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 0xc263b44757491da372187c7b1d2c5988ef866057b424aa687ac0375504bde04a. 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/712142c4-1ca2-4aad-8b26-503f5ef1491f.json and https://artists.proofprofile.net/proofs/artist/712142c4-1ca2-4aad-8b26-503f5ef1491f.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 0x036f7eaf8e5b24b283d01efe2f28d4dacf78da7202b0b10a8a74616f45f41164. 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/QZHZ31928641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b670b29f903d58c325c1b9fe34e20c084a3c318a50bb15c40e64ea2b6bd982. 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/QZHZ31928691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f5cfd1b75d693b4cb7fbeb38aefa48382e1f14070e1e4ddf1dbdc07dc1ceed. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZHZ31928311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16dceae330985cb76e834739a732c141cfb1c299d608393645cb0aeb2f174ec. 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/QZHZ31928314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fd82d7c7de21b5e5576005b8e25c187533bc03d2b21ce17ef77d18ace32d6e. 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/QZHZ31928315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e48239c1f1570b077676aea845768c3425cd3d8f2ed9046457c9aaf7eddd1ce. 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/QZHZ31928316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37ca9669568a13591ecce2b5b5f9d4be27cc2c2e697cb7cc4776231934778cc. 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/QZHZ31926268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26e3d196b89dcd0df0cae0306b6edf8163bc7bb33a285f1d4b52168427dc00f. 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/QZHZ31926269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416499345d75b3629ba54e14541573c0d8759a97f9f90821994647b317cc55d5. 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/QZHZ31926270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57769adc75cd1389f3c434b154db39ea1428f6932cc5b82019a805a2a2b1af44. 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/QZHZ31926271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb57dab2bcda2a46b7fd7136696570738d8fb4a0147c634fe513c22f36d00ccc. 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/QZHZ31926278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde031238c2302043f3fe402277984438b8082bc3123d648a327d4e6772a2041. 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/QZHZ31926121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cc597c7d81625cceaa0aadd7906923c3e0b836c2d60ac8b2e74d15e4ae1eee. 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/QZHZ31926122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1226f769733681513388ec120ca6f4dbe810f3edd0d09ebbc9f2831bfd1d6398. 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/QZHZ31926123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a99b234a6adbbe4c5d81aa7b061b1260be4c86ec96702cb8140de9349a46b50. 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/QZHZ31926124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64aa2902afc2bd5bdb282343505015673be92ffc7bdb8d0ce42381863779c34. 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/QZHZ31926125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d14f031fe659ade264c19225963acd6be9adaa8baee1390171c35ddbf8f72a. 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/QZHZ31926127.
Nós Viemos Aqui Só para Adorar - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1f448e40e61386672872574120f281b9ecfae4ffb795f56ed8b8cdcb5f5eb1. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:08:44Z), 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/QZHZ31926130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bf6cd9ffee5ab1559f54aac02efac68c8aaa0b96c813ac9add997f939dd221. 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/QZHZ31926132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4853d3dd796e3af28f9567651cb487b98ecbb492db848e4a7be9636f814c6a. 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/QZNJZ2203851.