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 0x998ab675ebbdfbc72ab0121bb13e1911249201e21c9699e7ca79ac15c4fbc566. 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/d2e7463f-d14b-4e26-b163-bb7b9f4b59e5.json and https://artists.proofprofile.net/proofs/artist/d2e7463f-d14b-4e26-b163-bb7b9f4b59e5.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 0x4b41af2e008cd303ee73fc53d6c9bc30c52c8206ab680827d6572976c68ef9ba. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:19:05Z), 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/SE4RG2401165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf27a2101dac710235b4fa46fe0dc5c3188dd8710b2107b2bf3f563b1dc6213. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE4RG2501151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaccead84110af02ab12624a75cb8e0ca48bbbc11e0588579df7a3c477befc0fd. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QT65W2507162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586ae67feae3701b450c8e57eebce17ebe40cd3c604957ddc0f3495c4739da83. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QT65W2548559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d18d4856f8a6c0b72212eee8f069e12096dfb3b067ab8a6ba1af38b346b5803. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/QT65W2548679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15dcaa69871e27e97e306554965c42c8ec264b97a08a88dffe1856bd6f21645e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QT65W2548776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e94f5b2889362dc0cf41122dd1d64370c29b290332af545e51a9285da37bfc. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QT65W2548796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9733f3c1eb219af01ce1f0684a4d458dda5d380cd6b97549169cce15e09f6f49. 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/QT65W2548809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c0b3d1fca9685e896975ede81093eba540be51e7311172bc12c63a84777e44. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QT65W2548706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e65726aff7796ae07cec8c7930a25cd267ddd6ee859a3372a32346401f5ecba. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:59:57Z), 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/QT65W2548415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe4f1ab7a44a4fcdc352b82cde471610ea52baf05be24951d0364908c1ccf1c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QT65W2548650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c9c5e1f892dcb0cc794c3c21f2fe580e0af79b4bc06ba12140ac51ce360c09. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QT65W2548596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a217ca9fbe124f567f719ce7b8619204e9d9ae7a0e51806c6c32cfe289e5c5. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QT65W2548525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbfd48cca23395f3f2d48216d5fd8b2aa1d2580edfa5eac59fe568463eca77e. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QT65W2548725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc751a4894a6c9e8918b57d0ee312df8acba523d5616d130161d5e72551722cf. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QT65W2548732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0188eea91cd44c3678d007ffa37b9f489b82fbd8647f92dab8254e6259563b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QT65W2548624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0a8e8fc90b8c4c81e80c7cd4172342bdb6863e0a1238161af1d7df5238cd4c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QT65X2522176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9f022cbed6fb90a657ff255898c03c51ac61608179bcfb3dfe511e24b28ec7. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QT65X2522165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ec1dbce2b727a37e71eed747f9334e517f440cd92b4c16617020287d4438d6. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:40:40Z), 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/QT65X2522128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ca05ffea2f16193eac0efe97af2d084c9fb6852d03418b7c77d329ebaecc4a. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/SE4RG2502917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0547fdd6749fc857a85413ea651b1b1987643f0c0f2926ae4f8f913acd5e3ca9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SE4RG2503157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abbde2b3fad5df311a79cc0009f11452ba704013e8c6346b42f0145fcf52b4c. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/SE4RG2503380.