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 0xfac698e3b8043db1986c59d386a6accb26764503c90c39ee10ab158a089753c1. 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/629b4d61-3e33-463c-b4fa-27711c387230.json and https://artists.proofprofile.net/proofs/artist/629b4d61-3e33-463c-b4fa-27711c387230.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 0x85e5c1dd3ca6d3b661e5f25ba60dae040b62bf711f61a42fbe578d4d62fb8e31. 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/USHM81809942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86e4f8089157c0c918fb6095e4ccf8e2aca3f74c3f7ecaf8da684194ab0462f. 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/ZAY361800494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2479c5f2b6b05f10e283c0ba12f28fb17860a9f58402e4b8b46d80452bd443b9. 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/ZAY361800495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa86fd8d669f158923a0df868d0932615b63acf8c942b513ea926ce4643d3a60. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZAY361800496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3789f050195f38e05b6d5cb01ef6a98c8ee34a63a6f6b9dad2c9fd202b708437. 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/ZAY361800497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa7c62385063834cf24b315ca19e0e1361d33437105795f6714993f892ed7f9. 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/ZAY361800498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287713ef8673ce205b483718f0b9aeddc1b5f45f3921d142f6f19c59ab3d875c. 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/ZAY361800491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc91570c326191b81ea8f762f034eeb312387625aca9520a6fafff10f7bb42b. 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/ZAY361800470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2b8e83d389626401ebcf9e3fdf1a369f576324cc4f0060aa3d40aa98d6e0f5. 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/ZAY361800500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65909b120c9058dd0c667c949881ea50a80cef207773313baae24b19ae58ec3. 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/ZAY361800499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba82eae84f829b2a7afc7b468f7fb58a8250ebaa0d626db34e19868fe1c8aa0. 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/ZAY361800504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1659fa9c521b3c85ac68999cf5f9a8f84174d5e3777aa47decec20f5c8bafcf. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ZAY361800502.
Samba Nabo (feat. J'Something, Beast & Spiritbanger)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43063b1c5e161ff6741669c8cdf3d00b4412cb491862c55b97eb31ea969cb36b. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:38:35Z), 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/ZAY362100693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b310d03aaf562a13d805a3a14d21650df85a34cae68f5887ae20d78472d86c3. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ZAY362100694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc45d717c10d0725202873beac27ef049b02e721a217dd475e8301ab0d19d381. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:50:21Z), 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/ZAY362100695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a66a5a1e332428566a9abb053e66a1fed663492d7633b4991dc59798635133f. 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/ZAY362200780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341c0ab2531212cba49e393092a8b71c5f8bc533f859a20727eebeef7eafab1e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZA7IZ2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5707236c93ad7b8ff5d67d5904eed65b3811cac929d01a5d68e09c06cdf3a0ec. 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/ZAY361900547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2c69d5acd5254b63d52efef2e7c871028be49d0cac3d30aa32c7c8e18b52ce. 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/ZAY361900539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacb84089883d3c4752cb6701219c6648e344bb4b020910f600865dc70613ba2. 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/QMUY41800171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fd3ac21dde705a6d4db3f584a7231e3acfa3ec02116a8db74c9e25aaab0455. 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/ZAY361900532.
Muntu Wami (feat. Dladla Mshunqisi, DJ Tira & The Elevatorz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45203b8eb0a12746b9ecc243811ae50d25d47899f00392782fb3e3756733dc55. 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/USUYG1515918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02743fd57efebcd9a44a605fe705840334fd3bdf356998013a8a6d0d3d4515c. 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/ZA22Z1800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e708ce6a0d9fd988181dc579ffaf8da50fadf27c9d8e45fe5004ef10b86540e. 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/ZAY362300877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d36436feb5795f5df387eed4f2e6630549f01c0a7ab69f8b9ba428808a6e3ee. 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/ZA22Z1700003.