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 0x1a3ca3a63df1dbef4f091f1249eaf782d25fbb47c42738e29249ea6c661c4d8a. 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/24837ca5-f24d-4648-ba54-876ad49b84eb.json and https://artists.proofprofile.net/proofs/artist/24837ca5-f24d-4648-ba54-876ad49b84eb.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 0x9696e52262063db2227b46311269d42d54b3b25deefbc7823db9b366b1ea85d8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEBE72200368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8258e0f02494fd190be323b409be2a524578a1a5101f96cf69bae0d188a792d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEBE72200369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dce53373f7367517d5c4a214be5f37ed8befc1044b59faa35e4a69bb4f5b13. 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/DEBE72200303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146eca8136c0be94714b86fd6fd005d8208a6b316ef51e00b535baec3f81afd3. 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/GBKQU2449564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75025f9daae398a7df55851659e56298ea83e8a984f380a3467af3c5f415236e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKQU2433171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3734c6bdaddcdea3b756397bbe3cebe3730e1431adc38baa323a96502f2c08c8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKQU2423981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b88f6b87fa20e104a9dc36fbae2a9cbb4b14a3a4e7d2d385636c8ed410a7eb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKQU2414352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b7e73a914d7f60be2476e8bca75aa3150cf01f3cca04ae58a11cc655cf9d78. 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/GBKQU2404880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3f16272996a887ba2c138831e6afd9d1edd8ed7c6d384ad59d40b6c9c096aa. 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/GBLV62320360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c2f8b507322606d93bc4dece238c1a61774ac2db8fc4b4fca691fc43b33004. 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/GBKQU2394217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9137198f76aa256aba7ea605edd36bbdacf3f88ff4ba899612c1359e79e71ca9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2394220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5739143cdc209ac865a1534a13ee3bf7c765dbedb6011900949fac18fb27eddf. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:38:59Z), 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/GBKQU2394218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522b2c37292a2a82d2468b60ed5a0cffb388bb1bc06af02d598ba621e40e267a. 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/GBKQU2387979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b10fac8b571c3cf03cb6e87232925b1ec1e64082ebcd846c3cb88ad80d0c612. 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/GBKQU2378132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f70173c52c7bd3afe46d67ea6d5d11d18eac8be54ba938e6f8f7d7b445c0069. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2349230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b37276134d1162887d14473ccb3412d6e359581443bf26354652bdebb6e59e. 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/US83Z2313759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715c01d0850ff1d218cd48518145ed83bea22f6bc56e183d22ef64449665d660. 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/US83Z2313760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3974698f297c4aba4997a69ea0ecd9288da3145bc8be8a628d5890cc2ab8aa. 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/US83Z2313771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc392084f3a13e849f7ee03f7d4fc61e2c1c5441b4af7dbe120710b2cedf4e5fb. 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/GBKQU2325852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecec20f5d495ce101a7b20f0ce0fdf3123281b895ded1f49c6eab06b8205dd4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKQU2317645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8345db2ad5b0e550f86448db67c94fd14f3374eebfd957ac5b004579f4a7c9e5. 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/GBKQU2310204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2007a77e2283ba630a0d0760d65eebc16e4214df8d3f9b9cf0e8ae2aaf4ae821. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/GBLV62215117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223f239bc52511f18e90409b1b809e823beb4efae24c404f3e25bfdca97b5563. 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/GBHEZ2203391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b3d054d34ab074cda93dc9745e5b196abb751ba47f25abc764fdfd4b1a69cc. 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/GBKQU2261537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ecaefe3ebf999ed5936af63e99be7a16bd69934f3ccf6ecb900a1ec0722e9f. 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/DEBE72100747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb891d1f5e828c4bdf7806f9eab177240f78230cf984511c762c9079e87023350. 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/QMEU32107127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394f05b7ef4e4724eaace1701010837c1cef7b7f53e0cca00dbd42513a78e875. 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/QMEU32110991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588c9142a7b780ef90cb3d0abae877215880a17e20c5b490b174790bee9fb150. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ITF3A2100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b94d3e992c817a07b97296efeea0e4a03a738cc55abc62adb77cc05685781e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMEU32029812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc681e831508b54b77895d1950ed396ef2f3364543411b6348e742ef27c0b6402. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBKQU2466914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ecaefe3ebf999ed5936af63e99be7a16bd69934f3ccf6ecb900a1ec0722e9f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEBE72100747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d96c3672688aacd66686372f2eb96ea4d66c37d0a65e74582896dd7ede4836. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEY472176343.