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 0xaeba4c387eb30eabef0087f6c050ace9b1ef17bb9159fabf03ae3d008f0cfdea. 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/605307e5-b205-4747-89c2-93e47eabeb0c.json and https://artists.proofprofile.net/proofs/artist/605307e5-b205-4747-89c2-93e47eabeb0c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Eternal Snow (From "Full Moon Wo Sagashite") [Rock Cover]
Time to Say Goodbye (From "RWBY") [Cover]
Warriors (She-Ra and the Princesses of Power)
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 0xbe0ed53717b95f87e9c12f0a7a38b2b05d563128812994374da582aa04c3df51. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ22B2068038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc157f70d13df12146d9c5c8b86b1049ea2d6267bf4d62abafba73a8f2354072b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZPJ32116029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93534904a19693d944a0874988572008bdfdcf7e7000b727d4c01a4501552389. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN72220105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a7a8f71da919cbf4f5ec5427327495b677cc11729948ff3c0028953947cb77. 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/QZPJ32203266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b283314793429a925b066091e3f9900f66bd366abe9f272c3a5fb18add9732. 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/QZES81891954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f65245c0d754299383334e68d880c620b3fe60de5949f1a755620301ce73b9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGWW1985547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360b964f2026ab05be3fda92c99bde2841091a3103d406095828bbdf8d2bcbcf. 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/QZPJ32203268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3629d4cfcbdcca18c0a72d5bbc50776c9f6984c41be5d83204f099c2e8b0b218. 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/QZPJ32203265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2da5a6559790c0b11f9c187abdc0b46620bbb15c0d42d0bbb63c920806246ba. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZPJ32203264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45a9d61bb0994207253df579cbbf1d97b30a6787fff5c74a875eb1c69639307. 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/QZGWW1955808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a31654da7c3b16b473b8cc5dc54fd8530569ccb8f14d95664554b184c80d7b. 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/QZGWW2043329.
Playground (from Arcane by League of Legends)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07aaed104fac6ac7944fe23a72c4e8e12fcff8536f770c7c3fb2b5fff416a28c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZPJ32313383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d55ebde1ff570d4903cfa229d4f12b41a4a0bb93a723d40ceded9ccf58137d8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZPJ32379178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb4feba6e0c44033b9b83681ea692dfcc3a7a64f398c0df3820396a40ac7393. 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/QZGWW2117468.