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 0xaefee10fba1df6b1398c2b02c06468f0ce4dfbe30dc426dfbd8a05ca08951c63. 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/2fbabe09-02e3-44b9-9066-b01f095524cc.json and https://artists.proofprofile.net/proofs/artist/2fbabe09-02e3-44b9-9066-b01f095524cc.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 0x7e08af960504940e55fc802d13d6f998a45148729dc492e38b6263d71abf7bab. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEU672101350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0a4883085de7f473da3c4cc6b01d520abeb4c18aadd0e9ad06d8f28db89bc8. 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/DEH742180936.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab21ab9ac4c976f36b4866bfc7b82a64c8823bd6045ae98e942f901a031e6ddf. 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/DEH742180919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906164ea26a00eae5be4e28b45e971962ebf417fa065b619da72155937f78c47. 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/DEH742180925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64adbb4b59806d01a2f7760980ba9ca4ce1d014f187e01c7560273f734dd572. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/DEH742515655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6d1e01c98a5386d84fffc6ce94fc2ae63bebc68db113a654aac0914623c324. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEH742513884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64adbb4b59806d01a2f7760980ba9ca4ce1d014f187e01c7560273f734dd572. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:06:07Z), 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/DEH742515655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6d1e01c98a5386d84fffc6ce94fc2ae63bebc68db113a654aac0914623c324. 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/DEH742513884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dea8bbc0d6f93dce38ade6f0f411f3a45084fd31192bfbf03c287a5d771035a. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:24:51Z), 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/DEH742514608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efc6d0f8d6774b4c94a6e645e4df17e279c36b58fcdaf5a51ac960c923f44d9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEH742517343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ed3bae623ebb0c9f5c5298564a934910e3ba4acf63e7e902db4b95d307cb28. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEH742517344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a193e3ae48883ea9f51782e8e2591394fbb8fc544f2d9aff4d1e896d96ec7af. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:03:54Z), 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/DEH742517345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e0f106363bced96420561397fb33a3df432c5a63c1fc6ffb05fbb8515889e4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEH742517346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe1405ea034078719d5a24d95f7d26a17e75ddaeeb255df9ec0ed062aeae0a8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEH742520583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e08af960504940e55fc802d13d6f998a45148729dc492e38b6263d71abf7bab. 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/DEU672101350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18a95ac22ac8fb6fa5e137744c54f66995359b5923c0c6640d46effbf2657ca. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEH742180929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0a4883085de7f473da3c4cc6b01d520abeb4c18aadd0e9ad06d8f28db89bc8. 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/DEH742180936.