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 0x75057c8ca863e2b3e3349cb617b3693a932c71b8888f3a8b1778f3b38d89875c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2cf83f0d-4a4d-4250-b457-c7c887550c87.json and https://artists.proofprofile.net/proofs/artist/2cf83f0d-4a4d-4250-b457-c7c887550c87.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 0xb3c0a8712f0e49b910a7792cf33a4c3307784a3a5dfd04587b3cbc9a02360db9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZGLM2202975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c468b8707b6f0d9bd9845ca94ca69ebac3ff068e071d5ba5ad64088c5a4fec. 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/QZHZ62219123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2ed303b0038a5c4cea15959bd47b603f10fd87b329b25070775c96ce83690e. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/COAF42292148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e7809a36a3e575d70a80c8e6036bae73710a7db986d455d7e0f3decc95aafe. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZ5AB2394752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b22e919c82a157fc0ffe40eed1086c75119cec4b51bb2af1c2f53d34bb593be. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZMZ92335751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3282100c376e7e95c6fed513dd275d723ad0aea10e307bf6e6a1a0d277787d. 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/QZNJW2355595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce22f4774385c032c905c44a01d7270a51409ec29dce36d842b879e763baf81a. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZNJZ2332345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3292ef5564234677c5996bedcc890550c22b62188cf385250c0ddbb008bb6efe. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/UYB282412003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd1dc6693f2e9ce421035b41d6a7b8d5a865ebc8077e1060344b384fbdbc008. 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/UYB282412004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde08f630cbac998da32ddedbb4015656bf67300c4f6fc55edde25cdaaaa05f2c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UYB282412007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7d81a18d49cc4dc613d17c192430b6e70ba9117d75cbfc958f4706aba9a2ff. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/UYB282412009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7a1cb22c1c2f6dea687ead8d543801ca2da184ebb274c0c420aa9e92b261e8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/UYB282412011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e288ef52ca24227dd0a3db024558ea0aee33685877f0a88127e686a7800b59e. 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/UYB282400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7eedb60be7c6acef7088d5c8c70b11c8383f335c95f9ef62e3b7452c9b4f642. 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/UYB282400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13aa02910c848928cb1deb9a07aa62801d1f48c845cb00b201a1838929f4e4fb. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/UYB282400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf21d27ddfbef452a740135b5bdb2e284c14dc51a877b5fa0c05c0bdba71a777. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UYB282400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4083b3a7f0729b2b05ef68f0323ed977d5dd5c11dfa8270c21ba608869ef5434. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/UYB282400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e055f41601d12c2ca3dfae7491e9a3e4ecae9108b81fbb7df5abf638e9814f. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:35:15Z), 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/UYB282459648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7e7dd94cd968c1690a6bd187a9ec41d582ba498595df0fc03cfc181dc0ce2d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/UYB282446144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e055f41601d12c2ca3dfae7491e9a3e4ecae9108b81fbb7df5abf638e9814f. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:00:06Z), 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/UYB282459648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad960ddb0caf16e6fd0f9db8d64590e2a7f31164c63753d5147222551a1f537c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/UYB282486194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9095112ced4aa64eca1e4e5e0ac1b5ae2d63432e13728fddf7c846ac654f8509. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:53:18Z), 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/GXBAV2182884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7d628e18c2597fe87fd82b24d0fcb700cf5955e8d1ca91ddfcbad82b58ff04. 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/QMDA72215665.