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 0xa0234071a6a41db6947ffe9332af49c351dea8f5691e10fe5a87fbed320a2756. 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/346664b6-4546-4143-9355-af48a5ecec3b.json and https://artists.proofprofile.net/proofs/artist/346664b6-4546-4143-9355-af48a5ecec3b.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 0xed555bf806671378d8a53c6f7e7b01445611a8db21c9f3ba842c73e9d1d7ab0e. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GX3Q92528272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55e1bee1cecb22f61fda8d5e9c8b7ee59ddc201c1c0e47cf795c5049dd67e07. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:07:15Z), 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/GX3Q92528273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0861e735e983d4b76f614908859c197ea1155145f7e337ea84983454c11bcd. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GX3Q92528274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c114e93b00ca1db736e3a2fe7c88389ad47178413376fc1eb393c8d909e31d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GX3Q92528275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e80e09e68bd922256debdb6255f776fbc8878a0bf9889cfb66ccfd42834b2d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:06:30Z), 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/GX3Q92528276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f0f0a86dc36f7818ac48ded667351822053bee6d44483efaad840ee7708298. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GX3Q92528277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38488f231931f2ef9a3412e6cd6b118fa8a6b911829624b8336e11c437f39a25. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:07:22Z), 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/GX3Q92528278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac0a83c1d8d93eec85739290b89e26e6d68256664657b43470deb6ae28bfcbf. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/GX3Q92528279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2e844c88f9e6ed2ca7de49a152e015be8116ebc2d5d9f41df75b87e5fdb865. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GX3Q92528280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919e1fb6650b65e0167385a27d740800b36d7e4c7b7de18fed56c2c8b89f319a. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/GX3Q92528281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9005dc1a22ea667c415eb23c1baeb9c7889ea485976da5b5ae3a2c838e784993. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GX3Q92528282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3dbbfd70db033eeeb1190fbde6bbaaff4dafbab1a0b1a323b431f3dcaead582. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GX3Q92528283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab46bbc3d337eb9e8c166c4d57aa1c59dd7a700253f812c4b438f7f389e4c36. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GX3Q92528284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7c74ee74e7c6ffa7115f31adf50e6a4c2e8e02dda33fff9c2f1b12b0f9bf9f. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GX3Q92528285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c882e9172f872832c3878784f3687a069e9ac764cff81555f1a476f38fac752. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GX3Q92528286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5831540e4e32df5fd4d72a67a6d648bc28a2162703ff27d7ae8bfc412ab28a. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GX3Q92528287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b503716da947e0fd13cd53789db167434cca03912c64a31828297fb8d5f181. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:08:02Z), 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/GX3Q92528288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0559ba3b3d87a3012df706df6b88c22afb63f0659d5d3a3277614a67517a342e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GX3Q92528289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c99845f0bd559c5ae64498748903646f2f4ecb0ced84532e7da09dadd74656. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:03:40Z), 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/GX3Q92528290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2cbd502beb8258ec6d43fb17b65da48e2cb94d3f6ad016a0f804dee66792ccb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:04:08Z), 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/GX3Q92528291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fd9638734988b1aab4b92f882ffaf10138cad8627ef89323a3f135ffc87719. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GX3Q92528292.