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 0x907d9481bd47b329d27aac585262f7fad223e276f8ef17fbb792e6c27b4a4ee4. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c3417b1d-8dd2-4736-9cb8-cf323fec4d98.json and https://artists.proofprofile.net/proofs/artist/c3417b1d-8dd2-4736-9cb8-cf323fec4d98.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7b35c096ffbccaaeac3d9b1935eb98894fecff12243172a9918bb7f2efb441. 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/IEAOR2300196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa086924b9f6984fa364cfd6c1d7f843b7f0a6775a2ab063871255bd98456155c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:28:46Z), 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/IEAOR2300197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f7fdbf3faa7feecd993412a72c779c2057f2cea304823e58926a8d73580985. 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/IEAOR2300198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc974b32afc246a65107c3a8f17a2a2b00e0757e997cb841e9210b252c2a33bc4. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/IEAOR2300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d417b8b837af41857f7dd7bea17e7b61f98b56a8df14214cee013954f5b3fd3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:07:36Z), 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/IEAOR2300203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6ca83544ce2de14bb9137896ccfc560d7cda544fb0f235533f3a392fb1ff75. 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/IEAOR2300204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf5b369d9921b96c71b5b0f35c4587304ea9ecfc6cccfba620de6f635ada7c7. 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/IEAOR2300205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b3ae8a815465fbed0221d8ac2911a21c2b73a89c28d8a4be8f61806d4dfa3b. 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/IEAOR2300206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9ba4b93ee0feeb0d872261019009a1eca2ceb7cbae36c7417212238c84bca3. 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/IEAOR2300207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c24b7bc3ee358269c5ac8be6884e859951f6adb35da76eae0db7d881df6702. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/IEAOR2300199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea56f5d7f83ce3f398bc0c7b242ff39998663c7f1bef7e53cf194284892840e4. 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/IEWIV2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6214275566656b07117ddfc7a31a2418b7e2905ab13b389d72cd437b3216d7b3. 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/IEWIV2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29afe0d9526c6e2bb6e95217712f61e44346f872ba2bc5fa392a592e5267fcd. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/IEWIV2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4fa5e7356918df7b53f54acecbadd7f036cb63e206ce1ec155e34ced257f24. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:48:56Z), 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/IEWIV2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee234889f91006288e8561d9a259745540ceeea8c8f813e08822cbee5069097. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/IEWIV2300009.
Caithréim: Ceol Agus Amhráin Ó Dhrámaí An Phiarsaigh
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e854da7881cb4e74d3ac85d430e8a70cf9fa9a4bf46381da5af507ff14894d. 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/IEAUV1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703aeaf3b6308f6dd103a3e7841d8335c7d0a817dea88ca0a7cbaebb7c46dbb6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/IEWIV2200001.