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 0xf940702ccd7bff356172352515ac17c34d568a8be286e5e634a76525bb22ee6c. 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/8e170d65-7c1b-484f-bbcc-e854fb4d29e2.json and https://artists.proofprofile.net/proofs/artist/8e170d65-7c1b-484f-bbcc-e854fb4d29e2.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 0x73ae385d179d14d524bbecbfccd59f7fc7c7c0dc7abf946eda766128ddfe7802. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZHZ42028351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e6082df45e2b92ce4d62ca7a4d49b9428d199828f99c55e1880c264c4e18b5. 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/QZNJX2000306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b40ca1ec75895e2c06867ffe45e98b2cb86f0ce0bdb5be316f9ac0fb6391a5. 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/BCIE32100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8cffd4da027d5f41859117143feb67a35c988b3e1e7a4ea39215c1793e605ba. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:46:56Z), 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/BCIE32100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e16548732e00f0bca36d957a1f206d1ce9d038588d6259d7a814ef8a6d98dd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BCIE32100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fbce923029e26f9ce849d71a77390fbe315976334303b173cb9ac794b28486. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BKNIU2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fbce923029e26f9ce849d71a77390fbe315976334303b173cb9ac794b28486. 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/BKNIU2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885d77125d43963e11414ff0944ebc19b73ea3aacd4a4d876653d0807fd5de6b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BKNIU2300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53d449e81fe46d870bce2d6eacac6780d3d7cd2a4092954f7ac5117ee014e36. 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/BKNIU2300035.
Romântico, Mas Não Como Antes (Acoustic Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683d823bf1b7cda0c5a41625b5b0f70c0f203c8bd0e29ee7799e21f5ec3f881a. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:46:17Z), 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/BKNIU2300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ccc3f2826b75d24f52c3d135febff8c72c4da3bea27db0d290b0deb760541b. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:06:03Z), 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/BKNIU2400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9bed5da694a95937c47cea65c2afd18a8d8612b8e68bbac6ccc6149949c272. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:58:55Z), 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/BKNIU2400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc828c6bc5038acefb38c9fa660b7aa3123ccb3e133f612939fec60e35a5a3352. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BKNIU2400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa017e8cda0871f1e10f4c112f7051079663f2081254ab4b1a1581f29724adc45. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BKNIU2400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168f339e02b19db0788604a2bf619f279dce9e069cb906da612e98f86ac30b1b. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:44:49Z), 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/BKNIU2500078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290a99725bb71f1f0c96e1543608711607fa48564e81879424c077a64e2b645c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BKNIU2500079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e6f7716dcc4a9aa86b684d44cc2f79b0ee3bdd14ef38ba045690cc132a88dc. 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/BKNIU2500082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6accccd587cebf9c2218dc6acc5e37ad26f05ab301677db2849606cbd8bf9bc3. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/BKNIU2500083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32dacb6640a7690955826f3db1746662bd0c7d9467638c8224ffa661f536d344. 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/BRD1E2400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32dacb6640a7690955826f3db1746662bd0c7d9467638c8224ffa661f536d344. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T17:07:06Z), 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/BRD1E2400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7383b0a217745169e8e20908da03096a58cc13e163606a4d75d7554f0246dcb. 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/BC6M22407406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d4159da37853ed9be69d0982864a2a73421c33fa9ddf36c1b7a0c769bd6a3f. 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/QZTV32424737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294706a5cf628900ec6e20871415104c449096b51cc8662500cb4c1bbeeab73e. 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/BCN5Z2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294706a5cf628900ec6e20871415104c449096b51cc8662500cb4c1bbeeab73e. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/BCN5Z2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26bce12e3c1f4ae3603016e62b8145d25d722dfb3e28d9e6aa70313efa4d64f. 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/BKVXO2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee7bb6e36f9d09a9cbb787a1c9a246b76389e4926e73c42f4acf350acd5f62d. 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/BRWMB2500545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46d3536e2cf9e92b8beb6c53273822f2df23041685e4672d4eae11d57508178. 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/BR5TG2500017.