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 0xf684ad5485d2dc6dabb6bd9ac01af6586231e1341634f8ebe57781879ce0d09d. 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/7c8abe6d-ad67-436c-ae50-dc15b5b90b3b.json and https://artists.proofprofile.net/proofs/artist/7c8abe6d-ad67-436c-ae50-dc15b5b90b3b.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 0xa5681cfddcdbed02bd8736792640a2a8d46125dffcffec0a7a9ed35f7202c3e9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZJRC1962649.
GOODWORLD (kohaxy Hi-Tech Remix) - kohaxy Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f4428d3f60642bfa296daf637e9c5c4ea3cd91d8e811398ad5e7876bcfe73e. 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/QZJRC1962648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9805ed49083982792d5f4fb8baa652a644acd1321a4d791f1cf5c01a82e27c6f. 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/QM42K1934751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d15e8fef278bd0dd656a8b19d0328f2518c2d36a93c910e27783afd25b9e057. 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/QZJRC1962642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef364996158acb6b519b3772b8f6cdd49a4d95c0d13f58964c8eafd41e02b943. 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/QZJRC1962638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06dc04183ce9cd237976d511b6822003ba3d6d72b2925709d50e60fae5700c3. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZJRC1962646.
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
GOODBOUNCE (Drunk Remix) - EBIMAYO Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5987d5c36e8dec6e309add8b325f7c4bca15eb613180ac15d06d30d3e58749. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QZJRB1965284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f45b2c6762cff3bb03a24f8da6cebc64657d0045dcdf6fc74b539c97bf7db3a. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/QZJRC1962645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f978615110a84e087dd8159f1b70583d59c45607d16496ed560f928f0016c0. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZJRC1962643.
GOODWORLD (Hardstyle Remix) - EBIMAYO Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3631b45a09d29152819734d7101f11cb5878e37dea04ec144f2ebe9c47e5c26. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/QZJRC1962641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf62b53bfdd1a16ec1ec4a892bcf559b62d7efa9eea93259da92fc9de45a560. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZJRC1962639.
Arcaea Sound Collection: Memories of Wrath
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2352d146a5163b5e56a20c7a9083c5c08879577d4822bdd4fa078d27ddc4da9e. 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/TCAGF2286590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d6f51dfb70f155d80c502ce4976640d196068f84cb0e2a9ec7dc0b760773db. 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/QM42K1926790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad20a886473290db4fa589d302f8b0c1a1f872751811123e4b63b7a82f6bcdb. 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/TCJPS2242773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3cdd3e05ce1def370280e24a7802a690561fd7c70a4a74a603549e558a1bb6. 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/TCJPL2028603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc188653a1a99dedb885ac9033bc6653e8aa2b59c98c0c00e712ee28977f6409a. 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/QM42K2220470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172bd619a6419f64ee071f6d520ca4c0e97487761d8c5215980d1bf221c80fc2. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QM42K1996321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521d63a567ff05a3486c36b9ae344f9a3d3c961ebb985da846d751e2ef79b242. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/TCJPS2242847.