thumb|250px|A bog in Lauhanvuori National Park, Isojoki, Finland thumb|250px|Peat bog and peat to dry, L'Isle-aux-Coudres, Quebec, Canada, 1976 thumb|Bog in Antwerp Province, Belgium thumb|Bog in th
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 0x43ad95dffcbaab1e0bfd8d426845e0d5b06b3215d5bdd8c5bc57db14b6388ab8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8adab2f1-9cf6-4989-a060-a14c72cc9b2b.json and https://artists.proofprofile.net/proofs/artist/8adab2f1-9cf6-4989-a060-a14c72cc9b2b.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 0x9cbea9fb4c07750f17c0c0ba6fd3bf0f60c381fec74eb54b9a1fb8ef614c2f66. 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/DEY471881084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1bb6c08c0a298ec6a45ca784fd88b85a2e2e7d095ffc7252552531063ad9c3. 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/US83Z1915863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5932223fc05157c25681fb14ebe3531f9ef5046132c148b2be3f13a98d7a4f. 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/US83Z1915864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6386f40d92dcb2afbb1ef68b4981951bf3b765e4ffabcde750735f46ddae99. 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/US83Z1915866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ea2dd7a11180b6206e180ceba8a790618ad18f22fca5d43f00668b0bfb4f25. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEPX41900323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf3f53545a2ae73727a186217b3edf36084c4c67f28fa73f99273ab6698b610. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US83Z2210884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c622f856b9f75be5afd5a82d8bef952f231eebeb7d7cbba65437148a032be7. 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/US83Z2211782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb72c68b79b17494ef0ce17e36344707d8448935ee3dc407c6bc431fd36f7ed9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/US83Z2211781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c622f856b9f75be5afd5a82d8bef952f231eebeb7d7cbba65437148a032be7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/US83Z2211782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe354737d654bf360999a67478ae8d90409580865f954b55c6bae4ef0f390e516. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:06:36Z), 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/US83Z2304676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade2081331baf254cead651a44762e1798bf63f851fa40add51ea88b5c4d9da8. 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/US83Z2305367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411f5aaf8ff1084c10876619685a067ff36ae7cc5cd98852674b58456e83032f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/US83Z2305366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade2081331baf254cead651a44762e1798bf63f851fa40add51ea88b5c4d9da8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US83Z2305367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9a458cdf2bf53b24f4c8936ccd5edc412aa2f2cbf288dcef31a973aeb54284. 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/US83Z2329687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd924aa0c86227baacd9c14cbde1ee222ed8f270a4c0e2377a90011f60e1ac998. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US83Z2335365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abe8c5aa9bdbb001af6cd72994fa3099c6ad0ac1121eb52687148c444af7178. 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/US83Z2470383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901fb53d1a379f286c13e1e78a551a7fc0cb310b186228703325ccf732c6a63a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US83Z2470384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682e8890e4a390b1cc3b556b7f40759b06b1837e50e992cb8313ca41dbe8e5b3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/US83Z2546110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12b8817a18a9742df8843c20d34936d5cee057bace2c8ed37d4e8bffda22579. 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/DEPX41800277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400bb5775555379e256046b867b9ce5d2a250db0ccc770cd8abc71bd903a7304. 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/US83Z2018931.