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 0x1d4eb33fb0868c5de771382863c6ba9fc6b39bd8ec89b48c0d108429b16fd381. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69455ce0-79ca-4a65-98c2-17ec25e057a8.json and https://artists.proofprofile.net/proofs/artist/69455ce0-79ca-4a65-98c2-17ec25e057a8.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 0xc84feac36506bb285ad33eb0d29352797dac6d268e7453ef5f31884ec9795497. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZFZ31943764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051a8237dd06ac9b9be87425b14fcc15531bbfea94fd8215ef7991737d7cb298. 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/QZFZ31943770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1df109901c286481e1b6dae85a2d803606253d093bb4c48902dbc5e11669215. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZFZ71911643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae37f92c4671ffb2f91d5c083e38c455939f142675ceb79d6e038af59a934955. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:19:34Z), 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/QZK6G2042253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2003dbdf61f73334be5d0a072f0416bc1e4b8e421fe972f307188762eeba75. 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/QZK6G2042260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2db760ba945ab78ffa451a51a1379c12b62d14fed482c95e090832b9f8e74b. 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/QZK6G2042262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8033cdc08b9d9f47d746282059eda9e34811774adf37e5f2c5976a13eef1927b. 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/QZK6G2081969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2942720bf6a4b552a737cd212a2c848773d7dc3c1da0696a2159e9b8129a6259. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:00:03Z), 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/QZPLR2191721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9059c1fdeef9c44e9b5593ccacd7be1e6f803cc6293149bc54803fb20db26b. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QZPLR2191737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf751955eb871e5f01a55d2a8cc3e756003b94aca99dff4f99b612f82a9b329fe. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZPLR2191702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9705e9239eddf670a57ca88bd4464e4c7161dd8e87760a4168d5406fdb5602. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZPLR2191711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104959cdb31d8513d971a997d073a7d54963ad85fc2761f7b3a0a3c1bc2db9ad. 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/QZPLR2191714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b475e56ea5fc469a012bafa967f6c563791abfd9074e27f35cc5ff3893b4c9. 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/QZK6L2215170.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bce095c73ee54b968ab9efa8c1cfc797d59382668c856b40b7115cdae48f0f8. 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/QZFZ32378928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccf2fc3c673e18e7d3a78752c0e8537cde7511fddc10007e48f07b87b54714b. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:32:09Z), 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/QZFZ32378930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc887b3f286f84c5f2824e19d0937c6a0351c316be494d7f30b3acf22de6a5557. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:01:53Z), 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/QZFZ32378932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900ad307a9b35762c51e5363bb55669d97410713af1580987569d708308ef508. 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/QZFZ32378935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23be05099f73b0498c6ffb6b679df76fac85dcf5dc664a24e9bc9d82c8cc283. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZFZ32378940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053e6dac59c8e6c439779125c441c2a096542a8a4cc4cc3bb3af14358504229c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZFZ32380846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb9f623dc27cf26422fbf171ae7214bd17ddf4adb6c7edf74726ecea0610e62. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZHNA2338459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1d632e050436ca0d41a2e2820b0ad360c19aa3319b0a10afee6971b9447ffa. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZHN92461466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8b4860eec711dd9ab5648fde2c2415e74bc561e7b9589bccffb9c5498c55b1. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:53:09Z), 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/QZHNC2461670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b6320108098ab6ba8d492ba8bc1ed6719bb163493286554c9e410d143710bd. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:58:45Z), 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/QZK6Q2453926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce6ba253883ec3982f81d592089e7b86c1c39d2126816cc08cd779017a3be39. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZK6Q2453929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa0b560816697438db6e2d7860bcb25aaf624c3a470326d4a49b415f4da509b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:43:00Z), 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/QZK6Q2453944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff44fed4e7e0ab9e26515193ef7ba1fe7feec0ace1c1c2e987835d68e9ca44f7. 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/QZK6Q2453949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab39bcaa35076cff7e0b60da1578d62783f4ad53fddc3ac69a1269abbf13d2f. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QZK6Q2453950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf5834c0290037df8c841d2bf68d1b1148f89cdbd5c82666b41eea46575d2ca. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZWFL2489277.