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 0xb09a1d31b4077af46042ee916fe7645d10d3a5da505130b75867b05d2e5fc28c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc1a2f9b-5bab-494b-8984-ae31a8cbc802.json and https://artists.proofprofile.net/proofs/artist/dc1a2f9b-5bab-494b-8984-ae31a8cbc802.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Don't Play No Game That I Can't Win - SebastiAn Remix
Don't Play No Game That I Can't Win (Remix EP) [feat. Santigold]
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 0x25ff7903449c401215f6a5d49c7bd9202f587ba27b4ac65d67db575a053ca66c. 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/USCA21101522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299508cc9beffd996d1c587c1051291a6333bba6d195a3e62cac621ef85310a3. 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/USWD10526681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffc3d32605428d9bf44042a56a44d0b3f7c3a81a6cdc1037d6a79f710bbe979. 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/USWD10526690.
Christmas in the Ocean - Original Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299508cc9beffd996d1c587c1051291a6333bba6d195a3e62cac621ef85310a3. 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/USWD10526681.
Ariel's Christmas Island - Original Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffc3d32605428d9bf44042a56a44d0b3f7c3a81a6cdc1037d6a79f710bbe979. 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/USWD10526690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022908a0bf8722814f65907bc3cc00fee554afce9b7a3df228a3af15901cecef. 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/USAT21600259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e69c2db0c2a91fe97c2faa6d6ef4e0d55da63fac0226b0bd22bb3a3ca8732c. 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/USUM70734366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc0666c0b28399a305e538b7ec04ae863abd9574f28bd1e8bcf553ba8986fa2. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/US37B0601875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db377fd31561ce2a95ba1dd253ab7fc7a3ae764adc1c081b4a597d66fb60f76. 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/US37B0601876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86984d38165edb271aa65b25ecc96a3686ea690cbc208fca592888de44a66f6c. 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/US37B0601877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51854998f4aa1b245c37534875d81f0d604ad4f0dcfd2cb61571c567c3d61735. 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/US37B0601878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e7999c416f9e5f0a26a40d8debeec9e452f419c302c0a629ccf19e03658d83. 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/USY252294556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c26b543eb5f852637959afeb0742fbd72552d7bda7c461c6f1c0d4c58fe55bf. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USY252294570.
Metropolitan Freestyle Extravaganza Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d2287500ce2415d6a690447c302080fe414fc294e7c9568ace6509e7e25623. 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/USY252294589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dff76b176eeba478d585fa672e24a8406b44afb07ec59a31395b40532af9199. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/USWD10321786.
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 0x8900bfc4f816890e67ff91a99e5943c5152ac9e7f32344706fe39397b1a3ef0a. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/US37B0601879.