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 0xabb4328ccb866a15e016c4bde79d0b46541713e4d3a6a911219c9f0ce98c8851. 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/6aaf9284-5671-4db7-8e1a-b89153419941.json and https://artists.proofprofile.net/proofs/artist/6aaf9284-5671-4db7-8e1a-b89153419941.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 0x1214389bbf815540c4fc68dc515259d2d2dc8dd6fcfa7340db3d24ab637aaa83. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FR6V81467365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8547c43d4049c29ce26537d6f6face8e7b8f33ee9fa0d81f909546e3ebacab0c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR6V81467367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d05d0c7014c131dd852045111add18bcfdb9eefdde4c34dcaad6242fb23bf9. 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/FR6V81461154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda62272f6c5e5e75e684fa01b50a13841bfefe4fd9f7f1425a67fb7d882f1987. 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/FR6V81461159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b366b14ff2a71a5952a641ed96deee1c8fda69d82ea44e895288f537439404. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/FRR660100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d2d5ebfe057a15d281998253606af225a5ca6dfc24477692585eb04c0d25aa. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/FRR669900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde7b08cbfc0c545ae1f8c6bb3bec33a83bb6a5223c516d035a038cd8d81eda3. 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/FRR669600023.
Dieu reconnaitra les siens (The Session Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da9cd4e4802dad0aea8560403534c1da097240f3780d9fb5fc69c6f59348161. 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/FRR669600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934cdfc81be1cb59158193f90f744fd0f409002728c00c059618da54a95d7f3d. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/FRR660100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538e89987a09a6c4386ab05d3c925ba254e9527965a202bebf83bb550700774c. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/FRR669900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f569eadb7c9461467332b4e463475744c7e573daec0fd92c4387230171ee87. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/FRR669500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586a526889de59d2b0b47e4cdec5be25b9daff87ed4b98a5cbcf0bc4da1c3df9. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/FRR661000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf39eb7b2a968fdf2f45ee80d04af69a5a42bc298ef54fc03d5033940b736fb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRR661000049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a6c1d60ef8742518f7d1ef1934c36a2ac6644bbae44808e01e31e39e96fedc. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/FRR661000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1ee0c07edce412f5cd866e585c592087443fc752cce5a731834817a4294e66. 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/FRR661000058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04dbc3a65b88c8aca3f25094e87209813521526fe045941e18b66dc30ec2be71. 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/FRR661000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d2196edc5a57d5067340369969ef83a1e39907f3ac8cde71ed2476e0da8985. 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/FRR661000060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2613ff93658198f97a2220974a51dad9dfe76a516e31119ebaf3ce24586e6f. 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/FRR661000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1602da5be729fcb728d168d92f6b1d72179b86de51224d388e4fd49664054012. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/FRR660900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3203049d6ec079f084a7a61bbbe2c32c15939089a8e71d8509632a0c997c6ecb. 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/FRR661000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9550bed74c1eef4d6ac8d8eb31df928869d618fae8396c29ad840c8b48051f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRR661700002.
Jazzy Chill: Sweet Jazzy Infused Tunes to Chill Out
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9550bed74c1eef4d6ac8d8eb31df928869d618fae8396c29ad840c8b48051f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRR661700002.