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 0xb0f864290c8d022766a4f00906c30f1b2cc4ae701c77727d3a4d88c4f50f0679. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/adc1ec8b-4ccf-47f0-a22e-5a27f5730561.json and https://artists.proofprofile.net/proofs/artist/adc1ec8b-4ccf-47f0-a22e-5a27f5730561.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 0x3cfe18ca56dc887b1c5822566c4a04c1cee3bf52f824c45c528d2558c110401b. 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/USDY42089120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea545d9c16ee7aa297af86c13b534532fb0a0dd008f218d76a5c8ca1d00d5a0e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USDY42089124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc908369b15a9b392eb0cdce16b017a118b687f5d5d415ddad0331c9966ce75. 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/USDY42089126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5954202d58ba678f90cae8cb71ea70d2e49359698e5e3bd353b19c0a1272cde. 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/USDY42089127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f01b0a15e904bd39d415f2eb2934b2f43e3dde7443473a2ac970637c99c516. 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/USL4R2015039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccb0429d51ce7f516368ac279ef45dcefff7b6b8ef367b6b786c32062269be3. 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/USL4R2015036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d8c8e8ea466c300284c476b44f847c4c0812ed44b8aff93a889964398af71a. 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/UKXN22188704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87809d71fae92ec470ef1891ae20d310c34ba38357c3c8caf077506d68a2ed1f. 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/GBLFP2028160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc734df466e8aabde9268534338f19afb984cfefa6f8d95d8098cad8a83b1cb. 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/UKXN22188722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b4b1281b54266741e9d5a9e2381203094a1e8e985e10bf6ede99ab7abfc298. 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/UKXN22188724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed5a059fb78c15ec1e3468e98b0747e658ba63c3e67f9b584f90e76c98d36cb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKXN22153315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5971a8cd22a6f75367bed2d0cffc4ef357a21a25c880bb11cc252ce9a8ad90b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKXN22188728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7cbbeeb26c8f31e1545433f506c2f69dfdf3f7b769915345c970b6e70660506. 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/UKXN22188737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f5ddd4dbfd162fa231e4c6832d199f8ffdc5140dd4adf143dc04adcb67da82. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZBRF1890351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9e847a4a94696e412ab247343dc8576ff8ef9d5a568cb20d3f285d4ff1ce57. 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/QZBRF1890352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00058699771e4babda9e65afe41ab9eb0fe74169bc6b68f56c6f2cdd2b9cc406. 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/QZBRF1890353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b13efa0ae661cd17db36c6d109acf52b4f635bee284c1d5d347c0a423bd177. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZBRF1890355.
Cantos de los Comcaac - Tributo a Chapo Barnett 2