1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa72c80181fdcf9c96e0906ab290a65c6aaf845c63b0c83d80c8dd454a46759d0. 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/2411cdab-52f3-4ee6-9cdd-4d21eb6358bc.json and https://artists.proofprofile.net/proofs/artist/2411cdab-52f3-4ee6-9cdd-4d21eb6358bc.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 → block OTSBitcoinBlock must exist at that height 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 0x5c7f8a119dadd89e5bd9c3cae7bd8c6d9373d901c5f3eb4812871ad29563bdcf. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTPX2399569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f6a255bb192117e4435c42e12654837815370bb23f33e24b6f40e091c09e86. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:54:22Z), 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/QM6DC1751423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe715ae344786d378d3ed6f4728b25e603c6e2efe5e2193726fd00b8ab568086e. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QM6DC1751424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d0ee8b3082add06f8135946965ef00dce90b37e6b01422bff93f206a9be0c0. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:13:53Z), 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/QM6DC1751427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1c0b949af47d0fb479f2c6db39501d8565e8df9bf4a5111a538824ba5ec768. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QM6DC1751429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28e0808b7876d369f606993109873f71a0591c1aa94e4ecee70ebe7e97fdb3c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QM6DC1751430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2248243c5aeb9e4dc402490e0c59673226baaae2d9a808cca2898f072912b6e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM6DC1751432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ded8ea82d68d3fa69ae3f9c076eb3288b2bcfe87b43b3496ab2c67eaac0a51. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:12:08Z), 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/QM6DC1750797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d4b59bc6320624904cef76f72a27977a2082f3df3dc4221f2678a78920117b. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QM6DC1750800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe8718bafcc8ea6c709518f5d582a379d6ed70a874ff00e0bd560362eed9cb4. 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/QM6DC1750802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79308f7f5008bfe5b639691aa430a287f0afc5f8faf68e75f31b163dc4757cde. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:09:05Z), 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/QM6DC1750804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a179c28d4e01fad3258d5adf63014118ca7ea589505cd93bc37a5b8713af34. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/CA5KR1974942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44f4061ded35b97968626e9d3705c962c4e0c437b208e03c8665ed9b39055be. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:02:08Z), 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/QMFMF1904696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d35082abb70fff3f8821ae9d396fa1db330af5ed829caa1a50ea49e2cc7960c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QMFMF1904698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94574a5d81bd687711c5ca174dc5946ed65d04e9efd57fd00c110adea48f152. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMFMF1904701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533596e57b8ee968660758943ea8de2a93c8081be4ba8addb26af9d040eb2c6c. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QMFMF1904707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6690f941b139f342b3893f1be147160be7e51f2ec31571fa482b880d2a451fb3. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZNJV2114534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47ba7c20c807c86e6479014359dfa7cf5b947adda4b9121712e18c05c7782ba. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNJV2114540.