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 0x9ccf4ebd04716ceaa05a5fcb242b0d1e7040742176fe44e43f0eef0f9cfe4588. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28878129-900a-49c2-b4b0-fbbadfedd767.json and https://artists.proofprofile.net/proofs/artist/28878129-900a-49c2-b4b0-fbbadfedd767.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 0xebf98d73d466c1efe2067769b70c0304cf8f9ae1377063db1ac4b54b7c6765db. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAFE2093359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efd9cf31b4ef8b5087330a8cb4b640410772c7131c65ecad077a3a686ac1ff4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PLC062229560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e21b680841b71ffac902221adde5ce06363923dc3209659cef33e42d860d063. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLC062229561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832ec33d11aa51098b4e96906011ac67a874e63d037649bc54e396977ee18ccb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLC062229562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d71ede99814c5aa54b3a3f23f4c7d88beeb7bc0276083a4a70d38d9c2d186a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLC062112496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6552348b3ebcfc20297cb20709e38d0e0b5277bc33b6e8538c3cd5e115c945a6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLC062222352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89b5f19ad099909e9edeb024a08998d78ecd83785715cfb2b9426325facd783. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLC062114759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1373831ff63c47daede97b9f14f93edd6516baaeb17f32f27d1a49fd2cf8c01. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLC062113272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26afa8ac4891d15a427b579cd3b18a3c7344629087fc08c82318785983c255ea. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLC062229563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03179ab6cdb3c646d18ea4124e61c306477a12248edbc9733a243ec926cadc5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLC062116298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951fdb25308cb6cd79e3d419428aa616ac984e892458576607f16615ed92c46a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAFG2054497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1783c63ce6a469cd5a2b3e59a3e2482e8cfcc2df73963d580799663843cf246f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLC062114398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab94a7d87ad4c3dbe8b402ba145ce36ac9ced518f16690ab0526a7cdc51901d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLC062226132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1a863384ddf665a0d80c14796c437ab2675c60c3598fd6a079adc605240e85. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLC062229564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd61181efdcf34c522222c9099e92e3d06e1e1862df588d29c8f22cf63bacd2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLC062227996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27df149dc6be8445ebe1b87d83a0fd0697a64970bc745031a946ea09beaf3fd5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLC062118477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571f1f940df6d3e4a639f94c664b1e3cc4783da8b43e37c8a53084019c444a16. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PLC062229565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1246ff3cb4ec59350bc79a6a4071e8b7609018f7cd6ce6fe44ea16c5e8dca927. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLC062229566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed009ffe461648759e88e9cd9c5fc9c5a95623f6cb328fe759fc4b81191d8906. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLC062117087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68b2332c053b7ffe559f216d86c54d0cad6e7f48e7ed84599cb30a562fed026. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLC062229429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f25546392845880e9a856a2dfa854a6d12b5775f6fc04661b7d648114d9eff7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLC062229567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a52eecee1e37f455dddbf7c9ccc6d80dec61c0de281a2977dd830eebae8c87e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PLC062229575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa231ef47d0fe31c0a5af13dc608d48ef1ee96a99ed51903c6e6610ca04c13543. 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/PLC062415972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9459c7715291362b1646982ed0477778ede05d130afc5e06c3c07150c6b5a6e9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLC062429530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892681dde38fa78ebb148804a47c6c1d9dc2d4ad5b9506a8dcd081f0c94d5d2a. 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/PLC062422632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137a5951ccaf9ee41e1e093ba6ba0f84d5e291f8112616be6213abac0ee4b40f. 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/PLC062419276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5ef9f8410dbf8d0896629266ae679340bf8945b07572139eb0e06ef6b4d433. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLC062429531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeaf4176dff04ef46f3a0828ccbd7e88c2c0b9ecb76c4bdfd04a2cba1a5f2025. 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/PLC062421678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873e8e4a2c18e5d2a04bb35a0a328f142be826b2c59f66ec466584cc07db8332. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLC062429532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4e4669747d3d8a1acbc34599f4a32eadaba632f2eb349504a8c56f1450a4a0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLC062429533.