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 0x3ef2cca605cd07c24788876dde149c6cc7f671544d4e121fcde3e27d3f4c2de3. 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/aca5bf2e-33bf-4f95-8333-6b4c516d433e.json and https://artists.proofprofile.net/proofs/artist/aca5bf2e-33bf-4f95-8333-6b4c516d433e.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 0x58ea1298f15e8c4a3f3a5460306e0f6338441633e71b4fe1c592fbbecf3bf5a4. 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/QZHNA2340223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7507e8b019311af9c806a7eaf7a419756a3e9788e2c2b184eb78eab33d31cac7. 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/USUG12308231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7730a2b1a89bf37e4dc6801e6c18aa45df310254196706f4879098143229c8. 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/USUG12308233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ca94e4e5ef6941c58b8b65542774868e02cddc2fa0f95c9f73f85a5879161a. 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/TCAFO2161306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8faedad3a350df725a0cd83e283bfc5e432c2395825f556fba5cd9a49f260ed. 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/QZTAZ2296476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c0c0c6409ee7f097d9ade83981b65d7afb2e1daa4e1506b58e2f96cb2dd0b0. 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/TCAEU2096188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f23ed5d2f92893f1e8a7b5570a3dffd9f26ad2347ae2712dda990b06d18297. 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/QZFZ42047755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f8bbd753211a490d0bef4f98857abd72430bfb810b242b9dedb6203f660686. 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/TCAEU2096202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ed95b251eeb48bcef5995d01130409690e4c5184a91886dbbfe9d62f0f99a7. 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/TCAEU2096208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5d8b12c9892200ada113e116ed06b2563fb0f3d86a28a56429ba34f4be64f5. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/TCAEU2096222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0293ae7dea1d9e70078f73bba3a4b63926cfe92fb69e34c9b6216b80a95543. 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/QZFYY1926061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2236a8447c96e562c32746e032e1ded3c0452e6ba8bd944c50f3dc0ca2fa51b. 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/TCAEU2096240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d93985c1006466e95a55d2db0e3aca7121a839436c72dcde7ee8f32cc2e847. 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/QZK6K2320427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2834a97b28d351a4e3ae2eec53490132aa553a1b69afdd6946a96a15f6304a89. 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/QZK6K2320432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f9afa7ee0dc0434aa87ed1f498c2604e7122b8ea7853944a852d3d621e8292. 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/QZJG52431227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5ef93852329bc95401fb211cbfc0c45702ec5780f490c04f3b8d3f348b7111. 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/QZDA42275437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ca94e4e5ef6941c58b8b65542774868e02cddc2fa0f95c9f73f85a5879161a. 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/TCAFO2161306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3839e9c878258a7ebdc7980ef8b98de0154c6c1868eb9406e8d283edbbf912. 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/QM42K1893642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0293ae7dea1d9e70078f73bba3a4b63926cfe92fb69e34c9b6216b80a95543. 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/QZFYY1926061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d9c202ca6835f9ed481e14920bbe740cdadc95d3ee5217d1d247c6f4f81244. 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/QM4DW1746010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398694fa3413bd3d7901589be6b7aaef861d50149d2a552d051f73e3bfdf6ae4. 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/QM42K1608672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62460633fd637563fe1eb7d2f249032ba24d94a930f236bf24a94dbc759a57bb. 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/QZHNA2051663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36395683b5cb4d1aea05edec914c7837beac01eb233f121bbdb05aed8aa941f8. 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/QZHNA2051664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b39f4345b6cc7ab3bb7368e9fbd99c0037ec2bf0cc4847107a394a00823534. 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/TCAFO2165593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955b0877b0b789ad718acb7bc589406503d72b1cfe80ac5a09f09f56e0ab1b51. 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/QZDA71999607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d55f036db72b17fa6e842f82d2c25de500a8fe6989a75707906ae298b685c29. 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/AUBM01900120.
Shoulda Known (feat. VanJess & Matt McGhee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ed7955d29cb7cea0f418190a7c57e8f5715fccce43218e273177cb9d7cb715. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T17:09:02Z), 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/AUBM01800415.
Dream No More (feat. Ruel & Genesis Owusu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451181a347a5256ec7dc7423f01e35d1da8e0410b550f29779e2a165ed26fac6. 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/AUBM02100021.
Sunday School (feat. Jordan Dennis & Curtismith)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c5d8c7461f8d021c0f2a05382b0858fdf21c0001775cad8af863cc819a37bb. 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/AUBM02100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf77ed7ff51a75740113e392cc479e2ab00e15ce6dae57f5bd8c84fde8182e0. 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/TCACI1530077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ed7955d29cb7cea0f418190a7c57e8f5715fccce43218e273177cb9d7cb715. 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/AUBM01800415.