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 0xfbd2de1b7610c3fd1aaeae708c048139b893ecdb16bdb11981bc9e8fcfe3726d. 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/ee3b9d13-3662-4814-8fee-ce35567eedd3.json and https://artists.proofprofile.net/proofs/artist/ee3b9d13-3662-4814-8fee-ce35567eedd3.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 0x87fdf02080aa83313e0fed7fc83d6100318381396859bec12553feb9ac425855. 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/USA2P2126763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca794c1346d15dd1afebf9be1cf9b814d921aa4b1fe0084de17beba9fc4438d. 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/USLD91755355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a7fa30ed4a87ec75cf84665141c62ca11898e138d5d026659dc6ee05686947. 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/USA2P2306798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbd0c5afc3efd6f026976775a22b1988b37060a7741ac776734fe96d0ab445a. 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/USA2P2306802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26dc8d6b4a325510854efa363755dafa2e6a474dd623c9206def9e0adc1cb95. 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/USA2P2306799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116faa47362ac83d91a035a95ff6ebdb08f721374a089306431c9c31799b75d7. 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/USA2P2244033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3eb927e8539665bc72f7ab2e5a4ca607c0b65b3d708695d11b4aa67778fe92. 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/USA2P2200599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4297d762eff4d14edfdfeb54141e278352a8794d568fa060d732f2fc1633c444. 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/USA2P2306801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75eaa7bdfcfdae2a920c047bf5489bb4750dbcb359756e75833c3c7976a56c96. 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/USA2P2264601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed83b7037bd2a305b5f7eb149af206685a08efe6aa00f944bb1645fd6003116. 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/USA2P2200598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f6781b3f8e1af52fc65266e65af62e4a3d8887e026b97e3599ac7c444e06ec. 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/USA2P2247732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243bb8f55934dfa16ef3c35581a2ca65f965996babdce7d00b7b94706023e5ac. 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/USA2P2306803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe7ec2f56bb3f3771ac574e0e3feae7e776fd99d726b5ade1ca1228a6172e47. 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/USA2P2430996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39759ab86a1ed65fae2aaf1f8e91d9753dd54df879aae57a92cd84da7329287d. 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/USA2P2402073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0425bc042e0a41cf5e24c51f7c3f4ce385b710e016f355c1d01f14ac4d0a64. 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/USZ4V2300118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984080063cc336e322d75ae490ff7a329c072e1ab191e63c47b657fe1edfca53. 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/USZ4V2300116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116faa47362ac83d91a035a95ff6ebdb08f721374a089306431c9c31799b75d7. 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/USA2P2244033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed83b7037bd2a305b5f7eb149af206685a08efe6aa00f944bb1645fd6003116. 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/USA2P2200598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb732aec71fe9c7472d413e77c815bd9e4f64b607a68695438e9f53cc0f2987. 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/USA2P2125221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bcf304abc2ab75cf27e2a4c1612930314a86ab41dfa19e55e05efcfe09eb59. 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/USA2P2124792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9898cf0a192c06c4463b03a8b4d74110dac09e5f9668f9cf985d8720df2ddf. 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/USA2P2122889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8a80e446daa2d5b7607f905c93f34adb0510e4b58bf15c02307b3b889b09ed. 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/USA2P2408493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a4212ca469130396f37fcf67fdbaed186cf3e63bfafdb973f6bb9c506558d9. 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/CA5KR2494970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca794c1346d15dd1afebf9be1cf9b814d921aa4b1fe0084de17beba9fc4438d. 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/USLD91755355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b410557c2ad4ce74cdb61ba90ed37c8b7335b0ce371df0b36fe80d1ce28deb3. 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/USA2P2468619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb3f6b8ffa035a7f796f71e6b06611585bb85fbe7971f9627773bfe329c92e0. 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/USA2P2470805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb679ec4dd1b4b3590d006d843ecbe13c24acc0bb05e5289297712aa055087e8. 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/USA2P2470806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5b811a2913498f948b65bd2da71a48f7308f9f1e85a9b6a12e321056b9f989. 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/USA2P2463145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f6d1f5aa05326c77c2bd03e31857af3fb6c4c00aee231d9427d80e2cf21200. 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/USA2P2469975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93604bad7d26b80b5ec0c772eab0b2ae3c8123d2ea811a6bcfcbdf50e7a70ecb. 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/USA2P2470807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe046d7caa0d6da602bbcd927b1ba5e125b7495a7e0b420fd2a87194034a875cd. 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/USA2P2470808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504ab001d1b6853e3f985c01037b02bc00922d9c34028386fd135d1cddce9c90. 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/USA2P2473476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b410557c2ad4ce74cdb61ba90ed37c8b7335b0ce371df0b36fe80d1ce28deb3. 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/USA2P2468619.