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 0xfa3311d2961509294c9c0e04f065e7a51189003d2200aa1206e5c5b2e35cf9aa. 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/0a323b4d-1d85-493e-bc89-ee135ba93db2.json and https://artists.proofprofile.net/proofs/artist/0a323b4d-1d85-493e-bc89-ee135ba93db2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fast Clackmannanshire River Devon Part 1
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 0x5003c252e5dac80969ee07252295c8f30dbc7ba46caa3c6d40dfb658a871817a. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USX9P2321893.
Winter Clackmannanshire River Devon Part 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1186fb3e4b87d1dcf0baa34ae39824f7e77331161828e30833627bf03ba28976. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USX9P2321896.
Winter Clackmannanshire River Devon Part 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bce4fddc3d2f0073da86dbae5229032fd1b4a683432d071d87040fc1b67502. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/USX9P2321897.
Winter Clackmannanshire River Devon Part 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3992f8ef856e761b9373068a794cc90762ede740d46fe555f3ffa4d9242b82. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/USX9P2321898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff5a28c2a6198b8fd191d5cd92fb4471099f41d3fee7093877be17c7628cd34. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/USX9P2321899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d458ea8c6fc0b3221ef20001955f56f77ab502361dc0b64694f1fa15d8817a3. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/USX9P2321901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029db8f160ecb464aa10e96d81262fc5176a1d8e9da81b28f2d10b0aa73cff1c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USX9P2322008.
Relaxing Water Sounds from Around the Uk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9f2a324ebadf1e7ab449204b48c12b27876a727c9f0eec3f35717ff5dc19e2. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/USX9P2468352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c29bd3a87630af133acaa63f60c06b3339428bfcf78017fe7ca369596936172. 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/USX9P2468353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55d1ae40fdff3d85e932bb6f569081eb99de3fea6b71dbb6c4f6850eff3c8c6. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/USX9P2468354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffdebe90979bdc9c31f8e70649bac640121e89f5d1e907da1fad60bac42ede8. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/USX9P2468356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f3934477762d7c8354991401693aa25dfb4047ed143d1e1927e1991b0673f6. 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/USX9P2468358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206f9855bd7bb8238108f009c79be0ebd84bcf4e71c2bad25ce61a1e59dd6625. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/USX9P2468362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff50937c31ccb4cb466916a0e2ad681c59bad731c92d9830fec2152dfecdfe7. 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/USX9P2468363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac875daba6cec113cde902485735c0133ce2b0b3048046cfccb352e908ac306. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/USX9P2468365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30b7eb18c54e8e80b90c45e3ff57c2d487847dd377e23be8121b9592f9048bd. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USX9P2468366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337010c9678a82b8f9ca1f1e0ceba10a17bcd1964b0bcc96f29d3309223b4fba. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USX9P2468367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd797938af82cda2224e743956636f89e3eb58b422854d2520d254227c94bcde. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USX9P2468373.