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 0xb047c4b9f25faa1a580e6c3db866aaec8580e383d799dd4ac8c3844ac04239f9. 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/073e541d-13b9-4b75-ae09-e0f8ab630e98.json and https://artists.proofprofile.net/proofs/artist/073e541d-13b9-4b75-ae09-e0f8ab630e98.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 0x6a319036f42b1101233b845db7d12d3df86aa3dadb82bfb2af464b35858c3665. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/USCGH1645417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b603728827d97b6e04da73d618856443c6f32b666223761c526ec0414ed80c. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:23:06Z), 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/USDY41643804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5b5a03242dc537d201ee89848f4308d804b240a1cad16a0b5da421b06d932d. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:25:30Z), 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/TCACW1775272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5b5a03242dc537d201ee89848f4308d804b240a1cad16a0b5da421b06d932d. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:44:19Z), 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/TCACW1775272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e62f61406e14e649cfb0c8cda5ecbbb87d45db8bf7b9d18eae21d35deda4f1e. 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/TCADF1710347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e62f61406e14e649cfb0c8cda5ecbbb87d45db8bf7b9d18eae21d35deda4f1e. 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/TCADF1710347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e00587e39a32ee4fe8fd1d1b7f3b36f8f26085613b65a359f897a8711709dd8. 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/TCADM1852735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c19288ed02bad6bec2d10c25fbabc4252db11ba71d56c18952dee62e3747c40. 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/TCADP1863489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5565cad30210bd1db7cf123e6258e4f8cadc70c9a32837c55deeecf6b784cf9. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/TCADP1871485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d1cfb5f3e5083b7c7f5d6f990738f050725135c5d6546b9c8dcfbc8b044942. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:39:12Z), 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/TCADY1808216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a415fb73e9c7b0cef9dfc42a733dcbbb7f5cbf956c425805616d81a44d10412. 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/QM4TX2091250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706356b7eb357e0279cf227f16899d7bdfb087ecf8e0dc5c7a9cf93b830908ec. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QMBZ92039333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a415fb73e9c7b0cef9dfc42a733dcbbb7f5cbf956c425805616d81a44d10412. 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/QM4TX2091250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c02811eddfb37ec4a7b0a03a00e90afcdecbf3a2e442e784693ec7b42962f4a. 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/QM6MZ2077670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a0f4fe5cfacfe6928ec4b616026249417954fe052c08c08e82730e0a43e5d5. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QM4TW2199640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa031d40e94b3544d95966c8132ca3bf942e3e3b744f027c5d82c226729eeaa74. 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/QM4TW2079126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6eb727ec7531664b32be72b72fb4f5aac4949c0a0e320ed80c418cc17a54d23. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:10:49Z), 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/QM6MZ2077672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a415fb73e9c7b0cef9dfc42a733dcbbb7f5cbf956c425805616d81a44d10412. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM4TX2091250.