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 0x97503512ce31c2e06d652b827127ae8b3a6acb6cc058dffcaa0377e1b288ffed. 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/e7736069-9f9c-43ac-963c-34fb0f18b11b.json and https://artists.proofprofile.net/proofs/artist/e7736069-9f9c-43ac-963c-34fb0f18b11b.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 0xb9be0f5c5a154f9e1a38e805d9db9090be107ea34fb686e2ed1bdfa44871f487. 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/TCAIW2440432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7a4718ad5521e4bc9a06b3bb97ea81dc51233360564ab31b45a9c4ccfafa29. 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/TCAJC2449409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe20a691b99df9e8d780b17060e9d5b5393b08a889d72b357533df79495c1ce. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAJC2449403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad4f81a0030f64c57b452d920cafda768d6a3c09ce037accf240ea09a17ce20. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USCGH2558194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83f4e9d8844eb19684c389fe19d1b5a3eb88e18a9940c0d0585b1efced7d06f. 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/USCGH2558195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781e61d1cd6a2cf9376004299e1dec9a1d37f0095c4e82c985c739a00d586302. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAJF2552554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d9688c4be9b7b0a02b51af70d4e4c786d1648cc8f649831306801bfd94cef8. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:02:56Z), 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/TCAJF2552583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030d9a65cc4c9839ab2a6fd6aca095cdf9a1c94325ae9d87a603b970e072ac5b. 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/TCAJG2541001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8761c8863a432e08ca64ae425cdb12339b47d064c6e0532a90eecdfac214cedb. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:07:51Z), 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/TCAJG2540954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c6f3f684606319b3537687e14b4ac2bae346c0d506bf36c475fc435881e7e3. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAJG2540975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd413182af291a07cc454bb6acb62a69af6fad8ce03f6ab5e9b2851fcdd875768. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:57:45Z), 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/TCAJG2540960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c16eaa79578d9aec23cc9677c27e8adb815fc065bab573686f7eab79d41ced. 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/TCAJL2549006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb09e08757281fd86aa7c283cf4ae55827077573ac9af1a722f4a6d6b7740ce5. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAJN2588076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d41661996054eac89d5255a41ae9e9d542ff912002000e821e06381f00397e. 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/TCAJO2545563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576f0a3f4b1e3a6fd6c94ac6d32e9a38ac6b1c9d0f3c556874c3510d32dbbfa6. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:37:58Z), 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/TCAJP2567428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d816e8281256e5fc7ec690bf280021dffad65cbf5d4d1a876293a56957f2611. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAJQ2532198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e7df61aaae9a87c21d82f279ab0a5b99a005615d2ab7afd5c2ca7ab514d6c0. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/TCAJQ2532207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a35f49732e6f288b1a678846c73999a629efeecb462c702ddfb1ed6105c065. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAJY2534261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10532f00ec0356ef2b13b37568f4da4347de1d09b6197a2675e6d9c1d6995974. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QT65X2548493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d60865a920ee910fab7fee84c5880b4a70e57c4dce9ada7f36697eb7b6a2ee. 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/QT65X2558426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a8520415627a19765623da4fff34b84827637d621a01390180ad34ab3dd0e0. 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/QT65X2577563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b27e63f0f0b8cb958242ddcce8a630a08d74424d4f445d800cd747a8aac12b. 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/QT65X2577591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786992fd19cb04b0bded3f669f18691b5de98ac5c5039196fe5f98184803ce4a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QT65Y2535245.