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 0xf35d2f8d375db01c95c66b9ecfbf05425831f20b8cddd577069cc34c554ed5b7. 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/1b809a7b-dd86-4c1e-bf0b-f10db478c7a2.json and https://artists.proofprofile.net/proofs/artist/1b809a7b-dd86-4c1e-bf0b-f10db478c7a2.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 0x9bd73a8475dd9b5514c09ad4eb4b65c4568db184b80a7d3b68eb90bb1c2f581b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAGI2251862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ebf7785ea7f0008197dcfdec12896a9ae53bfc361f31295269921d4824af69. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/TCAGM2294022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07168b0e095f5befe230fec85128bc28751e9c972d1e8c489d54bd8916f81fe4. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCAGN2206584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2167dcf66393eaf46ed16820463875e9e4f322d8ff5b3940b05bbe7d827fe298. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAGM2254729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13484b368902cce3db181a18d3854b383eaada99ae878a045a4271385d97590. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/TCAGN2206467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94af840690bc905c6c90499e1cb636553cc62050aea117fa9bf40e3fbae35d82. 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/TCAGN2209268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8d2a74f2e0ace72486fce83c959b75ecdf028fa3c1c1b9e3922175a0f3fcab. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM6DC1885797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e5a05bda4a0a49d8faadf122e883124309c0e247e8a5da7f5ea37894ffec42. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ9QQ2200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3520cc123212cb423d7add4ef1bc616e0fcafc585eb9046285bae7f629ae619. 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/US3DF1813922.
Al Mal Tiempo Buena Cara (feat. Jesus Ojeda)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50ad508ddf24e78be76a3b2a0b867383b6bd49631e0fd3bf88b7e1c2b0f668c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USCGJ1913799.