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 0x87218d70e65e700d755d898c57c3a87135fc0251f1814f7103ebe0e2583231de. 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/396b3595-699f-4de2-a0f0-2de980b790e3.json and https://artists.proofprofile.net/proofs/artist/396b3595-699f-4de2-a0f0-2de980b790e3.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 0x4803430ecee5970c8b95e78e4b003d2a96cc8033dce9edcda0159e9848fcfb4c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCACR1621538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4c0feb1336031f685209f528c2169c6549f0b7a161ed24d1896508b812b622. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCACR1621539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e3c4cfeb237b5e36d0a42b89411d6a79928d98467911fef8b7974c23482651. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCACR1621540.
Praise the Stench (..Of Your Fallen Idols)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1ba0d890a05e6b89754b6d8f9028743ec6f8a864b3f6b62efd922eaa6fc390. 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/TCACR1621543.
Disfigured Hand (feat. Patrick Somoulay)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa356abd43019b2dedc04d3e97e830e36580b0297877100d80c131044909aacb2. 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/TCACR1621544.
And Heavens Began to Fall (feat. Lauren Babic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bf36cefc7baddaf12809f70b8be5e90a1ec2c5e1307b11d0774700b2d50f61. 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/TCACR1621545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef55b64958ea0cdf91aed92dc8efebb1f9c2f7423f4f36e1c3f121d16bcefcee. 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/TCACR1621546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee45c6d8b0ebeaa3778bf099b7706ab901e3c28e8c35ec2a143543d36541afd. 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/TCACR1621547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bc858c85a7aaddb06a008c507afadb862c0c60e29560cf3d142b2f3a1611b1. 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/TCACR1621548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628a491add9f79de80a99fd7fcfc045987e8fa2e38e044e0136bccee249c526c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCADA1730460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad535cd0e5c5eed7dfadaa0cd97925d5a887c53d2135e1a1cad80b44cb504f4e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAIC2441336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c785d5a4a264147e4f4478a265601cad2422a85067b12914a3c370894e988c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAIC2441362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8331fa3e1165384b4641d2136e5d4bbece88d231dccd993b84ad9e91119e48ae. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAIC2441407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147ea913c5b91bb98c7c2e87aa729c89e406a2c8611ea42d316080a84178fd32. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAIC2441441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a1254dc6852a6e9f374884d9e332a4fbd88b4c17e8d8b983877f1c77bb038a. 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/TCAIC2441874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ff78c864b05134b074f33edc1f56db45512a8c197479ee93b92bf383efa5bc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAIC2442005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d80a25bd656503c0e73dbca50820cc35e1ccf40843bdc5ddb5ef725a49e3010. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAIC2442020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328c7d4049f4e1b5982683ecef1abd5d0115dd54a0f7d10f72401e1256dbc953. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAIC2442046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda365cb242659bf72564365e86fd901e0b649dfa1d210e35a8f12839eaac8ef4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAIC2442076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596305e30b424208fc176c9f1571b8339362d8ee9df9c9c8771b0129612b4c6a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAIC2442100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd104c57600abe62babb6f3ce0e189ef79bd16ade2842d2e544e1c9d521c13f69. 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/TCAIC2442115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a3f950cd83cef653a3e7b78928a686d1dcd4b26b928633c66d1091d2df3163. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAIC2442146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8579e37f87d2f63f586637df14d8ada47c039ffbea304bf19227be1d8e9fe20. 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/TCADZ1864680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e7c2b5bb62f2f922d12b848a987e97a9789e27f209210a809dfba2d90c0fa2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCADZ1864682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5d87603a5360cce306c8d88b98ca5cce0e285554587aeaa71a8e6ed997da1f. 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/TCADZ1864684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca376da8e5fa0cf0acef0c72416384a1c51af0c6eb2ae0bbd73009feb97956a. 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/TCADZ1864691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce73657dbd780fd5485ad40aca580f1920e43d82781bc8add065ce2a6ceefb10. 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/TCADZ1864694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f835bfbc1e313a6880ffd4ef6f4c062831304ecce9f218fae908b294d0426a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCADZ1864697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed08dd777289fd128cfa46eb53b0eb04c77fab904998846026116b25201561c2. 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/TCABW1441564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e68dda8bd7f27bd9b8bd33cafd4516079cd80dcc8b3e26fa74a1dec1ac16ef. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCABU1427999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d92851235c19b80ec1ebfd8af98d01ef55f757b57c0ca19e3bdcbbd93e9ce1a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCABU1428001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54850b0cbc13abb097f6e0118f8bcad0a0423c7534651989b06cc142746cbf7. 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/TCABU1428016.