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 0x1853882ce635f84dde50bed271a528000e99b12601013609b4a4c71f610500f3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a844e96-dbe5-460c-9e85-c47defce8f65.json and https://artists.proofprofile.net/proofs/artist/6a844e96-dbe5-460c-9e85-c47defce8f65.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 0x16a04a201a8885acfe4aed13a7c06571023d998d30e43f9017787b3f0489745f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/MXUM72301626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c1216e3beda92450f380d7a44e02f92a3016311235d7401bdfe85641824fa9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/MXUM72301664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f073e824a9e650564f8c36699fa44b304b0e0a3f1a1e971a601816800850a2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/MXUM72301687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d19ac8e423a025f370403bc4cd9e3198c3530c2bdf39cb7e08e9a5e1795aa4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/MXUM72301706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a04a201a8885acfe4aed13a7c06571023d998d30e43f9017787b3f0489745f. 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/MXUM72301626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065b8ae499e426e4abdf11c90114e01a1f61e51d7142f96a0f593a8b03aaa8fb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/MXUM72301701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d19ac8e423a025f370403bc4cd9e3198c3530c2bdf39cb7e08e9a5e1795aa4. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/MXUM72301706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f7873957c0cfe4948691b034e5f6fc161c3f1943a6a443b94df10476421593. 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/MXUM72301699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c1216e3beda92450f380d7a44e02f92a3016311235d7401bdfe85641824fa9. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/MXUM72301664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e970ca699dc33bf3b3de34ca2d5af11106c7b4c4069331ec46febaf12bd4fb1. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T11:00:09Z), 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/MXUM72301632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e970ca699dc33bf3b3de34ca2d5af11106c7b4c4069331ec46febaf12bd4fb1. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/MXUM72301632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbaa3c80c330d65beba30c9e12c403fd918e02b385511f2849b901faa702498. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/MXUM72401781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2545b919c187c6098433e132e458007c31cbaab46abc18930a95c7b714d626. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/MXUM72401782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d3355f4d01bc6ac98225f6a67d8b0c57157422aa69daef60409b6e73f5c01c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/MXUM72401819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa468dda5e8008384c183a26665b81acb300468ff94d84e656094a4db03d85b40. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/MXUM72401815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2545b919c187c6098433e132e458007c31cbaab46abc18930a95c7b714d626. 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/MXUM72401782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5338d70d611943e355ae7a23fd4392805c5d4f7104579faa1c6e793d7f46ad00. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/MXUM72401818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa468dda5e8008384c183a26665b81acb300468ff94d84e656094a4db03d85b40. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/MXUM72401815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bd03d3c31940c0cb98735c5158cfb7ee8990f8e3a5306bb731808bc50f98a4. 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/MXUM72401825.