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 0xc1cb54134359fdd16ad48ef3aae0778f766da50ffe61df5d3b04b4bb7831e858. 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/4350d2dc-3c93-448c-9576-858208fa89fc.json and https://artists.proofprofile.net/proofs/artist/4350d2dc-3c93-448c-9576-858208fa89fc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Toss A Coin To Your Witcher (Lo-Fi Cover)
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 0x2bc1d9b2470f06fb064094432406b691cb135df3d7a0b5ab95b32ebb13513767. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:50:21Z), 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/QZGWX2118357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ec6faddae82fe8a81a5dc081efa0070d7a6c3e073c320c70d3dc8d0994089f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZGWX2129147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a7bedf081ee866dca768b9af9f9c54f59d9bd744a08cb486c3fe640cd1843e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:28:00Z), 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/QZGWX2173845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c04f394368e88bdbe9bb549bfeef1576e1fd32940e862183e83f4f4c6420d4. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZGWX2177375.
Ori and the Blind Forest Main Theme Lofi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3a010fd129b86145e5295455da00fdc9983d43fddea675d5dfcb18016ce310. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZGWX2183603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4488f3675abb0431ff96dcc84133b397fdcaf6c443ed95c2ba528fa528529285. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:11:23Z), 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/QZGWX2128212.
Main Theme (from "Detective Conan") [Lofi]
Main Theme (from "Detective Conan") - Lofi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9760e31627e4538c207f48f3d9d00f3e6c686b6157f847696b6fb98033fa77a1. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:31:48Z), 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/QZGWX2216790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc88a6912dc527ae69b5cba5b1573fc8059bc0014d689b1f004f308275160d0. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:52:30Z), 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/QZGWX2248705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd41e8eac7d81d87937d9492ba251b4e2364b9d6d05aa08cd782c2f3892ab5e. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:28:29Z), 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/QZGWX2246541.
My Castle Town (From "Deltarune: Chapter 2")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa843b76cba865d912995d66970a95f52092e8afe736b0798db9116cebaa09fa1. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZPJ32138510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf233c7ea83cb4808aa87c6c1f75ccbe9ba83be306c880e1f0af218e3efc4d11. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZPJ32144057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e1e23d1cd97c54099053157856de0f9b5778ce708bd5093027cfca1e6d2740. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/QZPJ32144046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24983cd857c0644c67d0b545fed2562877256371510511f53e8ed64e0441cec6. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QZPJ32164922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b14feb0c1b573446797a347b3a2f84d448fdb0f36b2d71cff12d67c4e60c4b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZPJ32177789.
Stitcher's Sorrow (From "Sea of Thieves")
Roark's Attack on Titan Fan Game (Original Game Soundtrack)