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 0xd68950260550fea7b34e922f3ed8fb1da069c4c1f0993e9a2713c82c9162d48c. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/945eb69c-abdf-41fb-adff-8391cbbd31c2.json and https://artists.proofprofile.net/proofs/artist/945eb69c-abdf-41fb-adff-8391cbbd31c2.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 0xa6870acf22116fd2a0bb9a2aa9d779440c7844466a2b573e0492cbeec11728c9. 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/UKDXP2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e240097d135075ced9ee844ee410125376a29e798ec7270af0d7ea97cdb06d. 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/UKDXP2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1528546eee10d8c5d4fdbc0d8825656ba03aca0c7f28b08b0b1144df186cd305. 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/UKDXP2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c75545bd0f31bad4b77a0453d75139bdd267593736065fad879bd80fa54162. 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/UKDXP2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a253410105854de689f108df401453a5df3234895c88b8a84881d88cd32b25. 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/UKDXP2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb5cfb236e68f292c738f76e165a6d7e0724099026368a24d110f491cd30b08. 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/UKDXP2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bb89b68392efed0c286b3dc75a6c73307d960f064233d707871c81eeeac752. 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/UKDXP2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ad06ec701a145859cfa123e86b74166bf3af9c336147da6ab75b375fb85438. 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/UKDXP2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ef25bd84ee9cf5371f5adb0296cd1dc9ea2b617b69e335f944ef42f9cb7bf2. 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/UKDXP2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3953bb17beed3b85f39b2ff0969dcd6280563989d472ab68673f860378b2c8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/UKDXP2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f3b280cee978ca638e3b221bb0242a6f6d731175a7aa91f9c3ac97128ec4a4. 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/UKDXP2100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57ace871d2a43f08b1430fb56f70b2df2c3745ceef5e0baae55ffce1850446a. 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/UKDXP2100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0645221be4b25f837a97402aeeec08065006792cdba70cf75ebacd3bd72169. 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/UKDXP2100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5141dfac172c6316a34f5de0b53a6ec0a22ba64b78c897ef4a1944ad0c32e6b. 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/UKDXP2100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39a0b895ec200430f896fb009c705c7543184ffd7e9242cb888eed5e6f7f1cd. 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/UKDXP2100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf79dcf1faf2aa4b02ac9eb0c712d6428bee6d3f0d0450cd86bbadec96e8eb38. 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/UKDXP2100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5196f5030cdf4f13ebc5bd064cf42d16a27167466a87074a7a8f72f55ac071bd. 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/UKDXP2100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77283f0dda9ce4ff08abc59e16f28c7d3f4609433a48a314dbc7282c08a26215. 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/UKDXP2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb736116d5eb5105b1f7e70c4d4afa984f538a71396977bb5bcf9cdcd575593b6. 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/UKDXP2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9007ae21fff36251e8719e4ee6bda8aa7dd8bc651c311e38c41aded0dd3a63. 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/UKDXP2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f50758c82b7e935921e8954d35da1a5148f1c8707cd8bc419e9722f91c7e58b. 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/UKDXP2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73dd384d78b56ea47b863b646d4e3aa605eb5147f6ba1d03616615297d51eda7. 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/QMEU31613421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516508ca007b3ba3c61e132eb132a8b69acd94f76cb6c8691e257946391da07b. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/QMEU31613416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29470b2ca5b69aafe009285fab15806a11d449c8b983b13a24f9b8f67d4df76b. 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/QMEU31613422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcded93da8f711cce4b93e28ffec96b1b5ea955d9df65c33cf30b38f490f876c3. 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/QMEU31613417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd700759e06f74331650d5d4c61ceea5781e3456fcbd55c0e814b06d9e758520. 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/QMEU31613420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a23c58c76e82fd823d94cd5537817eb61820b6f4a92e39bf8138ded0f090bd. 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/QMEU31613429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f59896768c3a4f5cb7d7089ea383fae5a740dab137771a5780d614999167ad. 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/UKDXP2000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fdb7dda60c06a3714f267d5f55906c55e035a0298820f1d825f931764926160. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/UKDXP2000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77283f0dda9ce4ff08abc59e16f28c7d3f4609433a48a314dbc7282c08a26215. 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/UKDXP2000002.