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 0x7a6c8a43662698878f3b0e3c64eb348895f02aecff2629f5edbb9b5f525cf85b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/116e7709-e3ea-4331-abda-5385e4d457cc.json and https://artists.proofprofile.net/proofs/artist/116e7709-e3ea-4331-abda-5385e4d457cc.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 0x27c6d95a3c4eeb3ddecd679cc22565e17653560c29f6adfe34b92935b6292ec9. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T01:58:41Z), 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/NLGM11807598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f5dd15743234580390fa0896246e235016a0d1aa55609ac78179a12482e692. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NLGM11807611.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247627c6b1844b76b54ac1aa86dd97691b80b1d4a4ea462bbf9eec7ac22fa35d. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:58:48Z), 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/NLGM11809043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9169c82856eb870e16099272d770ed61c644ed4db2d252bd65d57543e65a9bd1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/NLGM11809044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644ee216522478ffa86f134b47c04611444ceef3d1063133bdf1b036bb97cbc7. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/NLGM11809045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3425fb7d5af47efd31d9cbdd6774097fbba43917d5fb242980dd771cc966bc5. 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/NLGM11809046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910f74a88de35cfdb7143f4f7f599f06383fedac3198d0f65b6b74762a7760df. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:49:49Z), 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/NLGM11809041.
Sons De La Pluie Pour Dormir Profondément
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002d6ce5f03cd1375db088288ef803b32a3562b11d5f7eda0efc56d8e8f1f582. 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/NLGM11815082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c535b14821221b7c4f32d739caa9ada571534b857c2d91999b00e6b094051d. 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/NLGM11815083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29358f4b0c88a063967ccff90ef430ac4f5122ba5b15eb543ef578d7f2cc576. 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/NLGM11815084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457390e268ebac1cf1433b5ec6462566e2139143a0ecced0f386e17890ed5170. 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/NLGM11815085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94012f156aae4d94c42574b32f9cfbfc6e7a4e5a4848269274f17893fa72eea. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/NLGM11815086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6546c9078cb902cc121b7c649799171d30d7ef78520d53c8c456e4f154826c8e. 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/NLGM11815087.
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