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 0xeb3593032e3ec604a0670fb3072074b5aeadc2178439191a1a166ca58e14de32. 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/889fd071-cb6b-40ea-a1a2-c6423eaae067.json and https://artists.proofprofile.net/proofs/artist/889fd071-cb6b-40ea-a1a2-c6423eaae067.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 0xfb1ef4c0b753c6f14434387640f5ccea650f777c1c82ef3d6ec041f6cd158288. 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/BXZGA2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bad55168fe5dd632663eaae8ad2bc760f6f4f9e8488088b3bb2759b75e6b9e8. 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/BXRUS2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ca19a871bb70ffcecd2d22b572cafaba48ca48d7a18848541c1de1c8aee4be. 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/BXZGA2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3292e6fc608eadabca6b52197c3e5f322d6a865024f3539c87e99dae6d8a6b8. 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/BXZGA1900013.
Bebêeee Ai Que Saudade de Sentar pra Você!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2ee008a5b83146cb2be648c3f83d79fdac2a7549ec28862464ef4fe4593b12. 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/BXZGA1900010.
Borel Acústico #1: Ao Som de Voz e Violão
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ae748c2f8e83b8d67c28b4dc36e8b43243b6a6bd5828e9b1b5dfa47881df63. 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/BXZGA1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508811544213eb8e2a0152c33a2853eb627a6378daf0aa6f5eed567e13904174. 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/BXZGA2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54eddef9a040e9533046edab0790a1b5d8913866fbe9239d32062e2507588dc5. 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/BXZGA2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ca51d8492e968cb7dc0b46905e8dfce60c42c54ca9b2c422869e3cbf8b7056. 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/BXVK62200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ddac8a379267251e4a69c2e1638858c5bd55cd5d45032dc8ffbfa2244c8b76. 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/BXVK62100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abb22b0d39a5dc6e2fb5ef9f07d4c598657504e1b1121a3cdf78f73107c8ee4. 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/BCHFD2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e4fd10315f3c4a2832e91c51d52db37f1381a4005c8c497dc66142d43fe972. 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/BXG6R2001406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17caceca3614d854f068a56623fb6d967530c6014a30d455b62d4a283a519876. 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/BXZGA2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bae0c9e004037b6f29dc65cb463571980fa4ef964ef5c52fb6f0096e55a4d3. 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/BXZGA2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f252d018a5625b13391aeee4e389e6418b0e2fcdd650e2aa28788b45fac972e. 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/BXZGA1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728a22631fadf712e6115dab98221c1eccba959bf83d1df22c4ba196ae536316. 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/BXZGA1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adca162b6741220a751603d1ec7e231646b2f0ab0bd8a248c415375b83a6479. 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/QZHZ51918887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042e802ef7eafc7e32f5d84bd5c52d23c63dfe411e6f834e703d01d1756518b0. 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/BXZGA1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27c666a5b1c223a4c111b53fe3549e8aa318098f5c8ade686860e8aa6424882. 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/BXZGA1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37d777cac302f1e32f185462c871bc81989cb9c5c5fea3966c928203aa6ef15. 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/BXZGA1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95de6120ce734fc350da0abb7dbc90231d04ffb2bcc3e3d4145b25b4a5a7684a. 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/QZGLS1969300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18815f64f69e7dc2a65de9225b54fcc51b45d35d0f9673c98074dc6634cc81f8. 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/BXZGA1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a50f23b680d33eaac2360f66be2df48536b4c30a273f819d4a277004a6efd4. 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/BXZ6A1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9005b0e0212e0a8d8c9a890350901991d7d50aaff3b445db52199b05e74fe50. 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/QMDA62476753.
BRUXO FANTASMA (Hardstyle Remix) - SLOWED
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc250c36466544b611542e71522a58024d342355a8282bd6ecceed298857bdede. 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/QMDA62476754.
BRUXO FANTASMA (Hardstyle Remix) - SPED UP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea969e76e6ec1049ff9cc08025fdcefe8ae09b229be58e77631d1370377c0f1. 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/QMDA62476755.
BRUXO FANTASMA (Hardstyle Remix) - ULTRA SLOWED
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc884ec15794442b28390f113b0bc57e2f23eebeba375597bcce7f63ccf2d48. 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/QMDA62476756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7562ad97cb01efb0e09f46cb7a3b6a47e20f777b6f53bd698238aca4fb2bd6f. 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/BXZGA2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b17e1353de8650ed66c1961e0f6aeae4d7304fd111457274cdc1c2ebfa4315. 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/QM7282470693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2be5429499b0355f66d8635da205ec217367a783b02c4eafbc953b1d42e752. 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/QM7282470694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e97608d904926aa1f736ada1365243cfb1b4c2914e786c64f06157c8df0e77. 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/QM7282470695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca4a3ace21e76ff78a5c8509b6b9ed40b21f1ca58ef9007234aaa6b574c2551. 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/QM7282470696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bad55168fe5dd632663eaae8ad2bc760f6f4f9e8488088b3bb2759b75e6b9e8. 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/BXRUS2300005.