"Sister Ray" is a song by the Velvet Underground from their 1968 album White Light/White Heat. The lyrics are by Lou Reed, with music composed by Reed and bandmates John Cale, Sterling Morrison, and M
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 0x33d356446132955b71145de66e726d41b40743ce7e4ab5f0f74a76fbbfbaf27e. 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/3fdbf9d3-8ff9-43f2-b951-b7c8e5d514c7.json and https://artists.proofprofile.net/proofs/artist/3fdbf9d3-8ff9-43f2-b951-b7c8e5d514c7.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 0xcf5939896a236a531c170f936075746bbea233d023d1f63b68f3df5e142d73fc. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/CAUM82100379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39fc06e120b81d515a5e9263a71433ea7f17a31c36bf0e766e2dd80c639c287. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CAUM82100371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a52767b5cc60e8626ce1fda3e44cf0bd611f3bda48b013a3e94b7cb33c5b17. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CAUM82100374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5939896a236a531c170f936075746bbea233d023d1f63b68f3df5e142d73fc. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CAUM82100379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc5e90603e467d90f33a9fb719d456ea29dfbdcb556084e24ac82980fbe976b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/CAUM82200660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6847155e316408ee9f2e921eaeb4032f5378dbd72bb04cbce83a257fbd8bba6. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USZXT2455715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf049d8779837e916b6b835c83a03621e2215ed8768d09634f0ccc3de2aa9476d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USZXT2455771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6847155e316408ee9f2e921eaeb4032f5378dbd72bb04cbce83a257fbd8bba6. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USZXT2455715.