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 0x541054a14f4e5dd608142667f332d95e1923922d8823cecca119ab65ca87416c. 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/b984b9e7-5dfc-443b-a4b0-41b3aa63214e.json and https://artists.proofprofile.net/proofs/artist/b984b9e7-5dfc-443b-a4b0-41b3aa63214e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Highly Focused Selections Mixtape, Vol. 1 (Continuous DJ Mix)
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 0x1071a294fd54cd034c47d187f14c8bcbdef5bc79b0c3fea3bb3cbb51889248e5. 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/GB6ZW2200653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87457c9d1b0f72907d33466779c5c45f782766165962c4c7f85d55705a874f89. 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/GB6ZW1600751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad24f84414dc5c6568911b8df6f30c50f634656859593468ea4474bd2c7da60. 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/GBGZW1300265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855445f7ec375f21d303f9cacb7bce23a601b476d22cc87dc63937d2e1a731ee. 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/GB6ZW1500492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2463ca9feedab952f9a8bb746f4de41692a99ef022250bb55d4bec870e2736b6. 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/GB6ZW1400328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffe8b3951bdee58252101a907837a7b3b4a03ef98f5fa1d2405412200d629e2. 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/GB6ZW1400338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f00dacbfebd837c5f99f111cdaa30b7bcc3a5411e99b2cb82e645883dbd999a. 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/GB6ZW1700116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f00dacbfebd837c5f99f111cdaa30b7bcc3a5411e99b2cb82e645883dbd999a. 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/GB6ZW1700116.
It's Gonna Be on (feat. Dr. Syntax & Sammy B Side)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4230c2530a9cf0a30d40a89d8d7c87a07b4b37deadae08eb991dbf9d0854345. 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/TCABN1392233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad06c2da2b59bccba1134becf3c5567661231009ec5202f584bd2ce617a7d0c8. 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/GBHLW2103533.