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 0xad0915beec200970622012f5b7de5658fe7cccbf535964dc201ab2b29a2abced. 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/f1018f8f-c9b0-44fa-acee-e6e3d6da46da.json and https://artists.proofprofile.net/proofs/artist/f1018f8f-c9b0-44fa-acee-e6e3d6da46da.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 0x6e28ae5fdce0b5b6f1ccf80962f6006be9ea841a172953bc1c472fdb7fccd0ed. 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/QZW9M2263074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03e7c96e14b7135ae17bf989abd486a09ee70d4e1f300ca18349c4ceba5faec. 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/QZW9M2263078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2f535585b065bde3c388a517b60cfe44405a1d13db276acc06bc4a9e6fa248. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZW9M2263079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9870ff279e81442839066aec9e480bd739404b9580620c56e9f789ce6063ae94. 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/QZW9M2263077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa7e70d91ceeef68982eb21f9517218f9ff51c2dc78c0493782e69d1653f821. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CLPP22300137.
Chapetona (Francisco Allendes & Pablito Pesadilla Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd55574b3bd5cf0ae2f4504d776f9b525b3c07f3b4cf0150e71a252c4b0e1158. 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/CLA3H2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3400ba9a20775d5a8aa5ddad36db2a9eb0ef33dc8f5fcdfdbca88c8a002b7d. 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/QZ5AB2309030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2cd921c55d14290ac9a2f2f662787ed378cae10f9fcff99dbf549a4e238b64. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM4TW2212956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08f79a0defb684790b7e4bdb100c627ff839eab9b31d8818738694417a1b967. 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/QMFMF2107497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec66b391fbfe4a35a413186e7e244702588b797a0407bf4bbfe4a4c6f8a9c89. 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/QZNJV2433065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a487d6a338fa8dd28ec379582d35223e579d0b4509581d5e84e1c69ca0ce53. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CLA3H2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbed91ea29665e7b479859e6138e019bdccf8b6d74f2ab91ce0f9800c9945a2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CLA3H2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af7203c5d8366774c09c63bfcc8e852f49c9efce214d57d8e707219143e70a3. 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/CLA3H2400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87806e034e00bfffca5545ad8370233f5b129934f426b7ffdb3f7855d3d145b0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CLA3H2400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e45ef83b4f81b8e783b127bad82c6267bfbe7d0941817517c9c4ccecb97d037. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CLA3H2400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcc7d660510c9efc3b72cfc2de842a15f715b36f6fff42cb85206f837bcc7c9. 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/CLA3H2400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e03cd355ee7202ac12bf192902cd25dcd462045611d620720e64702661f194. 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/CLA3H2400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3728b8d06b2a2c3ee69e5008f0d5093d92206671ee23dc5db7634e01573fe7f9. 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/QZGLM2507684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af7203c5d8366774c09c63bfcc8e852f49c9efce214d57d8e707219143e70a3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CLA3H2400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb497cda2d72e7a18a1681b709cc8078dd4738caf339b4773f3a69da95c9ccb11. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AR5UH2400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7b17808cfa657acff41650b20ad4a609c792c8d93309377be476a34371702e. 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/QZ5AB2485226.