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 0x040a63cee31adb3e493a446c9dc8de20ff4522e52cfa929d4c8bd42fad2e2ea8. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/decff540-7dcf-4b0b-9755-f452933242f5.json and https://artists.proofprofile.net/proofs/artist/decff540-7dcf-4b0b-9755-f452933242f5.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 0xd682418c5339b62897b1834e9b00b8c2881c3bd8fe273222611c967fd43db1ad. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/QZMHK2370230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6bfa676abdd3e0ff8bb76591f4859c67d387efef9a332f66ba150d8047edfa. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:10:05Z), 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/US83Z1780981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d924a2446e03e568dd1eeef67f9706baf7902facc2b45804e2ca3b8f2215df. 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/UKLVE2201342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6e2c1ad4d27fd6a6f6048d8dca2827a9504f7223784f2f4806b749880b86a1. 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/DEDH72300013.
Les voies des fleuves indiens - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d471abc2d415728a495f434589faa6d0aefa1170f52dd27127f8f534f74346b. 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/FR10S2370863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc78c9a8e751829e36da69b59455c6d634b99ef446816c9c1ab9a87aae4f71bf. 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/DEXO62281253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05efc057a9e74e509cc5a076d7d4db38cb353b897454dfeb831c825a247dfad. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:30:43Z), 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/USLZJ2376373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74051919013eb2145914c14f836cb5a452f3ff7efa36bd6fec7f61e056ea27ec. 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/USLZJ2376387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9c059beb8b11c6749f449861685c55a5d94e93fb947223304a314f54e23b2f. 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/USLZJ2376388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0481fec4497aceca838902001aa709fbec6f356062ad9bc3b6b832ef3a0e317f. 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/USLZJ2376390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4637e296e8e07e15a835cdd670a0d6e5eaaeadb3610aca894c33c480a51e60. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DEBE71900649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a600d6b4cd9383662c87aac1b6601b775c7cf2db599c6ce666e817757bf582. 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/DEBE71900653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef4170117c19e3acb388050b239a7843a52cad87e91f4f10b6967f5f4a02431. 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/DEEC33501705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3130503baf4c1ae297f38606dcd02ad92f0a618e3363fd7d73fa5a626cb4be9b. 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/DEEC33501701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef4170117c19e3acb388050b239a7843a52cad87e91f4f10b6967f5f4a02431. 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/DEEC33501705.