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 0x3b31086cf42d44c2ef0f1074c3160416ba8cbf0d724d07578c5251fd2c5f3269. 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/bf2b5d44-9b8a-4951-9a11-18ec36584123.json and https://artists.proofprofile.net/proofs/artist/bf2b5d44-9b8a-4951-9a11-18ec36584123.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sons De La Nuit: Sons De Grillons Pour Dormir
Sons De Cricket (Bouclables, Sans Fondu)
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 0xc5ccebb67c428486227b3eeaa11a0a243b2769548521586988203f1f0ad7bfda. 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/PL50G2102460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e2d996fe13bc870fb4cf30611712628e3e2d2b0d91c7349bf9889e774bcebd. 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/PL50G2102461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ef494864a5bdb80434ae77903410e084d2af994f18555d6b64fe8af30e10d8. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/PL50G2102463.
Grillons De Nuit Pour Dormir (Bouclables, Sans Fondu)
Sons Naturels De Grillons (Bouclables, Sans Fondu)
Sons Nocturnes, Insectes Nocturnes (Bouclables)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3794404b188492bf446899a0aceabb16a186e297ca8f018b1a6eee96c21035. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:17:21Z), 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/PL50G2206236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6da2554a68617a82f2ece487bc012cae34bcde6f6c1217d3bf2b194be93449f. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/PL50G2206237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348d9297f8771b9948c6ad0135c572d2f73dc27079b36195ef72976d093bb950. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:52:00Z), 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/PL50G2206239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e46f8f87435cb3dc56b5b1f3f391ef2afb447e16d29929451699e462168847. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/PL50G2206241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2b4797f2489fab7274a3127bfb9a680e7c243610380f3e0ce106064accf88c. 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/PL50G2206427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b75ce97ff26fb61e4fe5bcb5f6b33dbdf38e92bc7ad9e1dfbb918b9c37f3998. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:33:49Z), 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/PL50G2206428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855bd056f75ef7c666b988a39a93f79cbca814bc60dace716b80b5ec0ec1a18f. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:02:33Z), 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/PL50G2206429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c5d277d21e5d40694fedc917a517d8b0edb9e82a31c80fcec6274845e41ef0. 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/PL50G2206430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac638fb666cfd1c6d25b9b0050057ed104e52592bfa409721e3a56ec9def45c. 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/PL50G2206431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17ae821c2b4073bb981ca9b44f23c22d9a985896b74337f57051210307e0585. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/PL50G2206432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a783a92eab089815ca9bbb3cd4498435856fb8099ad0c505941dccae7ea3f43. 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/PL50G2206433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1c43b844c1120225f32bdb1034ba26423388a7399a9d994885cfb8860f77d1. 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/PL50G2206434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ccebb67c428486227b3eeaa11a0a243b2769548521586988203f1f0ad7bfda. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/PL50G2102460.