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 0x9363cbf94864718d18550bd65adfac6138ad5fdeb424816880470b9d1c20d1dc. 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/3a6c8139-1b2f-4f62-a099-4fba269c6354.json and https://artists.proofprofile.net/proofs/artist/3a6c8139-1b2f-4f62-a099-4fba269c6354.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 0x2d8c5c1b18cef88cd75cd6b5204646b21e0563ba8b5cb5ef19bddbd3ab646479. 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/GBYPD1000142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2152a97a47bf0b74b933e66bebdf2de40abe71ba17efd998bff70862c3a5f9a. 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/GBYPD1000183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84357b688f49adaca796145be5ef4758bd3e51cf7d238aa450dc1097a0e59d8c. 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/GBYPD1000152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bbd703f20b29d3e38480d4ae3648b6d61ed7d860837af3f20309a4abf3dab2. 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/GBYPD1000151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64d98225f78201d80d3ca57f8ebf34bff817f2e857adaf7ae3e0b5d2feb75fa. 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/GBYPD1000150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141e93fe13a892b0da899fbbcb349a33409400a4c28155efd094e39cdd6ca472. 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/FRX762166381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27d7bafe15a5cddacb492c78dbdbced7ee17aae0e7a14a8a8d8e70a8049200e. 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/GBYPD1000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4ebf96cc4228618f896f0861c07a8a298fb54344b7425a54aa4036f6396d11. 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/GBYPD1000138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1d634d0c635d44605512af2dca924a7762a5b564e96090de0c48d42d0f5be6. 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/FR96X1986271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e1522bfe286576e010dcb5d25c7b4f4a6f3578a598ee2d0e66a002911414e8. 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/FR2X41891913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7a1d1e17f74f6ad71a077c16e08dfeebdcebd3baa5dc568d467cbb438b4366. 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/FRX201714119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff13ba049b9423c9eec0f53e26217481fdb1e5cc2972354b504b68d7b2a96e00. 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/FRX201714120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd4e7fe00ac1c7989cce90c36239847b40accdec1d9a507a777f4f86fd4c271. 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/GBYPD1000095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885a5b48ede1e16be5f5827662fdb063b81ae728ff3fbdb69824e454c58e964a. 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/GBYPD1000096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5954a5c08da21f7dd0d2f64a907dc8809e7fe9b53cb088594b902a2cc3c7c8. 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/DGA0R2314581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1179d597c30f2967e5122af51735c562b2ba2cd11f50fc1a6d510af5f94045fb. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FR2X42415214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80339ccbb2077ad5c062f043cc6efc172f65b45f7ef422a2948d2c88f1f77cfd. 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/FR2X42436518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cbf50b5e4f7eb26629ff663fc7257d2b603103e390defe4cf11c84ec0b16ba. 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/FR2X42491710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eefe0bfc2c8864d22f1b3ef99879c97a9495e750d4208878af27e4370c1f624. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FR59R2455073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41f565682a4136e23d4cd5662f97d1f3d5332cbcfdbcc5607a8d3d9137d2d85. 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/FR59R2480295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec12f75fe1bf5abbbbe3372d695a81d448de947c98c2fa34820f8fe202aed0a. 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/FR96X2468754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde951d77a783840cc438a906fe8d0c76d361c464eb51fcee7ccda6de3f502b71. 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/GBYPD1000161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70354ef6677708742b36bcaf20ed6e182fb4e7d3692fbbd9284c1d7e0d88f11f. 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/GBYPD1000174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc9c09d4e6e95906131195573b898f59b7280f88ed4a57b7916e9e94f9d8917. 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/GBYPD1000182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52229eb34a07768902b63b1564a882d81c8f42754f1799792ce0ffd19d5628c. 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/DGA0P2439651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d2218b1a027ea183fd2393dd2e2751541bb0d787a6826c7975c0adb54bbac8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBYPD1000184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5954a5c08da21f7dd0d2f64a907dc8809e7fe9b53cb088594b902a2cc3c7c8. 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/DGA0R2314581.