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 0x21e7867e858bc28b35562912224b576137eead52a6b053ae15a2ddabdaca2b56. Chain 2 (Bitcoin): anchored in block 953618 (2026-06-14T09:16:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1abe7efd-5134-4484-abb2-84cc690a6318.json and https://artists.proofprofile.net/proofs/artist/1abe7efd-5134-4484-abb2-84cc690a6318.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 0x051657fa0a97d576e0292817e36afd4d68bf969df387bc891548403fa276b1d1. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/BRRZL0800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2929b3da5fb40f7a3d359e168f2b6057ed300819d5bad76a61f49e852f984f6. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/BRRZL0800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a155765d51b35df5d8513e485b220c8ee8cadf81c1a538ce8862f90c052187. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:47:44Z), 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/BRRZL0800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8a616bce419af907fcea8ff95894f48e61e28e7f810a825caff564d99d810a. 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/BRRZL0800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d39baf73b99bef9a7afbba6371f51d0f8b4381c7b2d215066032f08e1a0a68. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BRRZL0800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ed11c4f3e3c495941eec2b72b7cc074c04e64e82b48e756bbd69b45d9d1dda. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/BRRZL0800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5107bd36983933dfeb5688e930a1bf27e5971e9d036e53c3a89bd5df771fbf40. 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/BRRZL0800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7f4de9a3b8d47f00ca68e0643b2cc1572c36d45357310abc49e854f08ce1d4. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/BRRZL0800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2657583d0b36e7459d25bf03cc52171e8a17243bdffa9340ca0a31b7a1eb979. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:21:51Z), 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/BRRZL0800011.
AudioArena Originals: Bittencourt Project