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 0x48088cd2282303b0b99a5566060e2d6f020909655372c606e2f93c3deae46ed4. 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/cfea1200-1585-4b2a-b25c-271728072b45.json and https://artists.proofprofile.net/proofs/artist/cfea1200-1585-4b2a-b25c-271728072b45.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 0x264860976e5965a048f2c2dfb754daef48c0860073d342eaaedb4df4cbd060e8. 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/GX53U2458518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd032cf0c9bf5b58f7f4aaab64bad9287ba1ef52ac34810a124d7c116f4ec3fad. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GX53U2460107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1552c54deeffb5bb93230be9bb8894f33920afab6c029fe535ee864c0210c4. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:01:55Z), 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/GX53U2469102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd10e1b7b6b57b13c7e37d0041f7e50d7116ddb0eeec64580109d1ae11241ce. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GX53U2471842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d19568b5b1b2dbce5dceac41be1722898661a0b2ca362b2e750ae7ed4ccc2e2. 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/GX53U2474577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8417c69524429e9ae1caf0d62cef2db7bb740d709e21a7f6088c4bd0c58fce. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GX53U2479083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d0a96063e8ab06644ee0bc86eb4650bc8eb2bc6de76fbe016b760fa52957e6. 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/GXF9Q2404972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425af01a403a256d088d067dae3f60621e66eaddf6b235901d97eff19f2d7ee2. 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/GXF9Q2404973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f06b778bac3f777555810c3f04fb79b02a743e6e3f64fc99c3e90fd0f4517e. 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/GXF9Q2404974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e0218d23eb7874619fdea4cc23e54369215ec392cefc0b5f3c2846ded789d8. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:38:23Z), 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/GXF9Q2404975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ee661a402f73dba736e86af6de6ddeb969b4acc466c22903e137a70b75a604. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/GXF9Q2404976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7816679934ffac19a8a44c9d69d0454f672ebeac04a3a02ad4d8ad7c2c42698c. 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/GXF9Q2404977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14f6a99cdac594b849c62c454cb753fe50ebc418c4f97fec58f55426a49062d. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/GXF9Q2404978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bb7fa10efdbdb913c9b23f10b83d1686a2b9851900401fa3a9e567e8466e7d. 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/GXF9Q2404979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868a801255bdd2d9e4dae4abff3303c0fdf7b834716a891faed2e84cdd91504f. 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/GXF9Q2404980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99310116066da7ebfa2b136ca313b4e28c4292b392bdedfbe2dcc2049e1ac178. 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/GXF9Q2404981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e74f7b00ceb6dec7c275d6caf18a3703164a5d858ded1f2f9c14275b6d50f53. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:41:19Z), 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/GXF9Q2404982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93d5bd76f712ec009fb08e3840077e8656657ec90eca80b5f45ff35db590fb8. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/ATBK71200685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d903980d8c55ec0c484ace84648c8ad37d821654d74d4e3246a38ac4d1cb6e. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/ATBK71200686.