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 0xff0a28626ddca13810c1ae49feca89923317b7c170f596b762046c43f3aed205. 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/5d896f5a-9b26-4def-bf48-42a4fdc26888.json and https://artists.proofprofile.net/proofs/artist/5d896f5a-9b26-4def-bf48-42a4fdc26888.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 0x19dc95034949f46f017b3ce8e01efdfe0141467dd3af62dd8236e640325aadb0. 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/TCJPV2373138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e44727d45c3829986a205ab7d80c1e20cac2f8da38887222f8a84125728161. 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/TCJPR2299048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04361c4c998ec3f7fbd1f07e32cff2b8cd971619144d0678b0c5042ce7befafa. 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/JPS809915818.
Arcaea Sound Collection: Memories of Wrath
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11073d371ee802fbfad404d208594a1545c5387e20a99d7e0f3dd493b60ec9c7. 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/TCAGF2286586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2566f68a33cd0bbb7c37c8e1a7ce9e9d6dbdf91d6bdf4058412ef5873e0dc4a6. 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/TCJPN2169289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4a47ea527b98ca14e224c5479a1726c8e28aea87b0a90f7fa1e8c0e5310c3a. 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/TCJPT2218004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be24ff9d9830291524c4b36d975954dc183c9b42f7eb1bd2c8ec07bc6b17ce5. 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/TCJPW2316774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd5e1315c2afc7343b469bcc017a7dbab9e17c9875a8f127bec9230a25380b8. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/TCJPU2210650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cc8a67b2051e302d3953715bef24cc072263a27fdf506df1b40ea291a87e4c. 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/TCJPY2499512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07b5968aacc9fabd63ba3083d60d5d72366761f9cd647fc127681e5f819f68a. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TCJPA2454624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb9cbe0f680c174de022512bbf47e305772070fc8a927288f87c54b23a8783d. 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/JPS801850514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb953056587351fc1fc13528816c14d28ab0c7c5b1d4acc8fc81fac1f34e568. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZMHK2229312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9cf6276763712430a0706fe697a64219000bff3fb5d8ceed9904427276ad1b. 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/TCADS1872250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1524669bb4588cd397c86e8e5be7947aa5c7ec319a05671ba32fc6120a57f7b. 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/TCJPH1861055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392c43b12bcdd179277d70cf1c8528cd077f5164b5f3fd606e834d1a23eecf80. 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/TCJPH1861059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc86101800303f744c44682b35c346a059764fd25b432fb5ecc9cd7b8a70dc1. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TCJPO2190696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c86944fd8c634ae85bd21fa22a58bbf43a744b201ea16f314a3c3eceaf9da1. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZMHP2327704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f1ffdc483bafb4b703b8384ae9fc027e89338895f6ca4766ca4278ab0c41cf. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM42K1992542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96dd090036af1bc9869536e9d94e1a8174ea00f62d2d76507587390c76ee21d3. 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/QZMHK2030913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c86a9f5ab45076a40b5c688ea8078023365b1ef0d8f60c10c75dff7da6bad0. 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/TCJPJ1946886.