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 0xa64df8bf29f72b38bd00f6f8488e1139f231262c618800b1daaf083224a4c6da. 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/17280c56-0f8d-4f78-8420-f9071734136c.json and https://artists.proofprofile.net/proofs/artist/17280c56-0f8d-4f78-8420-f9071734136c.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 0xf36399fcc53466800850b2a10d5192ce41a9116405faf85b84c6e3cb683a8645. 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/QZFZ72345724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41221bdc68e5ba0615471227edac99884ff4351da7389afe76fe125e35555a5d. 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/QZFZ72345726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8787fe7bb2c8490d90f4e757cfecd144580c5933a067d5b7dc7ed9d8e322decc. 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/QZTAY2477156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0edda6d5f59d7c376dadc711ccf6500e69e3541e735d772324635dcca117aa. 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/QZMEQ2448630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba8cf72ae72d5be784575a3f6f13faa27c004aabe36d196925cc979c6c13e7a. 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/QZMEQ2448631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c864c32b4c4efd6bd92b12fa4bc2dcc25499be022f6ad94f348b4c371bf22a5. 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/QZMEQ2448632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebfe2453c7e757af9607c4224da8b81f877a941cc6f83c36618adf22ac00ab3. 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/QZMEQ2448633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c1c54d93d18ce7d310c49c6855e4ea8df63dfd49ec34d4eedd0b883fa86f22. 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/QZMEQ2448634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97c804370874394d7c8b4c720c01fd33ce2ac58844e9f4513241740c1099546. 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/QZMEQ2448635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f552a41e8e1c37190e85b9bd6ce3c5e94dbbbf8fbf0e6c3cefced5752e7d9a. 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/QZMEQ2448636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bb6884b78df6b0765aa461264266f192c167ddc913f6afce45176a515ceb22. 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/QZMEQ2448637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2244f416d0861bd42a922c7be2b387c07c32efa200d53bb1cce6f4c1b45c38e8. 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/QZMEQ2448638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3730e0638c44dac424dd8d7c4fd114a4e26f663fff60a3ed8af859ef16e7db4d. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:25:25Z), 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/QZMEQ2448639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9a8e349ae5a100cf6d127464dce183619b99da150040b3c684834869f6cd8d. 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/QZMEQ2448640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9cbeb7d2dc8db0b813f864de290b4d31019f31e6ff2c0ae3692cb01d52585f0. 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/QZMEQ2448641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa581507a7c85ad9d7e3f0870258b286ebdde3d4e1cfdf284d1362dbfc47b36ba. 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/QZMEQ2448642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7f98e49c60b9f6eb060b7df1372fe36e346e6e826fbfa769b5ccc1ee3c5c7c. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZMEQ2448643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3717c0c2284613dbc2853207ac1b03f79eb5100190f8867ff343f1fb8a571ffc. 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/QZMEQ2448644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed74a8e1b64385b1a3545bbdca5bac7fb50290296c305a5e0e3eaf31de20d55. 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/QZMEQ2448645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbc197be3917bf2d5710530b93346ebda692b3b173640a87a052f3271389014. 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/GBKPL2010564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8592ebf654c68bb5c4790b7374cf02fabf90fdf41b374b30e6238d4ab21cc23e. 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/GBKPL2010567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158fe420f62634917f29cb058f49988b0abbd82e64c2be681b16404102ffac72. 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/GBKPL2010569.
Ghosts 2: From The Other Side Of The Moon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9d36787706431667ef7423611970eee6727d779ed42682a3cce7ba190f37bd. 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/QZFZ22549509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e84d47e54ddf57b574987618a5d8ff2ee0b2d58a7aebfb877b67119041a8d06. 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/QMB622116301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab76435ac1526fe6d4ce719dda166d7b25d2cd3d11d93a73cedfafdedd81d29. 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/QMB622116303.
Don't Be Afraid of Monsters (Bell Towers' Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa32549aa96462e314638d8cd7ba0c65a8a927f7337e23d5635f20a9882d496d. 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/QMB622116312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8755ce68f315a1f0f347457e3abb2d550f171e7e67c11cf33c0b272c66c8da58. 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/QMB622116313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f0e7b538d4026d18a1732052166f87c1a52afdbf3481e3f72d2b2f514d39a7. 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/QM4TW2001737.