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 0xa4066a40321b059501623f99cbb445450127203ee435717930b68ffd80b4eb35. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/56c00209-c46a-43d4-ac9a-e6124e65444f.json and https://artists.proofprofile.net/proofs/artist/56c00209-c46a-43d4-ac9a-e6124e65444f.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 0xf494d1eace2f83482976b15c4857f2d284f86faa8531a8feb00c3d690f4482b1. 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/MXF360637413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1605a6e11c45984a5c2e76de1dc7a4f4539ab7995cec893f8801e7edb0e57c9c. 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/MXF360637415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d93a5adf078c1e0edd547c65fcffedcfca4f0628b7479fb8795ecdb0345136. 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/MXF360637417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2279adc19eda67d651a3f05920ff2a3729ccf669f4f1ffc8449a407fd4af2d7. 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/MXF360637420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedfe9ea78a00ad3e26f27b4a9842f6969a2dc52a8cd8882ebad175c035fc274. 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/MXF360637422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7702225bed466966602aa146398bbb1c82b60a1970cb485f946898f945ca0a22. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/MXF360637414.
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 0x42638d0ede2c54897fad17bebf56b2d64d46f016628caf03e479b888fce708eb. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/MXF360637416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9230141b4ffce218969326e981193f52cd1d3be24068cf51cb51b65a7dc8246. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/MXF360637421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d08a5c302d4d6884b9c59b76fa4ad39c9abe62d22bade0815c663ef7e4778bd. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/MXF360637423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb92aecdbc638532b83fb5c26e5ba3a95cf604b93529fe7d60627353a789a05. 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/MXF360436441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9c3e0e52bf509955d3c404646327e46841885dee8d0133c846d0d52c6ff9d8. 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/MXF360436442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4c7eddd8faf65118880552cbf5a0fc2d2f5c685b5e71af1e8a0a2f3672bb6d. 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/MXF360436443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802f52ae5fc23ed3435efbf90c171cc0b447c85d49ffedb9375a1049f4533916. 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/MXF360436444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44684965cde4fc7f0f4ad25419aab9097c0f0b7a4c48f6422ab8e272a19a27cc. 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/MXF360436445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d5ee8760e2b7b8c5ae3d3ef98565e72772b7707806e1381b66438a7c450e0b. 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/MXF360436446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281d08141c1b8abe99f9561e599acde0c46361ba02e0c220c002132a729b7b05. 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/MXF360436447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2a1f04265532fca3e26461662c4bbf3f557f4560e8ea9c617c480ef190d43a. 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/MXF360436449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455c168e526474ced4370c33325333894c023ea81d1aacb8422506f9bc48efdf. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/MXF360436448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fb88f2453bc9b813c349fae52b72bd39d5108d0b5525c3685ecd409e6224c6. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/MXF360436450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73bf248c99a08a392117e625b7fbab4c320f9010b5c509a994be37da77b0256. 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/USUL10500195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6acce64d8c6d330b27d27ccb40f0d6fa6eb4750262a51d0904d06d0e7025860. 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/USEL10600164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bd3a17f8b69807556b6116655f3dbb113216c3d0b323cf5750883b9fa36d50. 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/USEL10700200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac395b0a865dcd0f506fc4f8ebea886173889c1e5e30cfbc8eecc1482b06bfb. 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/USNPD1200128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1495e5691ea1d0eef61719e6f1df3628e8ee555461f2ccf8eead5fe7e1be69b. 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/USUM70612815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fe36b42d311f2c082747b190b14880612d80822278643f489bbeec19137f5d. 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/USUM70957799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a356592f2887d66a71e65752b06404bfe61a77814f0792fe3d44ee6c22cb1aa. 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/USUM70998449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe042e21d6f09afabd026374625abc1d3d2236d5715a3da7b063187baded85ccf. 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/USUM70800266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3386ad90c0338ead295954de6530d94642ff00b23fa30b994f80d22f8a156f66. 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/USJE62409014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eddd5420ac154bf98d4e8b9da349d5aa302bea45a3eba0169b8f040d629c4ad. 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/USJE62409019.
Maiajii-Maiajuu (Dragostea din tei) - Latina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a007c7d589fed35b885543e5186cf28d62eff7e2599be949769ae0bc212bd7. 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/USJE62409021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bcbcd77381886ea1ee9c02b631fc461fb4557e45282a83189938fc1408abb7. 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/USJE62409025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b9a5c79557e24e824e3302867ae883058760140af33aee93f382396d8ca750. 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/PYC842421277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a79ee0e516cb80a20a9e41b860aec7f71ab84328e68d2de6ee5fe3bd76a58c0. 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/PYC842421276.