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 0x2bc27f53a1294426948fc7d110410b9a76da7975606371974ed61d70a2ae98a1. 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/72a7a0f6-bfab-4a21-abf0-cb9b29a1676c.json and https://artists.proofprofile.net/proofs/artist/72a7a0f6-bfab-4a21-abf0-cb9b29a1676c.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 0x59b7b9dd2abf0241184885d9a525cc051258a31d7ddb481d2bad814eca2560b4. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZ5FN2119515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da9bd67b3f82898bbb9b7ed4457fab4ac044faf7c1c7788786831c5442bcbce. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTRX2125046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505b2f422714105bc5d4a5596af60946b274ec77e5b1c3237cbaa37ab607b8a8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBRKQ2210245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad566bc2b4f63f75db4b0db9f3080443133d12f5306b752469d306bb44b523b. 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/QZTRX2274618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266a88b085838d14770f4aa639976b46b5d3965db929a64c415e42e106ec447b. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/QZTRX2274713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fdbac364ab240c842199959b6dcd278c6700f0f626711aa14a8fde7b558d2d. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZTRX2274720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec814724ad01ba19dfe7881b2dd3e43f37125489adaa1876bbe190a3f7e3e5f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QMFMF2339027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19810b5c004285ccc8368fb4bfab9e42a40e2f3b4b8311d3b3e694ca98ad5d6b. 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/QMFMF2344651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2a85743933440e59d060db9846bcb614d86f0c6595c880e01ce5addbbc74cb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QMFMF2339029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e92f623448920d5c05cc48bb77bb18f525cfb77ace9230c5488669ef6c17ae2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMFMF2339030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca25c10a44d3b2b82ade0704e2f9e072b270613d214422227945da9ea29632f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QM6P42440576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09d4826b5593efe8393562732c575e60666a8ef46fac94f0948ac9c01975cca. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QM6P42440586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ceca6ca477c44eaff9c0ef21237bac55768fe416efa678a418603199a7df0e7. 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/QM6P42440583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48666acbabf41dc6e63781deb08dee107639482521f4f4b2cc7b4bfb0955ccca. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QM6P42440589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a8389818b3c58c9d6ad37ceb2444fd96eadd745027e138a6da58400e423b9f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QM6P42440591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f05bd9db7ab2d9397bc263474b00f553e3d6ae394053e4b05c49a62e490d78. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/QM6P42440592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83abc4feff6827e49845fe593c36ff4de1f470aa92587e94af89d4fc69cc2423. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM6P42440594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f5ff4c8a068e4319c38b4d7efbb36b6f8878a004bf5044cb73d68df686924f. 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/QM6P42440597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6f5daa89adff5addb6512666990439717ce22a1cc67dd614fd38eec84db265. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM6P42440601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ecd5f24774387ddbb6eb59418b5a4c7c88cfadf59f6e94990ddf0d08309eecc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM6P42440605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ea4c3794c3df2f5c127907314012789b99e0193c0605bf31d997c849058255. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM6N22599442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627bb8e5520a968fac00a3f5bd493d557a639a7ea815e7b69c41baa167db502f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/INN2I2509841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be975672497b60f9fa5e04a7e89f9cbae675427b1c6af8d1017440218f3f0e3. 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/USCGJ2205435.
Sapne Vs Everyone (A TVF Original Series Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f35e8b503d8c00603a61f945f47bbae2b12f692b7d6c141a713d83d39374b49. 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/INC442400005.