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 0xc32a612bfecb834f617f6c17fe9d3bd2ca74686e0fe023316c9da3f740e326f0. 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/0b82cc4f-1bdf-4be8-a349-c2df0b8f14b2.json and https://artists.proofprofile.net/proofs/artist/0b82cc4f-1bdf-4be8-a349-c2df0b8f14b2.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 0xb0c0588101833c3c07db45966ddcaa2dab2461bab3ba079cbf1b325d8d81830a. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/PHU011414030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff91d49751e4306748f03be312d56d2faeea68f3d8aa13d57f88f11d13391ad0. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/PHU011414039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb3c571f1c0fa5090b1b3a75bcf7403caf137da829fbe9b1f4d5d0399b1876d. 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/PHU011414047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582680b43241cc5e7e08c6996fa7a03b21700a50c7d245df22c292e5772ae43c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/PHU011414049.
Saxy Christmas With Jake Concepcion, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc262492ce663f19de2cc8cfd7a182970a5eeff3efa4fbafbdded4d5c10961b21. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/PHU011414106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f072642728a8d1dafe893d934cc4c93bb63e6173cd3d59bd6c910df5f3f1a4. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/PHU011414075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746e109da71248b28aceae501bd9bb63d9e9455e29c878c0dfc2a38a03147816. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR6V82449637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c21bbdfa06566093e1f702910aeb6d1ca50c25fa50bd157742174d032dfba32. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/FR6V82449638.
Jake Concepcion Plays OPM, Vol. 3 (King of Sax)
Jake Concepcion Plays OPM, Vol. 5 (King of Sax)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e73da485b642efb30a20c9c60b561cf6f84a7db8a96549e6ca72300d8603f9. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/PHU011414175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1ebb765f074748de2dc2fcf7b94ba05defa3cc3363a996e112529f50530445. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/PHU011414177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b3b29c1749a0ac07db203108a2b17dd1f5cc1f456a9cd0c92a3e088816c35b. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/PHU011414180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32218b96a20e78199b17cf2d72fbc79131efe852de93e1d04bbf4e17b48ecc20. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/PHU011414181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95d3a2a53d4da0bf83368274e146181b2131846f6438ed01263aae07bb42890. 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/PHU011414184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fed0259bbffebda14eb4769355f8b60511d9fe09df97f1c9591af674445c8a. 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/PHU011414172.
Jake Concepcion Plays OPM, Vol. 10 (King of Sax)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fcb55ce65d06b2c9f99ee34d608873d8fb8f9a3ce769fc7d3e39fb6536b878. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/PHU011414201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375009c33836612ccb8f856928405f5ea9a727cde507b6a7bfcaa17a48ab9ecc. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/PHU011414192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e79b0244e671ff4f26e09023a03f4ebf851ec0c0c26efe5bd410b907d6ad26f. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/PHU011414193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665714283b7d81c6be0b2aed2d0b35198b24fdb0a077543ad191c38ad493cfef. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/PHU011414195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfe20db6122eabbba6f7c903df095867b817f4be42d8b84f8cfb0c2a1e3d4f8. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/PHU011414196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466429ba1250e10365e46f5b48c2e2a28f659642a7d7c24ff3f91535db1c9ecb. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/PHU011414211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7502ff459046473ee61db1d050a84c51ea476a00240c8b2b6a7ff731df09d85f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/PHU011414225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd341af7272bea90fd5d788f7905cd7d659450c857b4e091fb50fc66374272d. 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/PHU011414227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf274e67c5a470d0b605b6a104136a26023a1e1d00da81656e92c05fd426c5b. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/PHU011414237.
Best of Love Songs on Sax, Vol. 1 (King of Sax)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ca274e5851065284f293ca2dfa3073ce28b679cf8b98fd97e783bc89927ca1. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/PHU011414266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38ee3c232db2aa6c915a19ff3294523a5f46e4466810dbba54fd55d2b78858f. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/PHU011414269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8dd8fd55a8dbcec784521613b9b2b4503e9c0b132045050d61b7ac64f16d78c. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/PHU011414271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687e71f6d97f630191b5db10aba674ab18ccf9859f5ace0d658ac19f51b28174. 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/PHU011414272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e054bd87dd1641bba510f7b99d81ded4ab3490a909713a98c41cc7c78206d1. 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/PHU011414274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a88f238c3e6418d3904e9a1b41449bc01f209117abedb0729094caf594e4af3. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/PHU011414275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0c9cfdf1007a5f83473496679f2efdc0bb8e4e586ccb893be051e9a76f0819. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/PHU011414061.