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 0x758c433213966093e78c8e8bff3c91bebdcb51e20a2493fcab947cfb1630e557. 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/ef7ce0f0-29c9-47e5-be16-867f65304b81.json and https://artists.proofprofile.net/proofs/artist/ef7ce0f0-29c9-47e5-be16-867f65304b81.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 0x8c3751ead3d9ffc25562aa1975df5dd95466d00dd976a550b382aac000e56eaa. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T03:57:13Z), 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/USHM90714674.
Attack of the Wrath of the War of the Death of the Strike of The
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487cf00babe1cedde4123e5f78b99ed4d0f376113d2b53d55104bec428bfeefb. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/USHM90857544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9aabe0fda40d0c2539168d8b58412d80387730d9ec1eac6a19208d3c0ef9056. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:11:04Z), 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/USHM90857547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8a52b5325b7b1a69fc8a1d2024700c7c67d7feb40aad75ed0e15ccbda4ae4b. 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/USCGJ1092259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b264cf0d4534403cf73896181ac58f54afa1235191716c5547723f8612d10b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USCGJ1092260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee68021be3696fbd0bb27a5bce10a032e6ff656b3c50fc99f20a8cc6f3fdfa0d. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USCGJ1092262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb873de7bcac077051251a642fea055791d50e4cf8ca3a5ea05ef4f420477a482. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:42:30Z), 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/USCGJ1092266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b2c493bb6ecd1fbfb428001addd4bdd432b1e1c42dbe44447bd853cee8e6f6. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:45:28Z), 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/USCGJ1092267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97dd7637ffe6c4c9b1912239dc75b39f0b4bec30318886cd516d4ab3b5fe0c92. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:11:37Z), 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/USHM91261122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76f571770548dbb2965ab7c1b8631571681f28c9f5795a63a23c471fc0cf932. 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/USHM91261125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553a11bbd6d6061c0d94169bb6d274a24931a3d43ce93eab06352a6e6291d6d6. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USHM91261126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf23f9fb6a673ebd2d038250a786ffafce6a5034294316f9ea8f25df23961ae. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USHM91261127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4c99d48fb616ac702b542e1a56af99f8a0617a3c1e9583169115974a033ec9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM9AA1471796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc8b150176dffb92f1239125c7cf210d0f599b0fb91d5e91718a607fa1cda54. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:08:39Z), 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/QM9AA1471798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6baa3bf3d1a7200b463067f69297c634ab75d6ca530e95cf1f5ab844b927671. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM9AA1471799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf74caa5134611f70543907680f9673446be88f619a75356493a2277d5a4461. 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/QM9A91692043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9274a826ce7d167776d5abb817ba8d5c2ae45aa688ec65487707f94d42b4716. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QM9A91692044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf17f665500d10f2ed4b9c8ee80a9efe4188619679debb848fac56e145cba27a. 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/QM9A91692045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b579b4a97b513a4de43cf4539f843ef1c0b9fa182fab508d95e8cce89d8de72. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM9A91692046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4235bfe4c603c0909a3a44f09d1b0eb138e9864d8f150604972cb221c2571c1. 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/QM9A91692047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c180596107622b11ad35e645bf6d245f0b958e6757735a9b6cf8d2979ec3b39. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QM9A91692049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c189bf06f6f4bd690ab7f3e83e8efdfea4d2b2bec608f9168a6e1ff367c0373. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:47:19Z), 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/QM9A91692052.