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 0x4e0c14d5820fe2c76c28e3ac754772a27f67ee477e282f917b8436ab670997e5. 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/88e163d8-e3e9-442c-91e4-d6ae535f8aa8.json and https://artists.proofprofile.net/proofs/artist/88e163d8-e3e9-442c-91e4-d6ae535f8aa8.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 0x720507dd705056b8349261e5fbd9e75981ab4557191acf750fe613fe725ab7d3. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/ISA111000302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb3aefc5ee70e673f335d7ab62af487c7d100c66a56951bdf30af97c5f50260. 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/ISA111000303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5df2a07490f1076da39eb5a35b3154c9875b108a5579a73ed8cc8db99cc78c5. 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/ISA111000305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b62b590da46227661d659b0c0905bd9baf5d68f58417f2460ed647f0da94d0. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:48:56Z), 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/ISA111000307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e652c385a622cab872bbdc57bd521d822950dd9200ffb739c0759127151b26. 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/ISA111000309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c24358fa66ed7d8ba4944347c738c8df31451d3e02518f594834bddbd678048. 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/ISA111000310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323ef540d56ee4ae93c85b0bd58f9c1aa78ae8e84513241cf8c11fea7fa44a63. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/ISA111000311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78986fe8ad19ede74829acd04e119f9a717c194a38e710522e3a59b382266c15. 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/ISA111000313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e6ea7094a503fe2fc8cc3d94f01c156a7fa2a648f3666d11ce3840a5c4b3ef. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/ISA111000314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da43e73c808048f21e0542dc7119cef95a84d2f6ce858f26eec23eebadd2885. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/ISA111000315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b50419a29b7f008ec7a8a3cbb204c5c5bf70637fffe034f9a1d79e2ec627b48. 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/ISA111000316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bc22435bf9cadad89378225f7f937dbdaa05597342003379ecc64a778c8f25. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ISA111000319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754bbc6a3de008845c730ba26b3e52900a62e2ea82c7d534c67ad4ed0fb393ce. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ISA111000320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca48e5beaac350ff087d145fbb5e268284f582e25b504d2e224460d27b1dcb7. 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/ISA111000321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbf734a5505762c9d117f16fcd6a733e11dc21a16c6cb9184992cf42ab306fa. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ISA111000322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270938941e8833a47a71ac5ef9ae6866137e18bc88cf73ddfc398cefee5ef5a9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ISA111000323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132aae3fd8879285d847d1ec13865e6b8ad00a5c1d921db9eab6845980bd5a57. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:29:18Z), 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/ISA111000324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d5650e896ca1734201097f02f2f1abc9333a75cbdf72835001760ed1213cee. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:50:00Z), 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/ISA111000325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6152cd112afaeb10c6804157a5c02427ebf5dcf4198f37bfe8742d0a39cb09e9. 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/ISA111000326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7280dd4a723278633e6b379e9666f0ff4ee4425295b8dba9b58611b8757048. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:24:40Z), 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/ISA111000328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c775b03c3be89f276f59948a703d6517e503769063ba57f2ec953aa15eac4e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ISA111000331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50161255b76dc79a697b7537ab0cf1b5499ff0ff7002c7a3239c613a6849ecd3. 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/ISA111000332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc005da6c3cd2be9cd720aba205f8af9258a97e28b06ba05b4cce6f2c3510d8f6. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ISA111000334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107505a0f08337677fdc84d709a4d7a6634010c022239d140de9b64ee1aa8def. 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/ISA111000336.