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 0x2e63a61eb827560c956ff3ca78698f4da880c8d5b9713df23651d4a3e1f39f83. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c21b4131-7adf-4c71-8702-fb4d18edcbfa.json and https://artists.proofprofile.net/proofs/artist/c21b4131-7adf-4c71-8702-fb4d18edcbfa.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 0x5bd7198616717ba598a5fecda2d26465982a298afb28c4a90d7b24088a158bb1. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/GXH2J2564005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e27b8fe6e28dbd30b19cad48755d98f8a2784ef9e760e61ebc46d65cc1d636. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/GXH2J2563980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f22774555ee74d00dd2a8a763c8cc90c9866115d35daf39c2926049fd846d6f. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/GXH2J2563994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c033595faec606c9a4833c3f4a992d8098ca2a4e2189dadcf28315d3a29af7. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/GXH2J2563996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cbd3035010c816d97804ea0dc52586e970c497abd9a7d959f0d8ce8c739270. 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/GXH2J2564010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5a51699024a650ebd8f3ee21f5dbe5d339ea514bfabf060f8239d9b03d19d3. 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/GXH2J2564008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f7c307d40a6cd0e447a4f0db1f0d4561cd73e2166ea21e170c46fc4685d192. 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/GXH2J2566868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb046a546e769200ef892f99f44e893c88e2474bd0d60f6fc1a0ffe071541ce1. 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/GXHAF2542269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc592dbdda46978afcfb52bf65292af387f08a9eef926d300da7c636b405394ed. 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/GXHAF2543036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5722e16569eabea33f3b57035ede28bd849e21c15510c6323174032de9e810. 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/GXHAF2542418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1e124a3ed1fd0bf9750de5178f2f1ebf583c3978d6ad66d9f7ff981c5ec79e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:24:05Z), 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/GXHAF2543089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0074cab5fe087881a96a8d992f1104e8dc637d7b6d7e31e228f65a9bd2414b3. 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/GXHAF2592286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0ee085fd7631bf6fb9ec41ea4aac123a553ddadff51fc5f1bc6e60c7021cc4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GXHAF2592289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2ad296df7ffb73fe98e6bc26d3bbd51c1084251894583dbfee0f490a5bf97a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GXHAF2591981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08fb7103a59d0d995a11fa05384d6582d52dae03c3331ac4d17b94ccda777f38. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:09:02Z), 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/GXHG92536199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cfeeb9e877b498b73f94855987caba11c714e7ed9298fc998a825d45058952. 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/GXHG92536201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d76a37858bf0b5d51f0d6bd523cbce8bf0ce134aa4688ee2a3b0ad113db12b. 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/GXHND2504063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8239a2b3cb6e5cf2e1e762c17f77a4cc1931cca0702746a15919049be7b4f9. 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/GXHND2504093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc926b44075e0a9e780c2f6fec8a94af91568ab2ad1a68ef487515bf9842be664. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GXHND2504624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226432fa0554c2e9e943168f1214ff3cb97932d7e15baad959684b06118deed2. 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/GXHND2504455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfe35823d82fe0d4b3dd5617cca4eaa3e2b452c9d3806dbb311541cdccfe03b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GXHND2504449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa95c48d99505aa3ae90d0726c1fc692b584b59f11056d5d4247e7553709a99. 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/GXHND2504463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aaf72bc3255d669841842da878521ca2022c0c1cf1ab88d6d43841d32bb47d9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GXHND2504060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2c88bdb9cc850c40e546d4632a2eecfca932aa1968ffccf05cc70e11633ac6. 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/GXHND2506397.