Toledo most commonly refers to: Toledo, Spain, a city in Spain Province of Toledo, Spain Toledo, Ohio, a city in the United States Toledo may also refer to: Places Belize Toledo District T
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb0915e73689e5f2a22e2f73c8b785b2b8becc4a2dad1dd1bf909cf6e9f68cf. 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/11135d43-d57c-4d5c-8bf0-baf6ad1b3b7f.json and https://artists.proofprofile.net/proofs/artist/11135d43-d57c-4d5c-8bf0-baf6ad1b3b7f.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a05b11846010a113b427f253a033de4bfd1eb83b7c67644478a9faa5a491f2. 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/TCACU1615818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa184191a55d6bfa8465a6e4d92e3415f1e9fc76340b6f8d422321fe076da5f8f. 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/TCACU1615826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c696599f76f545b7ff29f0638eec759f7c2d7fa413e81a7d22cc99fb2be583. 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/TCACU1615845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17001bcddb79f20ae27b04c12bdb139d4ee87cf5531148d54167e360dc40397. 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/TCACT1632086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554065ac74e19638c9852f6cb16142d90d64e1b5ba10ce77f51e7d62ce9a7261. 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/TCAEZ2046815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2e2baa9efcc7ccae2d4a951d2a221b96759326d05b783cf154a2aab210dfbd. 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/TCAEZ2046819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a88358d4a46d62f3f52e870b36bafe84f71f632bdc34501ff2c2504e093246. 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/TCAEZ2046824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d1d8cdbc0bc6d2850a0204aec85182ab55418bc4cc280672807b2348686e42. 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/TCAEZ2046826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecec85b555f81ab9625e20797523cecc41fe0487c2502b9fa2f1e4fadfb2daa. 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/TCAEZ2046835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc0676f281ea9fb0ef044c7a02e9e05bb617bc8d4adc534a4981315706a2d22. 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/TCAEZ2046840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb075fec229c324e2b88669ebce56c830087e887ef414b6d7cd14a3f705c98e8. 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/TCAEZ2046842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a89637297b800abd3695f821ba12377a642d21da35324d7f5eceaeba1ee3dc8. 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/TCAEZ2046846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfc380613c25e33ba368a89a1dce4a1be6367a442fd8dc166c23362f02b7829. 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/TCAEZ2046849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6837cba11a09f3c195e2573d5158482a97f9032e9c075d9e6376a2fdf5766a. 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/TCAEZ2046850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56f46fc871fd0eb1318ddefd03e44818247f633a017d47076acb615e396aaf4. 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/TCAGT2347711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36a245a2d708322e3e8bcc4107bf725f749d185770380c026640383283faaf7. 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/TCAGT2348459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3544235df1a29744c37737b67efca402c6c7c08abf37cf56142ba00cd798c8e6. 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/TCAGT2347677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ec249599372863e1efba2c881655beb7f5d8ad9fa281ba81cc37db6780fbe9. 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/TCAGT2347728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe724ee3bd7deecde543b2497e5905fbb970c1ff1de15f495654d098302d8bbf. 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/TCAGT2348485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc5ce50093fe3999b26ec010d6919f8a077b89b9309936186a29cb8c1eade8a. 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/TCAFI2166223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9861a32ed6ae4f1eaee1c2a5d9bbf74c2894e67b9bb214ec595f927a9fdcabc1. 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/TCAFI2166233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc985041b4b99e987b9316a098a400ec339dba49465c532991f985fa03184cc4c. 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/TCAFI2166279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba7c33b531cf4f9b1831c580de26891d8506bae04adf25635785d05d588430d. 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/CRA312200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dda95c8edad4c3850ce2e697b885df8be9212c109c0b88b3c5820a8c4f6a222. 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/USUYG1135200.