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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb3f14f6d02eca6ef8e30d950c23e1fdf3c4bb1f01b557227d93de959d08cd0. 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/c879a738-deef-4411-a0bf-d2a08f53b3a3.json and https://artists.proofprofile.net/proofs/artist/c879a738-deef-4411-a0bf-d2a08f53b3a3.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374bbf86c1d1c9a06870b0390f7f6c6de0e46749adc2c44302a313b8a5f81666. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/QZHN42079163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27192159c03e2da054fc985aa8cd6f203cf858740a1001e5a7e51dec7b096054. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZNJX2011690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c30d3f369eef91726c2ff35b1169e0b8fac82bf685d51af7c9feec804aeee91. 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/QZNJX2028587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d0ec4cf667f650a0321f8a2c4a11943ad11c46eae9f7519a2d8b8f7209e830. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/QZNJX2048497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2376b1743e406e15612e0152485c6da7448f1686395a817dbea013fcb8c760. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNJY2039407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4d7129e95e69ff3bfc0ab3b84895c62d3571caf935a6dceb97d9e559b5e384. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:21:56Z), 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/QZ5AB2122261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6d2d60ba0905558db4797f9859b8ffcabbcb058c174ec4a5999fe2f96e3db6. 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/US7VG2198168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca533a01c6d3fc45674fc94275f999e4458fa5cff377968c615f556dc2749f2. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/QZGLS2174609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72affb350b9a062ed7036866d60e2570948335eb1b9340ce20e0908f5f35b210. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZHZ32158341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235208f9a19c2ecad062cfacd94720fe45b254120a8b492f9d06f0dae451045e. 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/QZHZ32166541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d56f5f1e23d2959b42203adcf66b00d52116360cb6a774f6bfadeedabfa5782. 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/QZHZ52159163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49115c563c02d40228bff9ba75c7860afe2167b641d96b326314005461a67d70. 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/QZHZ62122195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57cec305f9b6803074122279737199a4b4f7d5cbd277622dc4287e6b9440183. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:26:50Z), 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/QZMZ92160695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2647fc3dbde30005101c311ba253f7888ade3fcddbcd9e84fed492ed3941042f. 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/UYM122104508.
Si Te La Encuentras Por Ahi (Intro Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b81cb9a66dbdeb7106e5eda6b461b6673db6eea6e3a22914451a822c1103501. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ARIXB2302111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b81cb9a66dbdeb7106e5eda6b461b6673db6eea6e3a22914451a822c1103501. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/ARIXB2302111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63524f2a2d76407f811cd012e17691e902ba8542be2be3275b2618d8541eb36. 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/QZMZ92452320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040a63f037c6288eb92bbde053d58912e5dda2a478988c3c2ff546eb9fecc5cb. 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/ARSPO2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86464453d273d0667100e87115b28c6654257a00a3a8284dd76eb212c4ee5ff1. 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/BK4DA2451289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ab2a1237ade87cad34f850c8fce018c245cbfc23d909a35d447b828a67e534. 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/ARSPO2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4decd88919b8866db6c8ac66b78d662c1c11a0348c66d376dac7998cfb9bb7. 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/ARSPO2400007.