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 0x9859763506454c72b20eb32b8ec33ef484612edc209c1320e1ae195380e65f2c. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f43074ce-3205-4819-b177-2fb84672d378.json and https://artists.proofprofile.net/proofs/artist/f43074ce-3205-4819-b177-2fb84672d378.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rulantica (Die neue Wasserwelt des Europa-Park)
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 0x6d7efb98eac08da7918b0dd04facd3b13e4a4e7ace904b757f92fb3236c05527. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/FRX281961351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8a77e8090dd5e85805dbd3ecd37c47f6ce07a94aeb4cb5ac176ce6f65a9a3e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FRX281961353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26195d6e9d20ac47885832c938d5f4042e9f1b874375d0c75feb09c5e963f99f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/FRX281961354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2c6539580082ba703ea28a127f6a8b8714bfdb01d43d7a2404a0bfa111d6d0. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/FRX281961355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9303fe4900c7f1fcec2e3e4d0fb0f844e3e02d04112378c2613b22387a635a23. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX281961356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0843085d911d312de87ab40c710062422e4cca056bee5539967a1bc9674a9d. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/FRX281961357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121643dc35a2f1ebca283d03b6de2ecf8a6c199d996c814c06174074aa0b3505. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/FRX281961358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2a91d0d7968565d6b0b2d3aff049b20df6ba2f6a1b4dca5e9b4b4baa9b02d2. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/FRX281961359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a6304c079451ea66535026c6bb844fbcac99c12bc6236354a7645f421bbc3c. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/FRX281961361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7681c247431af586f15aa2996dc5d5cc1f912da0ffbe77cdc1e63fd028bbc78. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/FRX281961362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4ca8745cfc5685357dc647fe01a2203e58f9f181c2af31bfbdb3d5a48db6e5. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FRX281961363.
Welcome to Haunted Castle (Based on "Pavane per Laudomia")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf218cb798ca03b824653438e4409040f1cb17df14995f20ed8d55c45b12bbaa9. 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/DGA052056552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416ebe1eaa8ed9f088b1c35b6699ff248bf736fb10ae558f7f8074d583b75fc4. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/DGA052056553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127424c75d243ee7968a5bf7e0518edf9fc269ea673910206c93717780aa97de. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DGA052056554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573d0f5bdee3d973b260a24fbe1b9b57e1b014607405a56fe1fffe5891165e0b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DGA052056556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95682c460ec80f6d6f1531148a1c0b4d0ea22932c35ae1d5662164b6f7d00dab. 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/DGA052056557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e993afaa4c8c24fe4ce6aaaafed8dfa66a19b5005cda685813bef50337be7b. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/DGA052056558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6295e6a01c0d32bb4af60befa68881d67185a95d8522e778d67b63430f2a586. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DGA052056559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451e30b61f6b540845844b16f264038f57b9850bcd8165ad0705651f112d7cb8. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/DGA052056560.