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 0x7aa51caac02d61b9a5601925ca78248345bbe07561bf3d5848d0d0d910d21035. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/006421df-12ec-446e-8766-469cd76e3bc9.json and https://artists.proofprofile.net/proofs/artist/006421df-12ec-446e-8766-469cd76e3bc9.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 0x21e455542b3eec5c5427db127c07c39a1bc6041d39fd48c3cf0798f050c78702. 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/SE5II2301701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3118d9bb34608f7cc4df3bb5e23ed0ccdcc7d34f0a9c61a425ed786eb7362813. 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/SE5II2400601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d6d3a4705bde5ac86f5231e03730a9c9a6497cd17c57a2a10ba29984ef5653. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SE5II2401201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b39ee7057a17f245945e6fd40bfefdd554f76cdd01b1d22cba08f334fb2e7a. 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/SE5II2401405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb439e8e9405258896a74dc074e62f17cbfb7f10f1d63094492cf6545d8714470. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SE5II2400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21ea5c8f169f8afb4fae994b89a920666d717146ab6e1ca2cdcb521682045e7. 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/SE5II2401407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50146010c97d457f3295854e2d56935dd69cbba24eeccca6c78d22edffeb1469. 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/SE5II2401408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d6d3a4705bde5ac86f5231e03730a9c9a6497cd17c57a2a10ba29984ef5653. 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/SE5II2401201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3118d9bb34608f7cc4df3bb5e23ed0ccdcc7d34f0a9c61a425ed786eb7362813. 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/SE5II2400601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb439e8e9405258896a74dc074e62f17cbfb7f10f1d63094492cf6545d8714470. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SE5II2400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e455542b3eec5c5427db127c07c39a1bc6041d39fd48c3cf0798f050c78702. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SE5II2301701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3118d9bb34608f7cc4df3bb5e23ed0ccdcc7d34f0a9c61a425ed786eb7362813. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE5II2400601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb439e8e9405258896a74dc074e62f17cbfb7f10f1d63094492cf6545d8714470. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE5II2400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e455542b3eec5c5427db127c07c39a1bc6041d39fd48c3cf0798f050c78702. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE5II2301701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff678f4db9e4be040c644b6c34cd217f4e83fda4d7c8809313fed57061dc53e. 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/SEUHA2200401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc8c3bf4c20b68ae9073d621f572207e58be07326dc2cf939f0c233b9533888. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SEUHA2200402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ff8b7de1f4a992a8378289796ad3b1ec14ee097af9e250b870c6d68158f948. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SEUHA2200403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c6d7a5785eeeb8a77cae7fa19a316d5714543cf967f99d6b1426f59cc24cef. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SEUHA2200404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2372993228081658f2d9e94fbf521211030071fd6ae9a35d8ee37c94d76bcb32. Chain 2 (Bitcoin): anchored in block 957287 (2026-07-09T09:48:29Z), 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/SEUHA2200405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc8c3bf4c20b68ae9073d621f572207e58be07326dc2cf939f0c233b9533888. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SEUHA2200402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ff8b7de1f4a992a8378289796ad3b1ec14ee097af9e250b870c6d68158f948. 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/SEUHA2200403.