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 0x4f8d65bc539a5ba409485441d2b549c8dd6e304811a5ed596d0d381a85c37b7f. 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/6d2481d9-a1ed-4101-a309-274469cbb80b.json and https://artists.proofprofile.net/proofs/artist/6d2481d9-a1ed-4101-a309-274469cbb80b.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 0x30d6af0069b1f91d260921bc71228939f6fb3a9207a362198496d1b5e4e973d6. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/FRX281714261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2bb43c5ce28f4c0fd92b3a5c4d30a3669072a87f765552e8e1bd048c2990d9. 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/FR96X1707053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2bb43c5ce28f4c0fd92b3a5c4d30a3669072a87f765552e8e1bd048c2990d9. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FR96X1707053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec81cf5dbb35848faea7980d8981950824b3cdfa3200ef97926b0b89d346832e. 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/FR59R1989017.
เรื่องรักระหว่างเรา 2012
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8114bb82eee5ee0ed5a53fabf830688e275d0da77b1ff6e04ea44271a5611f. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/FR59R1985900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d849f35b9c5d98343aa3e16e1500c6fc1036dbbf51fe2d19614ba7e8b6bf2f1. 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/FR59R1989216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab27f68ff475081328fd8064dee782deb418b0f4063f27303b3c0b20720f33ed. 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/FR96X1921238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90db880829b4d095fc9a654ec2edd4f83c3c52045fd0a02a43a59a782efb8999. 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/FRX201994282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d53f6dede53745352a9c3c083ad9eccd24cb2d8b6262a5d8673daf62ec94ae1. Chain 2 (Bitcoin): anchored in block 957794 (2026-07-13T03:10:12Z), 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/FRX282199143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed23cc1405b5f6d6e3197bf7204c0eefde9ee338e7fa236393477f7b929b48f. 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/FRX872204044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed23cc1405b5f6d6e3197bf7204c0eefde9ee338e7fa236393477f7b929b48f. 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/FRX872204044.
เรื่องรักระหว่างเรา 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82c7dae84f9d04c36cbcb8a0e180671d5f3bd2b71a0bce11290d6617208213a. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/DGA0L2419711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850360a619d7e5c1c6382808bae5e0ba6510e89488ac7f651feb4904ec35cc95. 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/DGA0P2448946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4a30f2b0392129c4cd990231f7eca503bea5c8b3fc24a14a5e0468119f2c4a. 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/DGA0P2448947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3acc0df501ccdbad3953eb7c57dc0b32884a51b7f424f5fd4d0e885cbae90c4. 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/DGA0P2448948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632503aa551c1135403767926d1ff4b7afdd188a2a12c6a79028cbf291bab5ea. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/DGA0P2448951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea2ef6d90221518d48c444da10a7eb56be3adcb6d290c98b8f342bbe936ab73. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/DGA0P2448953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779752d53eee578b72e47ae6b622ca7de40b204d728f86fa4e9fcd1e317bfb1c. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/DGA0P2448954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb22991729c372748a9c512117d79cea250334320db7acbec92f060fcdeefb9a. 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/DGA0P2448955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd0ba193cc46f45acb426ecbc82bfc4664b16e945c12c06d640d85fd571da3d. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/DGA0P2448956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3037885ef8611ed3578abb5c2ee3c4d0c2d3712a91488433ded78090082fec89. 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/DGA0P2448957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4a30f2b0392129c4cd990231f7eca503bea5c8b3fc24a14a5e0468119f2c4a. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DGA0P2448947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a97efc40dde3406efc481aab08e2927cf5178a2279f368b16fcb56168314a5c. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/DGA0P2448949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea2ef6d90221518d48c444da10a7eb56be3adcb6d290c98b8f342bbe936ab73. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/DGA0P2448953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef9283ae12b274b02fb0b9d4072eccd2ec91af375e4d9e4e45d7e241418eca0. 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/DGA0P2448964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b13398bc5a64b21f9f3a1a89088386570041eeb48759531ba9bca4dea005751. 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/DGA0P2448965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76fd9c3ffe2b18ef6b509da8abea36079ea5c183e0eaea98601a4fd7f602438. 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/DGA0P2448966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2994340887fb94c4c6889cbed6594c312e4e9b6c073b4df3461c31f1f55511aa. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DGA0P2448970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32882cb9de2d7015d4cb8236034cd860fcf4ae4f5412552879d4e024cfc35fb. 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/DGA0P2448972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbf4164dc1d790234ec49018735ec68a4c9401270a1e723032a592c3ec1fc2d. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/DGA0P2448973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1921e34fe7efe6eb57a0a034b44a4f0ff34e81ae897018324f61520afdd75b0b. 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/DGA0P2448975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b13398bc5a64b21f9f3a1a89088386570041eeb48759531ba9bca4dea005751. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DGA0P2448965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76fd9c3ffe2b18ef6b509da8abea36079ea5c183e0eaea98601a4fd7f602438. 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/DGA0P2448966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2994340887fb94c4c6889cbed6594c312e4e9b6c073b4df3461c31f1f55511aa. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DGA0P2448970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea28f40eedb1d812084a02fa8ca7dc5c21a1153a314c90f5d4daca870609264. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR96X1737004.