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 0xd463f8f3f829f837429d1a44f11ba724f61726779057702f971ecf853c24017d. 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/447ee0cf-7e84-4828-a2ef-d9982a4cf295.json and https://artists.proofprofile.net/proofs/artist/447ee0cf-7e84-4828-a2ef-d9982a4cf295.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 0x97a19da6be4c017b1e07f3adf2dd7c8dd68ad198eabae7cfe7a1cdbe0b2e2416. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM7282025747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8caf4d63a8310509f84e184db9d7a06724f39f04ca379cc1038d129ee00b8b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QMBZ92019330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d26f9c3ceac81cd13829712c2e881cf049dd6b9e042f1f220b6899d624d7a55. 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/QM4TW2169815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2abfcf3bebd9a33c39e8074731d2d62045ee3e62144de6b201a4f0ae27b6a4. 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/QM4TW2259043.
Las Cosas Que Me Cuestan los Días Que Estoy Triste
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91677268328db4187d6fc021ef0e5bc623eff4889459d2277b5f6e2650cedb3. 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/ES71G2500896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91677268328db4187d6fc021ef0e5bc623eff4889459d2277b5f6e2650cedb3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES71G2500896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d55a289be8e5a368026a76e729b21eb25f536dddb8a3755937052a0150d73a. 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/ES71G2420454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfa4f16a090f79648e740417ed1d5c36b3241800e3c56d8b1f9369d71f01a3b. 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/ES71G2425575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6469844fd2d86c2fa2ef29c490a2508aa8830d618f91cecde43533667021c6f. 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/ES71G2501098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd528d59ceb811482c2426147670d323c4bb078de452da4afa29229848a10b658. 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/USY282306416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61fc27a440842f4f37a645059aa54c74887b135ebfe7b804851ebf822149a42. 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/ES71G2413064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc34d0e5751947d475f4d7757e445ac9c36cd6e0de4f875de403cb657779d88d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM4TX2229660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56dbaaef4dcb7797393a84c88cd33cc75372957543d1b11507ab8eba33bded9c. 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/ES71G2501102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbfef205a18047d6fee10e6e9223ab6d56eee24be57a2cfcc1211d49a715fa4. 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/ES71G2501103.
Enamorado de las Consecuencias de Tu Existencia en el Universo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb51ce5eaa4741672226fb53c03617c55c9da790362e754cc39a83c6d06c8e58. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES71G2015683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b3b521a486f7e341857858b16f681054066a4460af734c31556f4fbd3b589c. 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/FR2X42153357.