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 0x2ba6aea0109861a6665451928d9b3b0212e05329f9523b1688802fef576bc356. 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/f44d0f66-5879-4a51-806c-ce1b23deb9f8.json and https://artists.proofprofile.net/proofs/artist/f44d0f66-5879-4a51-806c-ce1b23deb9f8.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 0x96dd99e66b26819cb7ca6c497cb2d1d77a7d63ced139bfe4806c5d565d6ae676. 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/BXKZM2200101.
Dj Guh Mix e Dj Dubom Apresentam: Próxima Oração
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bb4d460c74168bd02c17133621d977628524c20f22ec67d90775c09aa0d53f. 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/BXKZM2200137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92dbcc0f52857db17958ef4d20481b4ddbcf0957dda717212b36b98ea59b7946. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:22:17Z), 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/BC3PG2200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754ef153f7e755c532795986f93bc29a4e87a2d4543b2debb7a9529f06398d73. 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/QZNJY2230674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9f9d30dedf62c465c902636d21ef7ba8e6dc8d699ad658ae77c6be82a2bc9a. 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/BC3PG2200152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81539d3fe4a209827acbdb21e70e88ff3557f1ae329bf1cf5e2c5723e2d7b448. 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/BC3PG2304858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e665daee3c86d37fc573905ff4548f2d0e2bb556226998240f1515f022261f. 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/BC3PG2304905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c76c325d5a56bee4caec4d47712e968faa97e87b07bba0404799ba35e69aa2c. 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/QZMZ92409025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde0116bfbdedb8219efcc401f4aa80da653c8eef1db53a812c0da6abf6ea28d. 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/BX3SG2300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ac7989e6b823a35af53ede46374216410486f3c45b02b0a9c6544d2065c596. 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/BC3PG2330740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5edd0d13d490780f7aebe7ce303038ff0dfb1fadaeeec7b3a9beec30e2b90d. 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/BX3SG2300238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06b2f6c0edf505ca40c9c9d2ae74022bec97d88d375498723a46094480abe83. 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/QZNJZ2346177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b8685fe32e9126ddbf689e9c039459cbe3b6041a9a43905bdede36fba2944f. 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/QZNJV2333335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea21d56951733cc0b6e988f29debadc1df998bdac72fc68513c00888706f941. 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/BC3PG2304636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca2ec21653024ed720cf0823f47b9b72b3c58f58d594d79df2894e644bac44f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK2242400646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa73d0f7e744007ec334436434a0b8e6e86320e51c0bc4706122fc39be21165d. 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/BK2242401572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e9540f33cb68b6d40f86b46e16b8edd564ee843de7b6eadc810e89e554af0a. 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/BC3PG2331043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64b156e71c8e9c433a3af927231914d9a3752fe85966d1dd663de042ddd820e. 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/BC3PG2200548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36151fe3f03b80b7e5b9da20ed1050f7bc1f3e2cb63ff9d11fda9cedfb296c0. 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/BXVUU2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f081d6b992a5cb2c7e8bf640167ba2a7cc7a77bc3ea9dae687e9413e722169. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BC3PG2403507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8bf6ff7a5fe7121259b138b4964b3f38b39892ad4f1e64cdd3671835e39aa1c. 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/BC3PG2200428.