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 0x1f9d32595ba39c953d96fff8ed5b52c348a6385442aec2cde96ceb153879de7e. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f1a734c7-c50b-4a45-ba34-a1cb0e4de374.json and https://artists.proofprofile.net/proofs/artist/f1a734c7-c50b-4a45-ba34-a1cb0e4de374.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 0xe662034a133c0d9d4418a3fc956da8b9f472070c18cd81d82ae8a0102d0a50f5. 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/QZHN72323127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a40b9683b1a2eaed6ebc5513e49ca123fae43ccd6fbb32e32eea3cfa0af98d. 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/QZHN72323128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6371ef919ea41d269413daab196e32f8b9bd07d3ef6a3a62b9e00d7458e64189. 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/QZHN72323129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75bd8e75b821761183363a17b46bd0ca3641b0019df842c8fd7a6f8b1c44990. 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/QZHN72323130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ad72c33b76a7fc611e12f6a91c237cd2ccaf2c9d40a3f530f5fcf191e716d7. 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/QZK6H2482150.
Amado, ven a reinar (Espontáneo) - En vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a5a816f6b562197a2f3d11d732c68997f8bafde2e271714a9eb15c4ed1e5d7. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:02:08Z), 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/QZK6H2482151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227a5ac8581133df408691567c8a40cfd156ff0f97537e999ff9e12d59427cc5. 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/QZK6H2482152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379268a75b1b4cd001e32717caaae7258abe95c70a312006cdcdbdc839515dda. 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/QZK6H2482153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64631e9ec26284f54f59379ad0d89f81ea01035a320002424e1789e4ea55bca8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZK6H2482154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9819df1ca51a23c3bcaf17879f2c91db31482d6a72fc919533a54109d37ea23. 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/QZK6H2482155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a5bdf81fcb04d09504f737f935b6fbdf7602a53fb78d72d397cf4c925adf23. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZK6H2482156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd4947a8058dbb199a20f28cac5ecd3bb215322d78d5c9063890eade173cf18. 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/QZK6H2482157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6adf1f94fd7aff033614b491b9f1c89e372c3939efb7ae79fabe6fd2210a5e3. 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/QZK6H2482158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c29a1f135b3c00b3ca34d65a0fd5d2b992f962567f765accf5c4a4f02ae6b55. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/QZK6H2482149.
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 0xd3fbbd23ed587da08f60339cbbd57578ed887f4a0f85ef1661460966dc70a467. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:59:42Z), 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/QZK6H2539189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20cf5f8d8fceaaf7849e898dc0290103be46a73e71a2e2c8d493ca430367dee. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZPLS2559541.
El Cordero de Dios (Apocalipsis 5) [En vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45f79e1dfb8214bcbfe44ac34ecbdb694f7c6066ec1313f850580a74d0e3f5b. 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/QZTBD2527557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ac3c774508a06ae508990c4feeac50e5bbd4688e746be09cd92a8e567dbfc1. 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/QZTBD2527558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3db6d09abb34245369dd69aac71d61d63b7a194ad45ce505fe0677eec082bb1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTBD2527559.
El Cordero de Dios (Apocalipsis 5) - En vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2549bb31abb3a1f14b5a2c0a24cda6549eafa66ad3db8eb722ca7adf3a6c8a32. 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/QZTB62548946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71aa77ca85d965b1c3cad6d11fb7292287eeb7c8eda26c9baf81d8f16382ea9d. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:02:09Z), 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/QZTBD2527560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed79a973c8f798c6f3a9f89bf7af19e89304f48fc4ffbe4a85a57558b339da32. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:57:39Z), 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/QZTBD2527561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3071daea83ad0299d1218be41d44e963fe32d89848475779feaa87426ef263b3. 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/QZTBD2527562.