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 0x03c4c85cd4a822314bcc8eae5d009874a348a663490749727fe2c09341225b9f. 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/85c801c9-3a44-471a-822e-adaaecfc9c06.json and https://artists.proofprofile.net/proofs/artist/85c801c9-3a44-471a-822e-adaaecfc9c06.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 0x1eb6d54b3befd4a11cd1b4574dc4905c700b9b535072f6e9cdcda59df09c000f. 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/PL2DY2302681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5185a674a0eddc2d4dc7389631033cc11b5f4ea88fe77ad319741414e32fb31a. 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/PL2DY2302686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72e833864e67f7f79c5b3184c5628034442d614b7d6e88e474bd77327e1706b. 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/PL2DY2302687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2869ff1271ccbf99ab5cd69097c5b3385a0cf60bbe573820c2011c4d6165e093. 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/PL2DY2302666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aadd6052ef5865c4f892205eeb01f4dddd40e80372b000c0a1c9ac89342922e. 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/PL2DY2400303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa125e89a8f6dcc434f8f3c03809bded386ead9f9eda08771b621002a3ff17e36. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/PL2DY2400173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07161ceb26547be140c07456267024bda0efe6e0a43379b6997089b71b50bf1d. 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/PL2DY2400304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ef59f9a362c4dfdd0ff3ee9fc92ed0ecb3cba6a8da95d3b3f26b314e5bb655. 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/PL2DY2302389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2073ba038d8669ac8ccd9c1b1b2efc18027fd5ab47713eafc71aa6c2c24ec87f. 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/PL2DY2400305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a14505a1abccbf70e5c069a5f4db01a2e16819c28a589232cfe046a4083ff5. 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/PL2DY2400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e90530a7637c037fa376f431377d684e9861a430d85c1ba33b082b45ce06e9. 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/PL2DY2400300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7155444cd06a31fba71869a5f94c7ba930682f2dd1ca5197574cfbc1ec5aa8. 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/PL2DY2400306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9605aeb182e2e8029520e88c1a5e1a16afd95475bfa17102ffb01d68ca4fc12. 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/PL2DY2400301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07161ceb26547be140c07456267024bda0efe6e0a43379b6997089b71b50bf1d. 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/PL2DY2400304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0771260a77338684c5fc814c8afcc92c59d0c8c1f6aa8841ffdc0db6cf8509b0. 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/PL2DY2400257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aadd6052ef5865c4f892205eeb01f4dddd40e80372b000c0a1c9ac89342922e. 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/PL2DY2400303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07161ceb26547be140c07456267024bda0efe6e0a43379b6997089b71b50bf1d. 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/PL2DY2400304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948f9239a3ba6c9da2d51e9f57d66ba25175ebef628f88696c8ac4be0c327dc0. 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/QZWFG2495584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819f19338126d644edf856db49eadfa8c6b43a8eba5511057ac3ef45a7c3654b. 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/QZFZ72514933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec460ee68835f741026fb493cbaa414e3a9abdd42a4d178f48ff9bbf9cd0a330. 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/QZFZ72514936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ec6096f62f1b8cf5232b15096b681f961da8851dad5b1e4b9f01f1e90201b9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZFZ72514937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af44d31e3193aa4248dbe1747b0ec169f01e28131d9646f98f910d519a9ee3e. 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/QZFZ72514939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86cdef2e83b74627c404e27bf397d3a4ca82f43b0bbe999ce2c6e1553b432c5. 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/QZFZ72514941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bed90aebd7d4e49d1254d233fbf1d027e904bf02d5f0b94f7164d092efe471f. 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/QZFZ72514943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a2cfba15b5cad83b860e83d7ea4d5da1604207f751544f3d95ce6c5b55d8a7. 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/QZFZ72514945.