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 0xf3cf32aba4fe8e21586743788823d8f8923747ecdcbbb13c36654842e6fd2167. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/37cef166-d88a-45a2-9e68-07f7c86e7215.json and https://artists.proofprofile.net/proofs/artist/37cef166-d88a-45a2-9e68-07f7c86e7215.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 0x50cb47588826087037bd2ee7688f336dc1ed7ccc124595f74216fa1bab6a52c6. 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/SE7M72501004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256f8b3db13ea1231bf0fc5c393e22119798ab11a4f6c6f594aded375e9261de. 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/SE7M72401001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda206bd8d1941736f075981e4de0d91b54f8b8a7d7be34c0c3b714ce6af61e67. 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/SE7M72501001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060fa12bcb95b3c39ae863c5cfdedb6278ce6e26c908af030e5d4ed4010c9d25. 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/SE7M72401003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30461747cdc3b509b3b8523aefa02557e8b7a862545d4329ef48041a5cbfa438. 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/SE7M72501005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96119aa241d995b119628594a352104bb133b61d66629391f024cdf9efddd538. 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/SEUM72400749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb321536f5efd98fde621a571264b8d426ef0b10feec00e646415280d61cc01d6. 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/SE7M72501002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe410fc26702ef5462afbffe1e34347c91f829fbbfed8735a0cc0b20abcfb5546. 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/SE7M72401010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc092b524fdc3141b1008bafac438e7ae1d990f65411fd405f0d240f588a57818. 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/SE7M72501003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35a694e23a257c1962446cb3b9b928103f572c49084cb606e6636c90e5b2ee3. 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/SE7M72401006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994bd9cc5e55a2a58dc54788ee9818e63095c35d34f9bd8c53030279c26e7bb3. 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/SE7M72401002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f757ff63564d20e23fc0065452732236a4f4ddfd6c0770de80dafe1148bd53. 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/SE7M72401007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb846a0ecb7c7ab31a6af243f090621f9b97164c74ad49857e8077dd55291aa40. 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/SE7M72501006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3d8e563f7a05562b80f2176d3aeedfa3be5038a33207a0cc922538fc3f10b1. 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/SE7M72401008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd797e7aa591e9588abebfd945303f6aae11e306cf89866853053868c19f51d. 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/SE7M72401009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4e42190349f2bd770af3a21ca7bf4c3c21227feacf0ad6ae18ca53ed0edab4. 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/SE7M72401004.
Handbok för Superhjältar - Musikalen (KARAOKE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ceb864eb2a9ac4e20058b7e55f6e3f9aa83bb80f4653c2ac01c79a93d47f01a. 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/SE7M72402001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0155181e0dc161aede949dc5bb5e327f14f8f25d0de79c42cdcf7721475e169f. 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/SE7M72402003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15288db5c3af90cbbfa97240cc204eef79e5435376f75d295094756a2d9a6d1b. 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/SE7M72402007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4e42190349f2bd770af3a21ca7bf4c3c21227feacf0ad6ae18ca53ed0edab4. 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/SE7M72401004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060fa12bcb95b3c39ae863c5cfdedb6278ce6e26c908af030e5d4ed4010c9d25. 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/SE7M72401003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994bd9cc5e55a2a58dc54788ee9818e63095c35d34f9bd8c53030279c26e7bb3. 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/SE7M72401002.
Boken fann dig - från Handbok för Superhjältar - Musikalen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256f8b3db13ea1231bf0fc5c393e22119798ab11a4f6c6f594aded375e9261de. 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/SE7M72401001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a97d5c1350fb8d4fc187adf1255434fa48d437a73018349bee92fbceeddafe. 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/TCAEE1950545.