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 0x0e023d3a84c9f578b5ac9344a9de99bf9130de7745c266efc8eef4341095c96b. 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/c56acbde-2acb-4ffc-8d80-d2d939550750.json and https://artists.proofprofile.net/proofs/artist/c56acbde-2acb-4ffc-8d80-d2d939550750.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 0x0d1b7ae09bbc67c1566b01aa73257bc7bda92d2ef9f2117598c126b6135a9e1d. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZMEQ2204416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a59bd679cdd200935a1ea773bfc07b5b6f956529d74d78421e92a320b71c99. 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/QMFMG2335069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802b64535a0755b7f71cbb2ef1037faf18a796a5d5cc5e725c70eb6c4733b497. 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/QMFMG2335073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8ac3386a76181fc4dd8395f714e40c9988c8dd363563ba10dd50248a488aa3. 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/QMFMG2335077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9feabca46c805353d02902725cc060417c954e5b8ad7e05450d6ee48f2304a. 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/QMFME2361175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a9d0d17399c396ec72d78ab2a85fa350a448bf67f4786dd22d7f2e55006650. 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/QMDA62386643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f741668df2970611c9c9a8231aad5ccd13db0bcabc70e96d2f6a9845c546858. 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/ES71G2324044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d943a4cde41f87cf03b390c4e03a8a6fd443fb08d4483d26c65345de2c0923. 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/ES64E2305821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaac5feb75da0d38ed0ce9b06d752f61ecea58948688758b3e3f20c495646146. 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/QZW9N2216001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1f08829f0be05fbbf92c5fea1bf32f219b79b0e9a1e5f0d1646a8a07e60a5b. 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/ES71G2238338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0c35c265154ffcb0e1c4f188a2e0b8d0ddd69efd40c35ab51a448bfa1d1686. 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/QM6P42409130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f59fc9fd230a42a14b036c53de5d111d3c034ff30cc88268fb242b5a9ac95f. 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/QM6N22457992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce893210a40033e877fcf19e4104163806f942b5794b7183efafb65cdafe6fb0. 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/QZHN72464643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404c812f41f6e689b6ee5e6299ceac84ab83efda68b66f3401cefb47c47aec14. 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/QM4TW2413421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef2f2fbf3095ec8115aa87ae45a0d8e85102f74e4447e615f2367fb784996b2. 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/ES5152101153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c73750c3e7dc99fcbae45f25c74255676b9e4fb121ce0312e370b925f4dfeb2. 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/ES5152100258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb972cf9d624dcfa88b169b62adfb767e42234ac6e85f41c33ca5c8da9698853c. 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/ES5152101156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbb3d00f3d7f3af4ff47e0157fdeed26b0440e30bfaf2786486a890c00ec8ae. 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/QZHNB2253861.