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 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 0x6063b90069b344b2f3b8f0f68d57be8da2f0620bdf91747979ce744417db923f. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b104a6cd-2669-4dc6-b187-77b67466b893.json and https://artists.proofprofile.net/proofs/artist/b104a6cd-2669-4dc6-b187-77b67466b893.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 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 0x08caba9957dcb977a2cc54011b9fe66fc8a82a9279e43089915d939b6aaac1b7. 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/TCAFA2011353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3d761939c45a647db54f5e8c82c1044438ad1a30ca7f9fdbb669f8cea16baa. 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/TCAFA2011356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0af5e2a42a1e932db24328cd834281135a4ea218a3fdede4c0a0b2d176c2ad3. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/TCAFA2011364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143e32937d0984fd6249318dc6281209513ec887f83a8ce5e5cb5c4a81011329. 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/TCAFA2011370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb839ac5f094247082ec14f30c28c29ae5629c3423363560acdb15a093e76ae4f. 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/TCAFA2011376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1243137ad701ac8c0209e4f4264d9419a8c42ec3c0859900478c6a71bab459b5. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/TCAFA2011389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e2b58c38cfc4b9918e130d08708925d96281ca9d4c9168cdd2b53562657131. 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/TCAFA2011400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2c4920f51204240f2cb6103b927321f76d5aea61d300c67ca38ef9d834dfaf. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TCAFA2011407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eaa957c176037811ab952c13bdc96958074add906b5cb60ac2d0bbc1210e2db. 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/TCAFA2011417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c127f7172dcdceb1033a9ef33156966365157d23a4a9b589102e1fcff4c8b8a. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/TCAFA2011424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29db33e0818f393a9b52712d1a76e4494353fef937eee41072548320579bbe02. 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/TCAFA2011448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcdf805547160e3ee28bcec2d2b1c14ec2867da4e13f24883a0b143f1ff4b29. 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/CAE861810001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54b0166e2b4fd0e3d9d03d7d6efe608a6fa8c5acef631c1f7bd5c4a510144b9. 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/CAE861810002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b5984659d7a8fa1c299cec7d7c87159d45408b7f395767fd4be935fa8091e2. 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/CAE861810003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc875acb74154934d5dafdff4ecf1bac5ed376a35165cc25693353dfcdf51f0. 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/CAE861810004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7e73d38946ab14166c089a302d0d3db0a468a9bfce90657acab00d99fecc43. 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/CAE861800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0464cc51453f0a5ce4b03b2cc76ba5d783f4632438a92dcd9d60b537bf3af946. 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/CAE861810005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6b611df385ce9e04ff6c87d442f83b3bb40b0f5536f22815d270c164e0d6f5. 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/CAE861810006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cce7395473bd5426a7458b70540c1b20cf824965f99575e733d0a618c46b7e. 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/CAE861800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9fd6ca176ff366bf95978496115def6c82a38d600b19a6299ede93b9489d80. 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/CAE861810007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416304963f3a179603143a312bca36fa2a01a19cdeb6fbbbacd64446fe9457ae. 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/CAE861810008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa648596f59e7f883c68ea1dd8256e623b26e55ba96bf99d7944b43f771c18265. 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/CAE861810009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559ae203f2e00e400c70e3f877f38083da90837791813ae5e90845ca846542ce. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/CAE861810010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55a70f87e786399bbabc223ae1cd98332e59d70489babc890a162b73545b48f. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/CAE861800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db10b0d644f98158e9e17a8fd223dd593e0111ed59935da3d62afc4f1ae5743. 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/CAE861810011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c97e9a7277895c0417bc15d112d214d8a5d8cdb3fb8d14393b9b5fd8eb2b05. 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/CA3SQ0900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823620273b1ff4ee6e4ebf2e725ec404831ead630eaa3036efa7ee3eedb2d4b6. 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/CA3SQ0900004.
I'm On Fire (feat. Maiko Watson & Len Bowen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95aad923d79d5dff3e8e4f8a0cb383f3e20170cf0e81fccdba56bfa4203df2e1. 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/CA3SQ0900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bb38e4ef524a57449e956e06f8ab295a4a7c735250af217f9d66b16b06b009. 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/CA3SQ0900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba1e5ffc07a42bb6d53ce75f9a16856c1d238e9415c7dda04a0e8723b7d07ee. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/CA3SQ0900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7231d71bcee5ffddc8e4fcd2b2b401c722ef8bb7b709550f95ceeb1cc6f7afc. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/QM24S1704286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfdf1c72cceaf4019a35f81824af2f47960c72911bdcd89d7685be7db884b2b. 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/QM24S1704287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eba36ef890b6079844f7e35c169b67584ab0c7d15bc603716ca43d47df38190. 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/QM24S1704288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160b55aff36bb7d97ee180165b4ea98cf7e7cd03193f1e4d15fbfc35e1c1cf07. 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/QM24S1704291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93f89f97f64969ee3931d1db88ceb4c44de359eab34deb6b55e3f7800250169. 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/QM24S1704292.
Peace (feat. Len Bowen & Dawn Pemberton)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855055852f664e4384dc428379845805cb8f99854807130ff6703bd24b83d6b2. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/CA2782000060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb795231a52c5b3702cf1235fe71f1fdbd4fb8398081da362dab543cca5dc9de9. 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/CA2782000036.
Modern Thunder (European Deluxe Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53c226289ee27b8505845cd8a2b9f2d11a1781ecdb87c1e4c0cf46cf068ea5b. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/CA3SQ1300008.