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 0xcf2cf2ffa52c169e79a2bafd7ceda71e3e482cf59dddb5ae5e269989b257f97c. 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/ba0a403b-191d-48cf-b9f2-fb21f95bf890.json and https://artists.proofprofile.net/proofs/artist/ba0a403b-191d-48cf-b9f2-fb21f95bf890.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 0xf926e7f15286028a01170060d9fab6337389ce1b352bcb5d73b40a61eaae4e71. 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/HKC371705525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61320d65f6d67a7ca3ed57b5b65fdf5d120ad3ab0410131f5c0d05d56024c7df. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/HKC371705527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028c15508bf5446f426aa3e0af1818f119bc1224bc43d174cd5fbde5c496e869. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TWAE32001305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda22e2c3573a10d6a3f2a342f596c8e679cca5b09188da6648265858eaf9d502. 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/TWAE32001430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1248cd2baf41f28c827eff3524ed2f80f4f4e20d9f48561ce8f18697b9be07. 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/TWAE32001644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc71e68a90ad0ff08c8d9021cd3ea0a6318e60b21754fa5991657ca2b5cbff66. 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/TWAE32001645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38a765b373ee4667062da1a260e0f8e86b4881e8ad608dc1414f05e07e9f636. 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/TWAE32001646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028c15508bf5446f426aa3e0af1818f119bc1224bc43d174cd5fbde5c496e869. 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/TWAE32001305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5689697383f614296468355564e5dadec5599d5e881cd70488a4f2b2a8dc96f5. 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/TWAE32001647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856c9ce944d72b29c776d380902081683901b7d057cce4083b0d1bb37ad22f17. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TWAE32001648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd425219230f400d99fad89ac7c153319af199923f51fe50399f14bad32cc33. 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/TWAE32001649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9014e15ad7dd8ec00ea9133b7f236bc586fd365da987385250666ef2950f1d11. 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/TWAE32001650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda22e2c3573a10d6a3f2a342f596c8e679cca5b09188da6648265858eaf9d502. 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/TWAE32001430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5b251b06efc9640f5aa8f8d5fcb5b6019814fa94ba78ec6333ee5d7303af8d. 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/TWAE32001651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9c9fe7e81024c308baddcc301eb0a07a0b85d638df7e57ddedf92edd7baa95. 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/TWAE32001652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff501afc9a6bba33a5395392c3505bf5b128a124d2c9a7c8ce7f4d97706395d. 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/TWAE32300869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509042cd0ead1ce411ec4682a2df4cde50e63fa24da960384abc866144554b90. 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/TWAE32301131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff501afc9a6bba33a5395392c3505bf5b128a124d2c9a7c8ce7f4d97706395d. 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/TWAE32300869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fae986e94ae66b124e7c993596bdad53f5ceff89ed0a0a78b3652dfc27d1393. 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/TWAE32301542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1f109deb94ce4e4e35c13c8494e776890cf2291733cee868057b4be89d68eb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TWAE32301543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcf310ace9df27e3f4085d15d087c87b5c556b30b0c65d50963e2ed3e7ba4a8. 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/TWAE32301544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5d517aa20ea3910590c9c195d10f5d51de36b45c7ba56fedbe39816864ca3d. 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/TWAE32301545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11d4f33b4998231b96304dd48a8375e6e7fc902e807bae67068563d3348aa9e. 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/TWAE32301546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba76e03262b162108809d1819e673d2cce754d6ae69637936fecd35ed3b13d6f. 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/TWAE32301547.
Tears in Water (a tucu saqemauqaung aken)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c689876976d9b09851783363fcce9ab035255ce0e7fd66923c6ea9d9ce4ba9. 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/TWAE32401498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496a95f7f7c9ed62301ce12f8de28a117e7877d6136c7000f553ec1bc5c2db04. 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/TWCC32508665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1815e4aa01f8554eb775ee7e2e0922b0b7ca2b0b08dd492fb8c331b61c95c278. 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/TWCC32508877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee1bae44466c7838be751bdc034fb6fc495edffc2da3f664f9e98275afdd053. 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/FR2X42268162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46b34ca59518204c4545539c220f9742c40c016cd797678e96a945dfea7a343. 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/JPB602002837.