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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f8a401ed2bcee86e1cd88ef76a29f486071595e8bd8a1d5fea916f7b0ae889. 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/6dfabb28-7c6c-44a8-ad9c-09362bb56d72.json and https://artists.proofprofile.net/proofs/artist/6dfabb28-7c6c-44a8-ad9c-09362bb56d72.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16278eb2e78482d780425dd5f7ef72396c0d0bd22450a072c6b7e3e5d4848e0. 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/TCABZ1445039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2938d7a225f712f22f94192ee48927297bdc9295e53a106150e95f3f437a697. 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/TCABZ1445044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3193f638bb5044a801cc92acee28f03631859666bc988f35932d3f3daf894053. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/TCABZ1445038.
Addicted (Revamped) [feat. Spawnbreezie]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3564dbd1329c9c3979100f28d785499a4fe0cab592c26a30fd40d898b7e32e. 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/NZAM01600031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92140ac7320e0041dd7848e66219702103ac1ed88e9a73e3f2c6f94d896f57fd. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/NZAM01600575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ccb3b9e463063e3cdefe381ef8d2d1b21a826a166645f1426c985cda5bd0a8. 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/NZAM01500718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7e060fa55c0cdebc98d6d5aa093d88af8feb0e52c26f1eaf0d2f574b018533. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCADJ1784691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bf135590f63036c0889f9c453928c1668db906a97c32b9665f5214709a8da1. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/USUYG1178941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3e7d92d2e6305048cc0427b31643199fc238a6c0ea41a50c2f98349e1225bf. 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/USUYG1178944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed4952bf48f6b93d0a202c8c17ec1c45e47cfbd02506d66fd0628455c923561. 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/USUYG1178946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9517a4295bb1e8b8b11babdcfef9afa7e724996cdcbacadc6233028d2ba960c4. 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/AUBEC1937281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1a12eb6a4504999fbc0b766e84c552b1698ccd92bb78674a90d9a88364d814. 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/TCAFM2167781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3743d145b500a529694fbae7314a2bc61e9eecdaabf893c0cbe8bd6cf161ea. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/TCAGH2206077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2c77804ea84daf7cfcffa313f6ce60c74acf702b455dd6f70049828561656e. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZPLS2189900.