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 0xdb715977607e634d9f61e0172bf8198665e81628d42c0adc503840eca6ba1b90. 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/67f30e4f-09ec-438e-b632-1186427c1288.json and https://artists.proofprofile.net/proofs/artist/67f30e4f-09ec-438e-b632-1186427c1288.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 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 0xd61adfaa62bc2daa423a1876f2ea273641fcb05ddfb8189d52252ac07922db20. 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/UKZGC2306864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecddd671e4bddc205e549f3d50894aeb9658d78a9c5813133934bfda2df18f6. 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/UKZGC2306865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350af097a3d5fad4221b88b8dec17e8d101d8f46800e8233addcb16daf2a78e3. 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/UKZGC2306866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb474c8c43f6400f0d1d318b0ca09032004bc7ffcb86a5d00463484ffe35e083f. 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/UKZGC2306867.
Hope In Our Reflection - Christopher Galovan Rework
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4b7b207de96c5c1a65493f2b8b597bc0668a6020c8244066c03779bb0162fc. 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/UKZGC2306868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb474c8c43f6400f0d1d318b0ca09032004bc7ffcb86a5d00463484ffe35e083f. 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/UKZGC2306867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4b7b207de96c5c1a65493f2b8b597bc0668a6020c8244066c03779bb0162fc. 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/UKZGC2306868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecddd671e4bddc205e549f3d50894aeb9658d78a9c5813133934bfda2df18f6. 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/UKZGC2306865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350af097a3d5fad4221b88b8dec17e8d101d8f46800e8233addcb16daf2a78e3. 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/UKZGC2306866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b7aabcef5420426f94cece9fffa35905b40df256f6bc6fd6fdd745856e5cb1. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZHNC2411194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80362d1aa2242304d4eee8609312b8866df869b1a2b348242e8bcfd5de776a15. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZES92382287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9504f024bef68cd2bf0c381fba8433a1bfc5a7e745ded738b7cdcd9d0889cf. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZES92381424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf761e34ffdb70df7383a1d6c0e1d054cd52bcead8ccccfdfd027558092aabaed. 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/QZFZ62372624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe115a0e896f915b5188aa9a33e1403ce30e74bd665d5640007e790f9be0a30b. 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/QZFZ62339728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29d67aa382eef6be00ef22757039da4a5ffc813a400a08bce6767e311210afd. 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/QZFZ42374579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7260776a1fe2467c62324d80accb7c142b16a0f39fcab6d834eae753f36901d. 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/QZFZ62341852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0488be400ef8a51efbb22ac9fc8929c3f9d6682f36eb779807b55a7c842e37. 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/QZFZ22351211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e7487f9dde23a27dca43701e6b5b67eb32a1b0d01e371cf85e076bd153322a. 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/QZNWT2253334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fd262500c632223ae111d77c7586cab40ca57bdbe417d56f9a2e3ab643366e. 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/GBRKQ2155943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57ea494997c0d15ed9de803a0a73585f3fc0500b72a5553b96684435e222566. 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/QZMEQ2021901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4978ae28a3a21e86c825744fca7b00dbe3c6430b9e1365cb03f89c1b4d8f8fa6. 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/QZHN82034072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f28198966748eacb496cad718dac6b710eee6376b412638e804d6938f6447b9. 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/QZHN32096460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473e07c2e1cb11160874c5541cde34e05d347c4584a7589a7a100b3d38e150ea. 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/QM24S2500579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd9323adeeb8c6f8e7c9b92844f414109afc5790a5d1736a13c1973d62eb161. 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/UKZGC2410140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e966ebd226db6975f9749899034cd9e0fcb7a7f98d199ee077828a213ac114c. 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/UKZGC2410141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd31e89ed0b6c48bc4d1315a9d10d04f0182dcb0baada7d3aab8584848edcb3. 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/UKZGC2410142.