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 0xef6a2084566ef767ca5e297aaa25f0e9bbdc2418c28eed8222844c4d0e132e95. 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/7d400385-87b9-4243-bc8e-9adb3ab9abfe.json and https://artists.proofprofile.net/proofs/artist/7d400385-87b9-4243-bc8e-9adb3ab9abfe.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 0x60b8b29bb2bf8e26bca268a1158fcc1361532b126a3b6fffe3331b04d6f771ef. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZTPX2251995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee510ca34ac1f5f988f453aefc33bfc4fa11aa363ae459f782b940d490931f2c. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZTPX2252003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22609b5c5a55c87c9386f66b15acaa7b9ab848a9752ce20c3cb1246f150d255c. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZTPX2251997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3c714373046bfea32460c2437ac129b89b1d6111cea7840423c50534f686bf. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTPX2252002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa501bceb8cee4e0f4e17d8d03118ae2874f740c530943cc6bf7d9d2faa79a4. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZTPX2252001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba156096de78569d7a72a3071f3345a4c8e374827c97acb7992530b53032f1a6. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZTPX2251998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbd1f26daafeb86793df911e6bd752c2284311104749ee1ebc109450fddad8b. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZTPX2251999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911830ac3a63182162b359d3f0ff30ae2f06ad250b45b852aaa7a754555f73c3. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZTPX2252000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29f2b87b35cd7a8d04d6d3e82fe601e1f9e981e8bf1ae5c0a67323800f8c2f8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZGLS2310765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4974bf04affdb38e26d600e054d2b221c3f0b384988ec580444c94df492832e. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZMZ92331643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a1256769757d8a9284bd721b7a49c2e354209d4c2c37eeeb1cb127d5453dbf. 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/QZMZ92331644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe090dd833c02b186e7ef875020d44b1397cb08a1278117247e2799a81d5e39d7. 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/QZMZ92331645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428ab12f5a6c51d1a40379a3f2a19d7122e2cc3e40f4d3b65b9dca0b54f60f69. 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/QZMZ92331646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa15670ec4ec953d37cca16d3252340dfe9d70963c8ce4cce6b2a3e6f6ef7fd8. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZMZ92331647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdc1495eea68d58d9e1059471d45b5718aa537aac23ecac679eb4c836fb0efc. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZMZ92331649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1916ebf1b0e4045f4614df417be1eca7ea412a020e73012ff4592a46c45dedd. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZMZ92331650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d442d04c419331a9b09909a0b65e80961fb157938616091bbf6b05e0032228. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZMZ92331653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f538e34622265ec8612fb19fade37c45e299a777fbfd6cdf299e53a6e3c8820. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/QZNJZ2395370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef4b39b02255d071a84734fa84e228d19359df47fdf609e804ffdf3a92aaadc. 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/QZW9K2393810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643ee8c1c4fc491d7cee43fc2f236be5f171f2b6f6cf10c6868af2020ae5fb08. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZW9K2393811.
A Incrível Overdose de uma Garota Quase Morta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076b9eb65a51542ea4d1a0593235391470eabdd74cd112cffbe2db9935d638eb. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SE5752416171.