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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65607968065544aa5cdd327e6dc838cf4ee5f0a1973101cb04bbedc53d38a989. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e71c20df-0d76-4637-827c-d0bf780efbf3.json and https://artists.proofprofile.net/proofs/artist/e71c20df-0d76-4637-827c-d0bf780efbf3.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 0xe98857cc3f521305bd4ea8bd6079a3d5e0dc068404f2a164a4c890647bb6dc80. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/USHM81796711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0366c9a7c6b67ca53ad34afc42c57f30307e617dcbe64636477bd28221cb15. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/GBKPL1942543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1407422583d9bbd5ef824a9a1b101e0102024d6cfda2129f4f4034f683f4095f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZNK52000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28465361a3274b5d7fc5af614c6297677e3b400a30684c081ee61055b033b245. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:42:00Z), 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/QZNK52000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eec6969f803c34f9d51a44fd6e9ea9d05c42218c7d52941b11be95dec7fa065. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/QZNK52000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979a25b2c85a5feaf7f0a3d47f34b21d67e3174ea0db396f8f3a8118cb7b4a4a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLRD52046924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3a7510fdbb0e353724c30e6c43d0e5ddaa44787d32c51138b1266baf8fdc56. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QM5BK1900544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e914fa4997f87ecad1298678ce40a5b5ee564b744e1ed07af616086fb6debee. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM5BK1900545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4785a3db3521af7d7ba7cdf88c43129cb4026d44296ea1e14146d953ace5fb6. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QM5BK1900546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb01684f3875d842ca849b41109c09b89776ee2c379a09fbbf60e7be5131c62. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM5BK1900547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd397c472929465ffbf955550d54c94ff834d1ef13395a9100e30ec91139fa76. 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/QM5BK1900552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5884147fc88b762add9a35a73ed7e94e2f1c24fa48f4f63034494e0261ce57e5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM5BK1900553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39fd1e89191a6afa8e7b0b28fbfcc7aa890274aeade4de45b3957ef8f5ec7ba. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QM5BK1900554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b7ea6cb0e9df82e77b52251de115b6a702950b6c800b6d994f297bd3f09f98. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:49:59Z), 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/QM5BK1900555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3a7510fdbb0e353724c30e6c43d0e5ddaa44787d32c51138b1266baf8fdc56. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:03:07Z), 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/QM5BK1900544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d713fe08532c32072f2ca5cc3d2f1d5c2e51ad93fb05baca5f29ca59c0b89a0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM5BK1900644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e914fa4997f87ecad1298678ce40a5b5ee564b744e1ed07af616086fb6debee. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM5BK1900545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4785a3db3521af7d7ba7cdf88c43129cb4026d44296ea1e14146d953ace5fb6. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:37:14Z), 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/QM5BK1900546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf74c664ac9f74ec5697e2790200350f17c6e2484c83ea56e6fecabc7b33a948. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QM5BK1900646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb01684f3875d842ca849b41109c09b89776ee2c379a09fbbf60e7be5131c62. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM5BK1900547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a3c4ff2e13b5507e5436f0548ff523414f402195a6ee89829c25736cb86796. 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/QM5BK1900548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e29ce1dbe51560cc14a05fc27b1e4451b0b187f7496190635129f58ad715ef. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM5BK1900648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba55f105851a55ce18ebed53f5176e524a47420eb28c84714428a3d8844d6e7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM5BK1900550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e5341ebfcf22c28e8a582fbd2863b94f8fbd59787e353fff7a2535e17dcb3f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM5BK1900649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa453ee95ab6cc641c8208b09dce94d098ab46fb66d40e77145e61d93e5280bd4. 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/GBRKQ2338342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488fbe16aa9c313eedbce201ca7f43389a7151fd8969d8cf04c74ee7b6ac0a76. 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/GBRKQ2366946.