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 0xe3eceac30448f17c09a8203b43d270f8412d253986029bd0e6b82f7ff61cf059. 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/af95acb7-d6d9-4b1a-8e19-70555829307c.json and https://artists.proofprofile.net/proofs/artist/af95acb7-d6d9-4b1a-8e19-70555829307c.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 0x17ef3fb8f89c8eeff253a1005009a28ab0097bd9f53613f13bfc3fb0d0c92755. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPTK09181111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d367be3fa48e71be68246897b5953cabf070c03b0d0908d7bfc2fa9925a699. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/JPTK09181112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9f8b4020a87661602185e0b49ccbfa5aa6b968f1ed406b8f7e8f950fe7c244. 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/JPTK09080612.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9eb37f66bce017a46d004a197e924665a5551d087285396a7e6b5fa1d5f1a90. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPTK09080601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f475f99973058fb8f6dac7f9305d2cd0e1e4af346edaca811359c4c708631c. 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/JPTK09080602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e610514f1b19fb260fc53b540144144be264581e71f70a2fd50a6e8c4618dcd. 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/JPTK09080609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3390c0f3f951502f30728ff00fdb54b432ac6b80d21df8f558a57f45248a794. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/ARQIW2412796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4b5267811f86dc9ab3f7e6bcb16e69231c072d0c7dbfb9a3857555951d386f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ARQIW2412797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd207bf03d977dc037f6ba824f1836744ff1401dd3d7ee9a4ed47fb62f2e60c. 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/ARQIW2415803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9416224dee84b5fc0bad68d32e96ec40f8cd4d2516fb58e1c97d1a9259d750c. 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/ARQIW2415804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049a0cdee9ec865f2e200ba0ed3ee7885fb951e0f06e1364c62592f558b89781. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:57:49Z), 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/ARQIW2415805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e093c0ecc68f255dc7d4de7f53dd7e26a29e74b0f8d3daf887852810529a39. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ARQIW2417039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983ff8b136177ade1831ca6601142b110a7cb61308f8574602773fc3ec697458. 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/ARQIW2417040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6ec8de911eedef94b602e65b703ed9fd2a136ef3c0d92be1edfb06a25c8c85. 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/ARQIW2417042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57d1fc718c7d00b70f483baa36e3aba1990eff4e21c383fa11af13e43f0bc94. 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/ARQIW2500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19eb61bf2344f2e6ccd31ca9fbd8f3a7813565ea06628f363e3704ba6eea9ca1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GX3Q92577282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c107a448dbde38ec78fdb6563a87e4ab4cdb69946ad9aeaf83283f4bc979156. 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/GX3Q92577284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b313df61d9c9a113a3129927599fd218a0b293c2356583da912fa3094221fea. 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/GX3Q92577285.