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 0xf08345ec158bbe76165984a9f0f26b2b4c34078c42b5557aeda20d8741237386. 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/6763df8e-61cb-4c7f-a074-8d7c06a7d24d.json and https://artists.proofprofile.net/proofs/artist/6763df8e-61cb-4c7f-a074-8d7c06a7d24d.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 0x27b286711b2e5eb51d1e603de3ad332e277c12cf0fc30d197c54e077840f2f57. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/DEGL61700311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b192a6baa02cb373baedb6007cb30b7ecb133bb3de7b1d9b5283d1880630ce. 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/GB94U1700268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c4c11cf8cac62f64fb2a0be014544792dfa996b27b38c45a1d57a5df3d8af3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEGL61800060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083dcf7d14fedcf5fc1b029ded475d707d4efb0f2b2e0b2a3ffc939ead484436. 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/DEY471881152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2da4fdb32720c7922b435fcdeb56a3ccf44bfba7be1cc87f0623fd349ce31e. 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/DEDH71900037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931a045dc0a5ef69c1c952a11a415bb515b73e3aea3b42c653381fb3a366b6ff. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DEPX41900335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455a1d4f1b4fdb896c0cbd4816a4c3969c7cc1d7c75ad16cc8ef1c44afa16f26. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/DEY472174868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f7fe28fae4339bc59b1b8d839eb1ad063d380cde1c7c971e44de0561f8c871. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:59:04Z), 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/DEY472177613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c10bfa2b3b74b2965a20e85ad652ea487bd5d914b6c31bf6ea25afe979777c4. 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/DETO32200211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe079a980907c74050935c575226a9c64e40084507d5acf1e9035f0d6c20234ec. 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/DETO32200210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b007ad67ef42cde529c650aaff4329de70655b55dae4207594b199fd53e5c3c. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:42:39Z), 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/DEY472374034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8212d2bde44f906f2c2affe2fc8ddc18db133bf483b67031d3bc7ec5c8c5af. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/DETO32300399.
Marimba (Robag Wruhme Dimona Negeff NB Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9892533953a5203d460bbef4aa3b72d64025449bd4f2bbb84e5b68c95b7905ef. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/DEY472471672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3fac44f18a3957038a1ff149c4a1c56d036980ccdd639b7843ebce2195465f. 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/DEPI82417374.
Searching Places (Oliver Koletzki Remix)
Global Underground: Nubreed 10 - Oliver Schories/Unmixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b192a6baa02cb373baedb6007cb30b7ecb133bb3de7b1d9b5283d1880630ce. 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/GB94U1700268.
Global Underground #43: Joris Voorn - Rotterdam (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137775dbbcaa3f4d862f97445d82f26dd3996ef20923fa5243ef52583e61d5ab. 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/GBHFW2000074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1bb6c08c0a298ec6a45ca784fd88b85a2e2e7d095ffc7252552531063ad9c3. 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/US83Z1915863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5932223fc05157c25681fb14ebe3531f9ef5046132c148b2be3f13a98d7a4f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US83Z1915864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6386f40d92dcb2afbb1ef68b4981951bf3b765e4ffabcde750735f46ddae99. 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/US83Z1915866.
Everything Is Right - Alternative Mix (Mixed)
Movement Vol. 3 (Live from Mount Agung, Bali)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52cfd4e0af5e423a4be01f85d40b2ae22106022c3e3c41935ecfef8b7fd989f. 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/GBEWA2500409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270f3a58ba0b9e879c21dcb850460bc547e0a0ad41bb8c442806e6dc939f3048. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBHFW1700107.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d4d397b373a9f9226c6cab949ece8ed4d8e21bc8f6ee9ceb03a85ca7ced4fd. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/GB5KW2003513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f76eb863c8a895c7c07b50abc73c41559e0fee2d7f23a7a795b9764ca59f4a9. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/US83Z1915865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d00c93aee98058dd8d4a45bc2a8d441fd0cfecfacc6658126f394896ac7219. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/US83Z2022377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7235d08bd42ac51306937a65c683c97b85c425a112ce0be9e385d5c0bb590e9. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEY471880563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fde73af21c9922e9ecb80c84bedf5dd447adf2d375d1ea654b99cd9b9c858cf. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GBHFW2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458565d22f330c28db7f85160e58a182a0b34c31782f3e438f6d80c2db3cfe58. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/GBPS62200078.