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 0xc229f6e73ead101def40f945772fb04893895c498997b9e29546559a37cad021. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/352481eb-fd84-4e9d-bef8-0eaf10c9acef.json and https://artists.proofprofile.net/proofs/artist/352481eb-fd84-4e9d-bef8-0eaf10c9acef.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 0xc38e96993895c03b267503ac28863f2cae8b238343e2d71491939aa5740ef850. 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/DEAX11904004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a77b1b7bea1bc1b3ba2db9860b8d362032c25aeebcaa0ddc4f6a28f993760c. 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/NLD681903540.
Palameo (Klunsh Remix) / Heavy Lights (Len Walker Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89847b7ba7e80603fbf4d6649d69ccd0e6a73a049916bbb22fee17023c0060cc. 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/CH3131915231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc1c38e98178d8b7e6199d46574b7b0fc0d8d57679479c8a2b5ccc800d8a8d1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKQU2119307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b3661887fc7da3e8468856428cb5b680838e5a61844f691b5592922fcd0d3c. 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/GBKQU2119309.
All The Giants Are Sleeping - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbeef0360bb921d0470dc5a4476d1709cb61a8246e11319b2bb50b4cd4e10b58. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2119310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708d8f54eb71cc91ad5a8bcd12f66168e59f17abe7c3f4124fd6fe6f89c91319. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBKQU2119306.
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 0xf51daba08a9fa4ea3934e3525b2e9e3c76cb0b02ba74a85726e530a951268299. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:38:27Z), 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/TCAGF2242220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635f34bdff5b966de24593b0d026657e22a5d621a20ac27655abfe0e5bdd1cf4. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/CH3132217003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e45b68e7e4a3b487766239f970d5c3b2c90713480fb772e78736f13903f75e7. 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/CH3132318648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67910eda226f912b1379d82686491bd69204d0a261b1f517cc6866a9059cbe25. 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/CH3132318650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f277f97fca88a35aa1a79d4567f5aa57b90b5d5725f65d4db6b0438f3be0684. 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/GBLV62215142.
Metawave - Alex Breitling Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68161177c43a9fd8405bae98d23d597864091f2515a009c8a4323ae8e0492df2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLV62215143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed834ae2f8998ff1efe124235b10b4a6ee3c6d172ac5bbeb83dccc0775e78967. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBKQU2095305.
Songspire in Ibiza 2024 (Mixed by Robilardo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487dd1d47f0eb261f2b6bb3bfb84df19eeedbdaeb6e70db0e23588ea8fe8f377. 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/NLD682401954.
Colorscapes Volume Four - Mixed by PRAANA, Matt Fax and Estiva
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32084eab6174d515c4c64a8f6ae3c4f72cfc3444ccee1f1b4dc4d3caab014f5e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBKQU2282594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1611d1b102fa1e9ac134eb7a6a91307e763db6110cfaf37afd61dfb222730a07. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/NLD682402559.