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 0x456648de6bb1c302205d2e0393e8f44796550513c70e434b1771f5e0c132a51a. Chain 2 (Bitcoin): anchored in block 954502 (2026-06-20T05:07:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9bd4d89e-845c-4398-958d-786926af1703.json and https://artists.proofprofile.net/proofs/artist/9bd4d89e-845c-4398-958d-786926af1703.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 0x03f2459b4b69d374cb9ef0cae34bc6085c28333bdd30ecbc8c1d04473d16804f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU2203453.
No Me Gustas - Disconnected & Enjanzea2 Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3132f2ab89f9e57e645253469657f39fda550754f9267e05105dff7b6c9f787. 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/GBKQU2070864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e57f5716380a180033528c51901713de87325b44fdf09b0cf84aa919d3c6398. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU2054906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc571b220e74168babde7681445dac0e31a22a49ff7de7c35e787e35906c60dda. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/GBKQU2054908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b50e042a91fdebf5d57f50476a53035736650195b1e180fb6c8f0c537fabb6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU2018227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37aad420f195eafa5578a0b454a63cb7a280bd380b83c124ded34df57c9863b4. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBKQU2018229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6c6b1484fa4d50029d82920e0f6047d1172612d6adfaeb1dee2bf0a8b4b088. 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/GBKQU2026535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91bad5d9cc2dbe5ddbd26b1f3a73180d185cadcd4211759cadc158c80a13e4c. 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/QZWFN2419175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff15e427eb41e83d4840eb77b496f8f9ee36c6e75c0e9bada37893ff16123a04. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZWFN2419177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427ddb2413a79833a82dfcae1baf37a37b14ff16b25c4c3fd30f87cee7020c5f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWFN2419178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd388ec2239d655684ffe8552fd0d648d65e53b4ad8684e5099679bcba7b05026. 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/GBLV62307528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387a301e7fb3b9646b22f2d11e9685845aacab0565240fb92c68a07067ed3f19. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU2371382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6662216b3afd096696654569f731aa97a54a84fa19e54109f8c0e22d64384f4f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2011381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a764776a033d7099ab309a1a58a44c6db54c5d105e4398b717b99863257a5f6. 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/GBKQU2011382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e5093184c82169826c501d470d6a0dfb6e8c1f68e5d24464b4a5aeaa02b627. 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/GBKQU2011386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bcd8b48b66cb48296ddba0e5e9931e4b43799832f6f1e3ad206edc00f70ee8. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/GBKQU2011387.
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 0x9de35e0c9ba81614a9982e0f53d7c0ab6e32c010a65d902c1fdbd9ebee7915d4. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QM7282037000.
Simple Pensamiento 303 - Samuel Lupian Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81fb0279cf0edc5181b5cf021dc574bf4b438946895319402d54902bb77e9ec. 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/QM7282037001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251de14b0249245b2f6b3f0a9f21535d5e196424ad251a58f14666229bb22960. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR2039860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5db60585e7df49cfe2c130eb41e1406131053ef795ab0c12f7107ae5a5a2ca3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA5KR2039864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a39333acbd30120593cfd3dab1371720c38bf8e8562394a24f7f51cbe722c9b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/MXA3V2413306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16934f37cdced53332f052caa58516bf132d0fa551d4cd6938496fd9d2d947f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU2282172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6735ffa36a1831ac4d4778b66daa980cc8313eacaf86b01df20782daa5f37c6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM6P42069240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e81fcfcbed5cf223c181dfbdeb3c8d460234bfe18230979469df80e2be8f3bb. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QM6P42069241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea924b69a56b7ad2360cd7b525c30136d368c63a9f13d694fce9ac3bbbcc4d0c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US83Z2496737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44bc41d929e4079232cf95b1084f8fcddd036894a16819caccbded8c68b8ce6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU2069107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c510c78614a72a71a706eeb0292a9d28b312ae7f8777452cb6f65848a87db5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKR6V2381481.