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 0x8049530e9614c5bcde0a8950796222994588b52da46e3339479a16e5e6691759. 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/4d9a9247-304f-4a02-b5df-e65df17167e0.json and https://artists.proofprofile.net/proofs/artist/4d9a9247-304f-4a02-b5df-e65df17167e0.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 0xd6d5d7e650a644e7abc143ce42ec5fcd1cc11658a5327af8cace6688c349bd73. 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/QM24S2308739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fdb5b6cb925c1b21ab7878afc3ca87e60281ec81f9e235f80d1dbd90b28b05. 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/QM24S2206262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0ecce43c3d729553cd4f33e2b903992997a805af72523e712c24c5bc8e1b56. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM24S2204565.
Lovers In A Past Life (with Rag'n'Bone Man) - Ampersounds Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d28fff36ac1ef1a0d13e03df07dcf784e37c7b25ffd1bae6942c45da37315f2. 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/GBARL2400531.
Glad U Came - Zen Freeman & Fred Falke Remix
Glad U Came (Zen Freeman & Fred Falke Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9662a07c933988d8205af37a2dc9e8b9f927d680e1495d89f06ec5133b86c3d4. 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/USAT22306247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899bae3ce5ab923936211d6ba6638248e13deeeb349839706a2d75105c529b05. 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/QM24S2401094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06f301f1aa03cc1a23705c9e26c659a5e4d80798b9a10a7811512d8e29026a7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM24S2400558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa253cba33fd3e72f85e7d2f2255851fec961e1f38f2da85a6769316288d9eb. 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/QM24S2304155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841adeef388c4f9652d8a81802b84ef77d36d79457b61ff32145e4f48743a957. 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/QM24S2302405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f079c29c37149b2e776d2411fda35be6b1347451f8a0d4f80331ca73cb77c4. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QM24S2302167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca1cf456582c8f4f25e301d0a2fe04c8429d848145493dbc97bbe5b16bdb35f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM24S2300310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424642f5df9dd938346cc85461ac6643a4413d02fa3ffffd6bf29823ffdcf6e2. 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/QM24S2300098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bea7c13c0c27aee9108f9b34a0c520584eec77cb9dc06de0a5b7384414954d9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM24S2201300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaab94aecc88651e5cad3da8eb8cee00c3f44b394d3a34bf2d29af670635103f. 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/QM24S2200601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832c37453eee628a83d0c9ed5f6d2edf9d3bec7c135a56fdf6f5adc58c5e4c64. 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/QM24S2200600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd4b5c0f3d71b3f02305258f583661094077066f2dfd19e07f2311f36c96b03. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QM24S2303231.
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 0x180fc11c39cad8734c73399f68569bceed757c420a835b66c3f7763d4c8706c0. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QM24S2300309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50e0552fa4a65b2120a25243d0a56544aed6ed49d1d7802ba5da4e30fe71386. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QM24S2204576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b98190fdf667ab799450fc5cbfa14a33a1df9a9d9759231a98078415c1ecbd. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM24S2202765.