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 0x4de3262fa32b91d8676b213dde026f2dcc20dac26eea709670efa846f203675d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a425aec2-b17b-444a-a62b-b549d493d1f6.json and https://artists.proofprofile.net/proofs/artist/a425aec2-b17b-444a-a62b-b549d493d1f6.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 0x025dd518b835164912e1cb080c0cbaa5bc28861801ebf8ea2dc18654326ee427. 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/QZDA52046125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc153582390c09f1689589ef1721d4e4a11e30e5eef46c09cf867b597dde8a704. 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/QZHN82057830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3663f7afefae771ddc5d8d9a917cef7694e3fc3d0ec9247cd53c1f115039f3. 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/QZES62081829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d37c4ab242230083535eba522c1d567e277d6c091130a1b0c549c15969ab5ea. 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/QZHN82057832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc9ae601285d7e1a3e071bd1aabb4f666062a0fa4c722b95668c34eb9c03e9e. 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/QZMEM2031845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f88d128d8b92e231f65f976a3788e78a7798acfe5d74476b3f718e1049c0c9a. 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/QZNWR2040502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c338ebc1931e88940de3c31430b4b135f36f61780c75365cb0d138958c7021. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZNWU2060698.
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 0x4a19016d9c9baf952380e9ee0c5a046fd0c3ae01733e288604e5abdafd5facd7. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QZFZ52013817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3212b39d09aea2b5aec31b954fb7830b6d071023eb7a0bba87d3a96748e535f. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZNWR2040501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbefbc537058d0aa09abe4c97d2154cc15ff98c59b1e33200dbbd15ca1f45f08. 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/QZFZ41914295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9801ecfd7baa4a91e40306f69f8c17d94e58f30da892a6dd7d7d2a6b6553f0f9. 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/QZFZ31989117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab38f0fb74d820e3bdfe431907fab3c262eaa504d3194cee8854e8788514edd. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZFZ31997746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97ed6058decb769593df11d3608c8ae2da21728391b13bbb9059cd16a2e416d. 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/QZES71833003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda32f940049d6c588b71c978d539b6f18853d3b8f3e133869e6f2af9a84366cb. 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/QZDA71834812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c236535357bb5d6f06fd0500cf07892f66a239b0870010f4ac84fb4b766c4e4. 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/QZDA71843911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86eb1fe9c3870d40bd1da2a77e783f3ff78e6c89b548a28ea84543360cab252. 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/QZES61809170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bc2a5fdf4415a85a362e6c15f5f1b7004ea38f0df825c756bfbba682740317. 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/QZDA71843947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2713293f6b8cb64e2c00eb5d86594a23c10b8edb9ce045c4b69be5ae0f2fbaba. 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/QZES71833004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641a834e7804af00f8850e5c3b3ba9dde339aba1ae83ac349ebe1da445153de0. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QMPKX1856308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9481ca380ea6e9d0b5724ba824d2cf50fe69c2c48da16946fa4ad2500c37c6. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZES61851753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677ae9f5260b50e5769d700d0410e0d31c7c883d58499108fd069c5e5407a423. 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/QZK6K2318255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5224f5de0b681d9b536a4ac5480bbaa73209f7548fb77bd5a8232834781d16. 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/QZTAZ2256998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826be2d54688f582d5f692da25678cd5eede5d2495a9217ae6535344e0fda0bb. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QZTAZ2256997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b255a07796ec103918685f125621cc11789f3e2bae6d30f0c26f4203f7ad13. 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/QZHN52254048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c50af971072a5148eba739c3dbb0c68db979efd0c54128a88ff00859f6d145. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZMER2107432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf37beb3f1a5edb1ed2c6d57d89e1e5ef4f207e4526917b8017b2247e3eb3f8f. 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/QZFZ72143481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132d6267258f303d8d78b6122042c615425ef5c43abd849e825c2676c8451ca4. 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/QZES92074493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7b3f2e9c4fe9c70deaf570c9627f8b7844f019f248d6b7b60d473c890b3610. 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/QZHNC1957232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07ebd879acc65a33e29a18fb72dffffaa29d7a43f9587656d00680bb111f25b. 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/QZES51984822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ced1eccf2c18addaf7fff434adc9ddb673aa530a0f4fc645753709fc9e78c1f. 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/QZHN81976143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a10b8122f4865346f586a0a54ecff28b0943d062338d1cf6166698f29f097f. 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/QZHNC1957234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522059874dee5b170a60a3d475f9348079e0e5e5be77a3a60a178b3078bac071. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZES81817383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e248b227af95361e74c0fb828fa71fdf8b65a528d4d43f73757891810a2b889. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZHNC1957233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a03e69d656032ee040e4f47eee3b451b4bc5483ebccb74e3d33bf869e8afce. 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/QZ8LD1995696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06eb68fca08f3ba7c6a99828d9f3b9a8710a88d5b9a114d68b606620fb9fe96. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZES91997143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2bc51a6a9c533e1c081d6f2f805b30cc3074ecf1d9f53a1898145cc211711d. 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/UKU932360222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab7f6e9d14ef2eea5d8405359011a6725cec15c366462da9b1107fd65b3704b. 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/UKU932360223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb375a21e4084b3aae34c31d9c94053f61d52aa423b43ceeec957b1af79d6f09b. 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/UKU932360250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47d73786125a9da87f65abf1ed372a28ebfdf98bd4a9fb75001db6c7e78b0f7. 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/QM42K1966683.
Beyond The Clouds (Almost Vanished Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e6ca6d9435a9edf07c86e52aa92a38d3b4cd8aa2234dfd131c7134171a761e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QM42K1972034.