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 0x751238008cc3c2e2bcbf6888cb3336a0b927ffd133f96564e4995f457a58fea8. 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/58034fad-45f5-4320-b00f-00ba9b3f1091.json and https://artists.proofprofile.net/proofs/artist/58034fad-45f5-4320-b00f-00ba9b3f1091.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 0x63f3efbc504d77120abdf1ec28887b8146d01538e3d77f6d0d759dabb3f058cf. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:43:34Z), 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/UK56X1200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f3efbc504d77120abdf1ec28887b8146d01538e3d77f6d0d759dabb3f058cf. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/UK56X1200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ea35c575c5a04a8f201b7c4a7b2b640441b15ccd3fe3726cd8597880d3b921. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/UK56X1300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4551aa9f0c84e7fcc38d1d113bcf596eab4492b0c311bc4c8ccc31a49432047. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/UK56X1300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ea35c575c5a04a8f201b7c4a7b2b640441b15ccd3fe3726cd8597880d3b921. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/UK56X1300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a901de98219f9b45ebb9d216d2db3964a92886d365eb117b156c7502e74ed91. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/UK56X1300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4551aa9f0c84e7fcc38d1d113bcf596eab4492b0c311bc4c8ccc31a49432047. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/UK56X1300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9916ad29caea20c8ee4007f5284e84a0353e9eaa5ef43735af40c290d2db9973. 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/UK56X1300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c3affc33b79a30f006fb5a25010c4d63b5a91a7572e9fe78b78d540d15108d. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/UK56X1300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65585d05843ba6388d4637558c1f207b6dce716b02064557539985b7852edab6. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/UK56X1300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86021bc169a93c19a824daaf03f221073d689224e0b70c762681a6d855f062e6. 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/UK56X1300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff80357d2ae2025df8ba7cf9c986427ff6ece8baf31835b816ccb40bef3ab14d. 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/UK56X1300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9916ad29caea20c8ee4007f5284e84a0353e9eaa5ef43735af40c290d2db9973. 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/UK56X1300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86021bc169a93c19a824daaf03f221073d689224e0b70c762681a6d855f062e6. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:54:42Z), 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/UK56X1300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff80357d2ae2025df8ba7cf9c986427ff6ece8baf31835b816ccb40bef3ab14d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UK56X1300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82ead15e403a63896792149a2d57fcab26d407e58d5c1e883705ea5098a722e. 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/UK56X1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ae031a78900ec4142f4b7527b816b698930f6533d71ea6863b649a78ab2dde. 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/UK56X1700031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82ead15e403a63896792149a2d57fcab26d407e58d5c1e883705ea5098a722e. 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/UK56X1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6908505633d94e0690c456507bd82378d349beb9b23c0fe989065234c27f0ee3. 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/UK56X1700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ae031a78900ec4142f4b7527b816b698930f6533d71ea6863b649a78ab2dde. 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/UK56X1700031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc937faa04467ab27f98a7546255ff25d1b9669a5a105b2efb89260535bb2ac. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/UKGCZ2000077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc937faa04467ab27f98a7546255ff25d1b9669a5a105b2efb89260535bb2ac. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/UKGCZ2000077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966adc3ebd2670f5a8df6dbb431f5508038729bfd30eaa085aaab7fb227a8e02. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/UKGCZ2000086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f40db5b2b85594fcc43fef9827bebf1fa12b04658046ec8ec7730db512486cc. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:23:00Z), 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/UKGCZ2000079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3791fe0bd28f98f3fbf3b284aadbf5096026a32763595dffe57225e1002951b. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/UKGCZ2100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d834847c6f797a5f4af6d86e243744a38a44021d14a23383fabb0e131d8988. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/UKGCZ2100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c185fb8747c9fdb72de3965cdadfad07b4d55cfd99ef77bb3eb5d7866bfaac4. 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/UKGCZ2100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304644cd1f35027b57093fbca9596f41f96b15131787544b5c1361070f38e147. 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/UKGCZ2100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c185fb8747c9fdb72de3965cdadfad07b4d55cfd99ef77bb3eb5d7866bfaac4. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:36:33Z), 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/UKGCZ2100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef0cc90a5124ccc2595a21c439b4aa2545226069e008175a81cf3568ed09757. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/UKGCZ2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5055709e601be84e8c4ed76820cdb5cb03fdef98652a084a2434cced14d27226. 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/CA6D21000256.