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 0xb67a2a7bb98e337d37bf8ec9b3da451bf60d0d02abf024eb6d00a1762207d8af. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4bbbced3-9d27-472c-b97e-1d46751fa5ee.json and https://artists.proofprofile.net/proofs/artist/4bbbced3-9d27-472c-b97e-1d46751fa5ee.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 0x77dc10cc45bab9c6d91e2c4e3f8c7b453f4397e1918c1c960609b2a36e0b0aca. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZMEP2201081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f80fff8f8d8b7860f34ab780f701d6d7d15fe57ae5edf774973fa624038b1e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZMEN2298745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2abd1e8ffa86f0abbc106bccc261aecc91bbc81aa028ad407bf4ed8d270e03. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZMEN2298747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ff96649d7d3a24619c9669d270fa8986e5bfb804dee7fc6884dec5e5745a39. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:04:12Z), 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/QZK6G2211495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1799b9fbf8b873aff0e199e15c01eb46afad10df5fb3db9770a8f8469b1d29e0. 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/QZK6H2226989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf82158f573695722a0145602a79ae3d876005b58cda25d099ed01ed4d094ff4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZES92345132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c46db1267e2f92a48968c2244fc1a5e6de12140285391f16ceba50a55358bd1. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZK6H2225787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2221fecb405c716779a1899319df02ed97adae68feda30e24799848e2fa63bb4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6G2211496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92594ab05dcb49b71347afdcbe462d776a17bec081bbe82ab15b004627ceef43. 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/QZK6G2210034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aef180058dc60a4d9e7543851e3bdd5d68759016ecf0d3927b3e2e781abf306. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZK6H2228214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501426f3a7e0e9882f26dbffda974f1cb0a17dda24e8f41b22225a51b97f4101. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZK6H2226990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe440e43df08cfd4e3fc874c3cbdd955efe66ac5c370ec7c3a74f99f6ebf289bd. 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/QZMEN2298750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1799b9fbf8b873aff0e199e15c01eb46afad10df5fb3db9770a8f8469b1d29e0. 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/QZK6H2226989.
Santa Cruz (Carlitos Rúa & Edi Manrique)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa21b6c72b6274f39422cb04177d29654b7fce7ae7aa07f8fdbbe7832a2a69ba. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/QZNWQ2218361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ccf4143468d7838b7ebc6bbbe69b4a46bda4c69bbb485a88919d90ba4cc3cc. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZGLM2380617.