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 0xf9b742f9d816bacda8f81b5c2911f11483ca6dc3efe6615b94e0eb54bbb3c698. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4fef1be4-3475-40fe-9d68-ab2607fa56b2.json and https://artists.proofprofile.net/proofs/artist/4fef1be4-3475-40fe-9d68-ab2607fa56b2.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 0x1f10a2b2ce3f4b4231fb75beff890c896f9b35520481b7fb82b69a442852f43d. 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/QMFMF1567193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2777853a4be813fc52b5e16a366fa8df87dcdeeddebffd7afce4bd7634aca6a1. 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/QMFMF1567190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b3a2aaab1333bad051042d53d014868aadefc252b57f25ac2776c3e71ea28e. 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/USV291420940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd6e2c68e57668c27163f167cb676dd3617a20491f354c3ae88b19161ef04c5. 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/USV291420943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df265674387b39a0526dfd40c1855a6a0f7ff63dcbb8869a941718b75d366d2. 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/USV291420945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06606661f6dccf021bcc1e1f4d50dc0f57b8700256a88297f3719cbb81d2c82. 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/USPRZ1010193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde047a84c9b98f77e28a9ec6da2da27249f8f2a5f1692804836e5cf9c55f9d0. 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/USPRZ1010194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938459535b2beaee5e56ff74653bdab500e3ca897f54db45b9d96cbab17ffb34. 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/USPRZ1010196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2871c657fdf945139a928e63ca9f6d33a13abf03b879134873fd77601ab4b095. 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/USPRZ1010197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9665be76ca408b84746968e07c030693cb8b9f69b0f2e689aea444240f167761. 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/USPRZ1010198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3e9de0c9219c59ff2cc6f25d441cf4cadb03e5bfebf3544b12f7a5ed516951. 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/USPRZ1010199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c6fb7f77174fef86e35efc7397c4086775e5adf87a54c19397fc75669ca432. 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/USPRZ1010202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe455fc8cdcac919717fef7dc7081f6db758706670508f90704ed1afd842e3a05. 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/USPRZ1010203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4f27ec83b82415fccddcef7a3a3ace9a981b30f744d43a7a077181ae682173. 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/USPRZ1010205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90550443b0b78ed248d2ef9cde22caf36958bbe4bb08872300e8db81e740fce3. 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/USPRZ1010056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51701814703c1b57cae70dd33637a187daa8c5e52d5d5efc69bf5de8185661b. 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/USPRZ0810120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9957433766085a11e740b4084b10b9744233ed7da5a922cc56b2b62a4630cad9. 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/USPRZ0810123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fed0fb1d4f65dd25e36d36bb3715431e773a3ce4defa63c64e72a89db6ccbab. 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/USPRZ0810129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01cd821f25bcc2cd84ab1fb0e76d5f6596ddafdb27daaea19f4a5a537938474. 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/USHM91897525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5515b2381449d55f103bfded42733f9acfb2f3f153cc72c0a07acfa978309ae. 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/USHM91897515.
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 0xdc0d440b2d25905e5364c72a752748f5cf01ad6c03dd9975bd32206227f5ce4e. 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/USPRZ0910178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70ddaf4c07c54ffb2b8b3be05c4f28e49f1bbe9ad832c5fc4f970b2ca337771. 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/USPRZ0910179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06298370dcee82e89559373977d853519a885e7515a75ef3fe47107b7b698c6. 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/USPRZ0910180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61cef2c87dd1f7c7dd041c5d128a07760bf1ccff360aa9a0da3fb538bbdabfb. 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/USPRZ0910181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cda8ef79f9725270303ec3fde9ab3edc7b999166bfc95428627e98275431a17. 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/USPRZ0910184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d71e9017fa61a70e2187afb1ed600c1e1001a44d34ceafc47a8be2eebdef24. 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/USPRZ0910186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12aad90b0b8d6fc889cefd9696ec91c8c66aa7c1ce42f17c5e1b2390e7f4277d. 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/USPRZ0910187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9021fa6e88c63382ffd082ac7b646cb6266da1813bc5120e637f363198a15aa4. 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/USPRZ0910188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd398efdd7087e328634315ba6ed5ec7f64cac2e0550b4df8d4995a31c13349df. 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/USPRZ0910191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf185ed9ebc00698ec76eaf5d25ec4ccb37d85992a94b74aad66ccf95875bd55. 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/USPRZ0910192.
Charlie Row Campo - Southern Gang Violence
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070416f7752f941a622e0e93b6f720fcfd60dd60ec8e117b31e8284ce59ba5c4. 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/USPRZ0910100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f0fbc12056ad571a42f5d1bba87b81edc15bd5d284a26f2939ea880d0d2717. 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/USPRZ0910103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d885227708e21781144a704355045ace4894e3e89e01ca2161fba21180f9111. 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/USPRZ0910113.