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 0xde8ba7dc10692c44307f165edb39c2b547520d42041a0b8caa47b0ea996c95dd. 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/dfdceff8-7354-4429-9df1-f938537fd0d7.json and https://artists.proofprofile.net/proofs/artist/dfdceff8-7354-4429-9df1-f938537fd0d7.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 0x8846f2fa7458dd899b87552de85f715cb894ba5ff2190dff68f9fafb2bc3a60a. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/FR59R1906657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b7b3b656128e0e845669a7f5bfb2081a24bec8a97c809f704c94d34eb05c90. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/FR96X1903507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84356221eb893a17bc0cade476752f1c4860ce80ae5707df8e738925ce99b10. 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/FRX281963522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7f63c4cc5815eba0bcb0ce53c964039cfe15cfaf46629c7597a9ac0fcb05da. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/FRX452038198.
อากาศค่อนข้างเหงา
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944c0a868665031220896c596f2b291c7546a80c884b42589cda8533439dfc5b. 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/FR2X42000700.
เพื่อนกันมันดีแล้ว
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f7ad424ebbaba6c29b07a57e321edbe2ed886f66725fc404d17c52a2b49f55. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR96X2023493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b71dce04a18678def03839efeef57b53f5a4425941bd535e3b0a5e1eb9c9f57. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/DGA072118589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9d31e4d97f8c63cb05dd8a8c88fbf6e4e03bbfd6907b36c8c0e5cd3a6bcbde. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/FR2X42137715.
อาจจะเป็นเพราะรัชโย
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41ce2fd2c22a7f48e2a1c6180e49369d130d831fbed4a874cf0feceb2352f5d. 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/FR96X2156511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a103ad6783ceaf790c796913059cfec24f1aca3dacb375c414f1bbd10a2043. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR96X2160350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c4d2e11cb74e7f3b86b19fab6679905d95842abd315a09f5f7ec4b74fbd1e0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/THUM72200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede5657f3615436437ec9e338d1ff87149b2111b18fd0e9667674a007a27a0d8. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/THUM72200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c778a68dbcbbe2ad8130057fe215396edc6cb3f982fbe7d54a4ba9c8c70885f. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/THUM72200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5242a8492dfc760dcd73a5b64d6739d8bb3eaef5273abbb67a1741dafcd880. 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/THUM72200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede5657f3615436437ec9e338d1ff87149b2111b18fd0e9667674a007a27a0d8. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/THUM72200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcd60529892ae869b4076b75e616aba3b1c697a5d091bd31b3cdd3693521d70. 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/THUM72200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8e9173dd41aaa5751e30378e2c7be1146e7ade2c50ca5586c399cc9ce19ea1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/THUM72200052.
เหนือแม่ฮ่องสอน
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec31f8d7ace4f9799545d3b01cb7edbc68c5e377e0aaa4cd5188ca3d00f8239. 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/THUM72200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b080c1f761ae322f35b69afdea766827bae0d9b83000c754882d0a415bcd794. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/THUM72300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70be0a0bf24ba7155b495e4db5097efdb047b9992006ad4bb68da02ae5f4893. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/TH2DY2300576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd0e1a431595f4d825ec6b8f618cd2fff35b4f724a275e8a177e93690506a72. 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/TH2DY2400190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd362ad2e54770bea5307392b64a05dce34aaea77b8a5e27618b5a71682ba8bff. 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/TH2DY2501197.