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 0x34d96ff7fa37332ef0ef24bc0fa2f81f80f3bfa0c1d5048b1b4c44d0a6debddb. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1964a0c7-86cf-465c-b46b-1b23a083175f.json and https://artists.proofprofile.net/proofs/artist/1964a0c7-86cf-465c-b46b-1b23a083175f.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 0x9ab1b3971736efe229c9d639f5aab20262526ebd0651eb5c22f4313af77adab9. 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/TCAEF1970753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d6fa24da325b6682125910de5c45803d63c24596b2edb2dd42c0f457f28e47. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/TCAEF1973376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ebe4f528cbd4c5ae23afc59cdfaeba60ee67ff270bc25d8472e97fb82a0566. 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/TCAEF1973810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9890e076f71000aaca52afe6a1460d83aa48a3b2f1d48c181e0dbfe649d5f64c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:04:47Z), 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/TCAEG1991676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524842989771aff448978b5468bc05a45732ee940505bec188583c9b8180ca15. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/TCAEG1991024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db722e7d085e39962ded4cfa67c325bb8d00f4ee3f9a936cc08237c9cd9a005. 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/TCAEG1991126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308dcc4316327ea1f155e87b1bfdd9c0de3feaa48bfd0c962a046f671f846602. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:55:02Z), 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/TCAEG1991577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932087af8c06c57ad92fe6cbc857a22163bd67dd82c997cb723a46c7fa6a75fc. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAEG1948405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c4c120ea91a6423f1a5c0d1c1d25cb9ab0d7f3719ed39c74835a1ef544db4b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAEG1948387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa940a7f9b3da206a72af66299519f46302aa49d2e0673f0fa7919d5952a323d5. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/TCAEG1960347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a74b375351cb9ec9288bcd91beafdf14fbc8a67abadce6d28b9c4fab8aa2cb. 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/TCAEG1993426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e15397c4489e5df10ba1ff618c930d9051c74c239742fb121b12daae3b371a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAEY2033038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5312760a0de53c207c15384b6a043931b047b5f3670e4151fc7a2a2ed9282e9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAEY2033055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa228318835f789ce4ee80e4802e366ffb4289ec262eea22916e5512539fc1315. 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/TCAEY2033060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f49d8f070ce58b03a23357c2b6c5547fa042c8114e42b214335c38baa19a6a. 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/TCAEY2033064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a84d4e57d6fbbdf8aac10e9c0753c3940d236c58e61410103b58031e856fb3. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:12:23Z), 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/TCAEY2033079.
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 0xaecd6a573e7f43fd69e9c4d8b14c2bdcda31b215e1c43052321bc470bb47380d. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TCAEY2033041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7773862aa492fba66556cf20d8b69f135441c56ad9a4edbf79d05d78e000b4. 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/TCAEY2033074.
Yeshuve Naadha (Ithrayum Snehichal Pora) [Colab]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7884739acaf132f136e8dc63544c58dac08b8cacb6f2e8d1d54b5b8d0d66fe63. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAGR2241894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba2c5b4d3dfdaf41331b90d33f0b86b563a1a3ff4b21d2524429ad53e92305a. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/TCAHT2496511.
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