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 0x293c44702e9973bda692a730df6a96880029a22b291cf5d6bcf8be24abafc608. 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/58a78b4e-5069-416c-bc27-3c12ceb01ae5.json and https://artists.proofprofile.net/proofs/artist/58a78b4e-5069-416c-bc27-3c12ceb01ae5.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 0xaf719a1063830a8dfab529ae78e8eb01734fadfe0945e71dc7fcb83e5002dfd2. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/SE6SA2199372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573db6920ac68c76d2c5e3366278f3fb1d22d3d969ffa8af6f5c4582f819a200. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/SE6SA2194963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb448ea96ae8807fff2214fb813cd80e51a43e9dc256529d9d1c2af5e9ac467cd. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/SE6SA2194965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d55910d2444b20a42b616b92aeba4a407bbaa09256559dee6a0a5ae490855d. 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/SE6SA2194966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7f55722b07f281555243d4cd23e136476834991d1a6460fb5dc366130b92c7. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/SE6TI2163784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd1ee7cdae598700dcd3a2790a2dc6b68228c712ce1e97b1183acbd3fa0d9f5. 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/SE6XX2127067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27287494491065de8bf891499af2877b97a016b9c00368d59eda7ecc99cfb60. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/SE6XX2127068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8beeb97074e84ec430174d90483328443414af7c9eb46113ffbe5eac43699c7. 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/SE6XX2127070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e7f04fd9a9058816a05c1467ebc769eb1b1be9bd035d3ce04441593750e1e7. 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/SE6XX2127071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ff7ede7515b90ddbdd8ef26f1ce016985c7a3e1b5401b7b4529d00fe77936e. 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/SE6XX2159830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb59687298ab90ed63a4041ec85459387aa14f2fa08e2a3dd40ae655d461ca4. 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/SE62M2179815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f9da1e9ce15df19d1174f45eec0462f38f83cc848e1896251f4cb04e413153. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:00:37Z), 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/SE6XY2243594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e1be22cba9a3e852a078740eb796b164c415ba300759eb7c049831cd5587e3. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/SE6XY2243596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755fa507da31215b48d8f7fa74f1b6491a3847602bb55ee95dc3dd3d8b1c160c. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/SE66N2257755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf802effd6d26319f8c9d11d74e9f25547d5f7e058b75478ab0dbf6d33429956. 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/SE6QE2336832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5b00721b922a669cdf1f5fa4fee1134bd047119600de247cb25eed8fe14aa9. 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/SE6TI2393604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb615c7f39d95ae9ea510e9f4f4d1efd9166a5345a0de7dcbee6ddddf9fe6b86e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/SE62M2317122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3774fca27c71e0a30f9b14791f12dd3b5011d4686d2ba375d428af99b8647a2f. 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/SE62M2360005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afc50f92dd6d5cae95b956b07936eac2230739c4b8f5456f374862a2c39163f. 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/SE6A92312684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b6986633f01901bb4a8ad42a47f9610a998710697508a48ac85fda218c129a. 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/SE66N2330933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717fde94bfb196db367ecd9dbc19e1fec8790d97b91796e43d451c778d04cafd. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/SE66N2363020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31528861401ddafcdf6b002216457b4c6503bd45a2a3b972c24850600b2743a8. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:51:42Z), 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/SE5752408472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257691f1675892e4f1ff8109897fc50df46a43801989d1c9181798f11bb2ac2a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SE6HN2404705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0229e7d392d8ffce9ee27597313fc05d28aa3ea8615003900ef2047bccf533. 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/SE6SA2429309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc439539be60dff227519c155f5f75d4b0f5671e7cb7876707aae6a6013b429e1. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SE6SA2429310.