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 0x359bf7e7d6c22080f81a504ca1970f60d868e6b52b0e1d67ef215250b529a8e5. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b0d4a45-33a2-4cc1-931f-27ada8c7649b.json and https://artists.proofprofile.net/proofs/artist/6b0d4a45-33a2-4cc1-931f-27ada8c7649b.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 0x9959ae268eba0d1c316774bd7e0c1b3a63652f2b85287c91d99c16d88a7bc7ca. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/US83Z2350590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a65c73c61476e8d73b17999e20cbfac483ea698c0dd5ab7e92608aa2b818053. 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/GBKQU2127191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea40e5dc4c4d57047af538ea6b83bde0eb10a1c8baa7bdc39c7ec44dbda2cb8. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/US83Z2122711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160d52b740928df424703e27b856cfef22ff8ca3c0a96d30125f28029bfe7520. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/US83Z2122705.
Montreal Madness - Unknown Concept Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95991c1b9be20c9c913c335b1b0ef272c3a161c5c40ac02c86bcc5fff1431bfd. 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/US83Z2122710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcf2f9cbeda25204fc9169182e7e704c15f8bc6dda4fd0566a38e9977161adf. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/US83Z2122702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd9abe1ec15bac119cd940759df4cf3fffd6fe523311010433947b2b7c58467. 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/US83Z2122709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1239da0f12fe621a6bf58d75fec96af7141fcc431fe516813f6c8ce14573944. 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/US83Z2122708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951e1b62c1d754c23a88e44c1ff0db1c3db202a069c81ec0de04c4ed2b510b8e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/US83Z2122706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8071c5574443ab7c093bc3e17781aeb34c6d3db64971d902982822e7793d5162. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/US83Z2122707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414f6b038d7e4f1a88c69d93123fc810c996354c02b84f93aedc9b46a938a7b3. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/US83Z2226302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e8cec54c2c5dddf34581faeba5fcc4857df35e67915055f1ba61703c409ea9. 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/US83Z2226303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb25efda3ea883b89efddf13f406974f0791d71418ae62df33b45a777c7413f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US83Z2226308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f186903e34d808dec7f368595787390211594c5d3a0d109b37eca4b080b4a49. 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/US83Z2226309.
Riots in My Head - Unknown Concept Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc461426bd9b61d1410bf648596d44ecbcbee09106930bfeb9c6657f37c3d17c2. 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/US83Z2350588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a4fc896567c45320b74ce66de3b289600c1818e25f802c61ece02efc5d63e0. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USA2P1927313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cbf2635c9697c54c2e030d12c1e7fc4dbc49490d0112179ed5d1dbd06d3fdf. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USA2P1927314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0efe853bde2b12fb2b1442b0605bf2b5940264e937696f207e7bec629a7453. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USA2P1927315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e4149ce75014115f483efef724bac5359736d244188758283a484138cc8bb6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA2P1927316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1a4301a9594bd0ef391b6f304043a838f501c92dd7e79ea1dddb79ddf30a21. 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/USA2P1927317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1ce3773e146c254fbf2aa95d43023b28e419fbd2cf2f3ed59b089e76d5c57f. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USA2P1927318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bac9d802aa5c68f58946c2caa7880da5ec0585f8a8e4a09b3ec4bd350c39d70. 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/USA2P2345359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8489bb2472fbe2425a6de242c92f4a2def95f83834ecd9fee53a554398621362. 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/USA2P2345360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8f7281f8e6b4c13f42ff765d12efe2b57231b0cdf1400d15921e1ae40248cc. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USA2P2345361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5426562538186f890db01c9d2932f3a9f37f3cafb86289a91f13c7ee322fa635. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USA2P2345362.
The Sound Of Progressive Trance, Vol. 02
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bd6c41bae2651f22971f517bded223be89d755126b2b2f221e9e2665d1ac88. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/GBLV62314136.