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 0xd6a6089f575863c97684df4fa705992412720908574f5ff299c03ecc5524901a. 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/348a3cf1-7822-41ed-b1b6-e9bac2ee0649.json and https://artists.proofprofile.net/proofs/artist/348a3cf1-7822-41ed-b1b6-e9bac2ee0649.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 0xc8694f8a43749ef21a367efbdaab8d91d7ab3819c26e4781986c3fa253ef0c3c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCACG1584206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fa5509b7503186244267cca99bc4274f46494c50a63f34f6afeeba55ef547b. 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/TCACG1584207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1367d72bde0b1c337c1627b1ae15fb18f293cac6f522a6c45d47f73dc00b14. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/TCACG1584237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce6ab4a7c3e97531baa41310227a50ec5452db24a6ec49c782c501654358806. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCACG1584242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0021d2cbdb556e11d15f26ddca6022e5f6ea8753b913332e57981d821495d114. 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/TCACG1584243.
No Te Enamores (feat. Los Audio Kimikos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ef408f45e95773741cad6f68d833004a9337100518460bf8f8b8174dfd1c55. 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/QZDA51867101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e243d58735a957dae70d37b89e55bbf3a2682c6306f5a7480a54ae4fb9e81bc. 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/QZDA51867106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea31a826393d20eb2ffa19acd43b6035d81b5f1c98c0781d095045b3a92852e0. 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/QZDA51867110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8b05d06beb3c6557b6cecb740f0925800776d7260494acc276c4c3ad05e1f8. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GBWUL1830552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eee7c391b3d5a452517dee590ca0d83aa5dd31cacb5587a1f287c3243aa80a5. 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/CAC0C2100608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e699d64559b7b5ccbc7e59c6b44522d6d0b28e831ca6fbfdf16b596bc224b0. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:13:59Z), 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/CAC0C2200801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04996d8bf2d57b3d2651c537d7466b23a7edfa3ff0225617e6487e4e339eec5a. 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/TCAGZ2336147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f35f72e15e199385e4fa782cfc17b74a167b4fb841b135b45b8469651af6f8. 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/TCAHB2392805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ade89ea275ac7e497cf94ea6fe1bfdb2fb29ff4a7ad77f25dc5aaa5505b958. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CAC0C2300859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e88150ef684502b9e1d2e9aa3829d1e096381738d933f30490becf91be03e96. 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/CAC0C2300856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297f3386c2a2d21cae37bc250c1bc75ce12132d7e4d4fb68c2f3fec2f7639205. 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/CAC0C2200731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88dabfbaa4e665c0c5ab44b85a34d4613848081e610fd007ec20ab1c57aaf97. 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/QM4TW2026907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32c73be366b2adaa3db1b74d2f0a708d007998e40dc49fa740dec9551e420ba. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCACG1546966.
One in a Million (feat. Ken Y & Cruzito)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa826fffc04c34f22ebc2a20facb9af62d0fbced2a5a08b45c6ca2c8febd72a1f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USB270910132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdae2d5b1d021a7b6dd2a90e3555b075ec0f495e9adc681d24afc774d8c2e29. 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/GBWUL1920446.