7ccf0a4b6619004a0. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:18:32Z), 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/DEPI82434784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5871209d4f2dbef2eeece6cd99fdfa6819f3c0dac1a4086f18532512fcb97862. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/DEPI82434782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9174ac46969ab56885375ee44cde9b05f9be88b43c2cf9c9420ea944fbf772f. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:09:42Z), 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/DEPI82434767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11dbed1fd3752894cced28ade022b2554be884664a32864570a80c45cfcf68e4. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/DEPI82435042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944971747d92a84fcd6ef04865f3adf790f2fbec2e49a77053a883c075e8e3bf. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEPI82435041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc99c0fd297d75a60f199b1859e84f9e31438d36b1dda67e54060246302ea997. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:25:05Z), 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/DEPI82435038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecd626630debbd6fb23d2ac31f30f5bd51026770f5ccbb36b3894b358e740ae. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEPI82435043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6babd550b8a2d4c297648f4847592071f139a9acabe2405f604586a1aabade19. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/DEPI82435105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7656fdd7a6232f5325734e538ffb431fe656870b22cd524285ec0aa5a64fae. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/DEPI82435107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453d9fa8b1be5f4ea7f0472c3deb8e559186e6280ae752edf204509e96aad400. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DEPI82435102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8e66d759742cd29c9a3af0d1de13e2491a71614182c6249d77533b15395236. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/DEPI82435108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258e27359b4f3e4cf956c1078f3aca12601c017c885414445934279747e02475. 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/DEPI82435104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a374292a9e85640ec15fb276a9bdb8959df8ad3423b6649f58a2e1514cbbc0. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEPI82435106.