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 0xeedaac0c49c526c9c3e7d659a7bb04d6e8ed6280e7e6bc6966bb47c8c2234ec7. 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/2b5d2d0c-8f3a-40c3-9152-61565de10162.json and https://artists.proofprofile.net/proofs/artist/2b5d2d0c-8f3a-40c3-9152-61565de10162.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 0xd79681fed08f39a3c59d7ab0008ae28c4cd84997bdd8768d8f86166091e36db3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BGA271500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff8ce475c0fe4dd2f2aca8bcc93bd52413bbf24e1a0a6448d1c4fe545e10b82. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:24:01Z), 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/BGA271500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4133228e4727ba3e7a10c219d16f33e88233df066ad16ced9eec63e67c9cdc21. 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/BGA271500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fc16dbde0837f6e5d879d06083fbeaa87f9d31e60c9a18b671281c1db10703. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/BGA271600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b5334eedf958a9aed3b24570ab791172d45840eded58b6528e479118bb4a7a. 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/BGA271600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69f71bddb8e922f5139285e0f98e920340ed65ab532ac3b4f2fa0475b029418. 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/BGA271800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87dee2ed612458e3fd35e64908bbeb8605f4dbe776f7f11f7fad9c7dcb89ef7. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/BGA271800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce54f6aef3ef53228343aa6ea73e6b35cc4d5415709308f6c8c15afd0866b163. 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/BGA271800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc79bf3184fc7ad65600590bec05e990b2ed18c0acb6c9b9e6d3b2084fd8f1e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:22:50Z), 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/BGA271800052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecd2a69d8bdf64e9a5ccbb6cf6655fce0c1427385692a1ae83b2417bb52b998. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/BGA271800059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aad01d83222e6c2e3e6de21763e01e51f059b7cde02c6591d192c679d8ef6f6. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/BGA271800065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13e10b2ef01c3e705fd707f2b92732199cf91e5752cec3a7b0c5c0df46e380f. Chain 2 (Bitcoin): anchored in block 957868 (2026-07-13T14:56:55Z), 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/BGA321900132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ff87fd51fc88ebb71466c59f59400ec4d3108d0040ddcd23cd0096e5346f36. 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/BGA271900083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeccac9e2fcb530e6eb493f8e8258a0ea661228cf296ebf5dd70b5e531fe00d8. 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/BGA271900087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12902f1dcee13c8ed66c02d7aed4e770464e6d1cc2cb59d593effa482905ed82. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/BGA271900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0052bcccd6da6f820a847c04c8a99f3684330e4113ceff29be9df71efdb3ad7. 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/BGA272100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3f40659892613ec264d931da4db5da379de300a8b528cabfe5e3f011138abc. Chain 2 (Bitcoin): anchored in block 958863 (2026-07-20T10:27:46Z), 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/BGA272300003.