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 0x6821a8d35e7eb85aff5061fde390a76fa9f16ec5688283e78ba9591092220025. 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/5f7f6137-60fb-4fd2-b421-b7f0af9acd71.json and https://artists.proofprofile.net/proofs/artist/5f7f6137-60fb-4fd2-b421-b7f0af9acd71.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 0xec3dbee93f57256ddb54fa0425c22c0e2b7b271307f0b777638241d096183b46. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USCGJ1137928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6761504ae4be5abeb6c2e9c74e4ced164585d538bc8541b829a840c60642dff4. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USHM91485960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451beefd75690b40b3528976834f37ff91505b7a4c4cacf7013454a3b1c531d4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHM81776708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ecfa33c1e4ab64715bec523b4cb8a1c56b0019c428e711048e20eee80f8e11. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:54:19Z), 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/TCAFA2091598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26cff23de0fe921e1a44aab4ec2397f2eae3bc6423cdfec9c761c0616e433f2a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAFA2091618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeead92465ea4bdeb241d5d097439945300304e8f3c4023fcf4ae8d5817c56840. 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/TCAFK2163364.
It's the Most Wonderful Time of the Year
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5909d72ca9d2d37f69dabe1d04a219689299b5df65d2f5ce2ba09df9d142ba3a. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/TCAGM2206008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73e7c38ab4bbb93de95fbb36c4d815cb37f7bcb3032072b9ccb95ab7c9fd3e7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:50:19Z), 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/TCAGM2206293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e66ce4afa47171f2b6015a49f5b5ef3801c5dc9b8b8d7240488a0c7aa6951a. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCAHD2395490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73e7c38ab4bbb93de95fbb36c4d815cb37f7bcb3032072b9ccb95ab7c9fd3e7. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:47:23Z), 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/TCAGM2206293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7404fa3e946f290c56a56340bf7b96b33925575444e259f2fa3b5b80b53afc3e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAHD2395342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a59e451c3eeaad59db58da9feaf76af5ca2a40c1cf0c2e95cea38c0a02a1f0. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:21:53Z), 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/TCAHD2395377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e66ce4afa47171f2b6015a49f5b5ef3801c5dc9b8b8d7240488a0c7aa6951a. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCAHD2395490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20de122712f3302c78023e8c6f3cf267bbffb8494a4e342eda74d9219a697318. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAHD2395519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e53d26cb3f7308dc9e0d7584f8168f1d0609915511c00a12591359ce491418a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAIF2408899.
Settle Down! Live at the Hotel Cafe 12.11.24
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bd102a64d521a2356321e4d0bd8d02567da63e06dc99779038ba725c643796. 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/TCAFR2123709.