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 0x820bd407c7f6c1eee9b4eadf927185fc7bddab38fe4e0ef0ff16052561761367. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2bfa4e4c-3a01-4abc-9569-1039c2a313e3.json and https://artists.proofprofile.net/proofs/artist/2bfa4e4c-3a01-4abc-9569-1039c2a313e3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Honkain keskellä - Suomalaista kuoromusiikkia
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 0x7fa4f1fb550d7e849747a76656988fcea25ceae053e70a45fbc5285e6e0e0b1c. 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/QZK6F2342322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03bb4432589879715bca0294f402aeec03a30531ae73414b04bb5f61a49c9d3e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZK6F2342324.
Madetoja: Läksin minä kesäyönä käymään, Op.57 No.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d9f289a385a102999496ee22012c3232ba1bb301bc8dcd425c36c35f6e9580. 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/QZNWR2290807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759c28063aec917abc22c618ee4f32b29cb2559b2375e630c1d12ae0b9ed817c. 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/QZK6F2342328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8b3c658a2cc7417928e2a9e12eb8c4b4a6dc111e6a8b9af7b7ab0b8a064235. 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/QZK6F2342332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a11302465edf732b651de2085b6f6e9ae94d2e6b413d16fa6c8a304f483a1a2. 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/GZRP42106808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723192d6fb743cb653081b44304ba54216d46d74cb08946ab6e51ea73add1e3e. 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/GZRP42106810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fe49cbf971fd72039f900a001eeb4f04b72fde61bcddf4b3a3922124362412. 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/QZNWR2290811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2772942e505eabb12bde20b61ff57125b6c3d03dc36a77bacef7d3184bb44149. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GZRP42106807.
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 0x2bdea66a37bfdca601a4fe7a7dc821d2e6f3fb069979ce18c173e8fda5c91704. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZK6F2342320.
Madetoja: Katson virran kalvohon, Op.13 No.3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b4923620e7a9bcd307b62d6adc87b9626de1e4e8d5c79cc859d8e9efe9454a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GZRP42106811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ba32fe42f8ff010dacc0e03613b7159644cbccdc4a0c5110546485f6e98d2b. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/QZK6F2342326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a5d73155bf51497a89302da8ccfad98a6212cc8195a24ea42e050e6c935cd2. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/GZRP42106812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbc3631be85b9dff1d55051cfa3abb53e26315b3efc98320b59068cd2450b20. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZK6F2342330.
Kuula: Siell’ on kauan jo kukkineet omenapuut, Op.11 No.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee7df98d779e1e1354381eed10ccc438322c2f0dce78225d4c81903c2a6f891. 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/QZNWR2290809.
Palmgren: Sjöfararen vid milan ”Merenkulkija miilulla”, SP 256
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b267963df5f4bfd347b7276a12c818cb0866f7a045381ec0b95d584b20f29d4. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QZK6F2342334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0fb86aa6a0e99e6e405993693eb3cc4019dc685696e6dd09c0b50af32a5688. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GZRP42106809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf202cda12226b92b372331ca382cb499cd75fe5711f1518a96c6980aa7a08593. 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/FICLZ2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fac2bea7511b1cf748ba9162edba87310088233b88946b8e55d5d982d466f16. 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/FICLZ2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ac6f8653e539ffd4046ae9ba83d362d904ccc728f82c521513f98980e94719. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FICLZ2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b966d649360feb244e59634741e2b52f2ddfe8b8c142497901f19c72ea58a1. 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/FICLZ2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9ac82dd0d6a2562587399f19262c84969bbc5f0194d26cc7fb2bdc653c515c. 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/FICLZ2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8286fa73293343cad247a887a730e49c7f1efd07524dc3b02baea8237cb9677f. 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/FICLZ2000013.
Kiitos, Jumalamme, Kun Annoit Kauniin Maan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229d3cd8ea3b1fc4079f99512d44891498daf04dc358c77f5d27e91837c641d4. 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/FICLZ2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d9401fa5e869683cbb8a915fcb042c42eb3cabb4af5bfe56695bd7466173bc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FICLZ2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d41fe691aa6d349c0b2d1792dd7c2d83c07613647fb064467ff0bcfa59460b1. 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/FICLZ2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde362116b24531588cd639f2429e7c924067cf46d3bedb5f70327f8b8c813de9. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/FICLZ2000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7054e03ae2ea3339b1c1e4b8988df4c4939d0326ff45102283311661f50728d8. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/FICLZ2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf821ffb9745dec0d0d32063c03d11c0c8363452a9af973c6b3ee9dd8cc2c388a. 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/FICLZ2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dec6973031b0061da91196b49545d76ea5aa36998fcfbcbead4fa0e74498076. 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/FICLZ2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0cbea65b74aec11d631f8e5626811f63f6cd129bfee7f10403ebc1045dbe598. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/FICLZ2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05c39fd2a6b422af676905a2e4cc701bb068bc01f7383127bf61f1d488de660. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/FICLZ2000010.
Herran Siunaus - The Lord Bless You and Keep You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29abd3e014d2873bec4f13a6463079533152458cbbde835f8c6fcfc0337c03f. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/FICLZ2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3fc7b79fe8c44db134463262cfad61b29d40b31d6625e140846fa46ca735b1. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FICLZ2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c215d52b3281094de0fe8aa864d60f37df3d9dd79c9a670653ddc4266f9ce5. 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/FICLZ1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bf679e361e812765c57154260596b894a571d2c5980955c1096d3819f54767. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FICLZ1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6aff57f879e96b9d3c14fb62f6f7b30028ce479f5e589e8ec12915ad84e12d3. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/FICLZ1600006.