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 0xb370bb2f330a4fe3c2d754d162c52d3c58f3f1d8ab8919856f6b5f8a25a4453b. 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/829a3f3e-f978-4061-a534-ec05ada23538.json and https://artists.proofprofile.net/proofs/artist/829a3f3e-f978-4061-a534-ec05ada23538.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 0xa44a0b46226c562e868df6222e9a3dfecb8654acb887e1a51797dd170ddae7cb. 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/IL6191300367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc794e4e1e2e20eed950e614bfc6c92607ac288c8e94deb0518e67edbdea0b2cd. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:20:44Z), 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/IL6191300369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc872143655dd07c8f96ecdc223707dbf7aa6c273d415d0e7d6fed311d3636a. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/IL6191300372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7186595e0a52851c5e6a3a14d9ff38bb9f2b55c7a2be5ebd4739d78a0db78ea2. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/IL6191300373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e0046d26c99305d7bb06d8b4b4e8505237962a4d0b01e6283bfb26cadf84d0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/IL6191300374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6b08b273b17f7a623dc4dca10ef071eb17ad8e2d29b6a5160c055cbcb60f72. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IL6191300375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2595f9ee538851cb8fb85efe2c15b3e6d169fc0f7be112185171911ed0eb1a0b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/IL6191300376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4763323d604de620ae76138b8a79cae30ca7542df8786ccf1c1be96cb6e35c80. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/IL6191300377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78da22f407030cf5cec64066b0f1f7d5f13ef79b76068e796e124ed7c7873c7f. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/IL6191300378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24719bf7310726139e49da9dc74136bb9a7cea3b7e164127b90502579dfde32. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/IL6191300379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa9fe37580af90ab95529574e01bd28ab03e26bfe9ebecefb6f81ee062f8946. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/IL6191300381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9a9057c6e83de1d503db1720bdafe2e3e0b8a10ab8faf96bd250bd622b4ea4. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/IL6191300382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe61fc2b794b96acee65f1a7566eca143afc4aabf00b8a02398ecb1bc2eeb3bb. 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/IL6191300383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf819b2a8ba5b5421e9c5abf82d7d2aaa74356cdf98fbc1f872700f8bbbb5d3c. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/IL6191400352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430241535352ab11d5d46d6fc90d37ac51005c23fdbee597135078e2d39ab24e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/IL6191400353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531eb5328d50b2ac99d47a02acbc9f8b0e9ef78ef7862b0a68238f96111d3a42. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/IL6191400354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62103627a38cab8b58861bfc0b00f42caf22fd0ee1f882af170441d4e3da2508. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/IL6191400355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f75a10e6cd87f4f461f5d8a756bd823e933b9ed6d465a43582d6700a81fe38. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:29:33Z), 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/IL6191400358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6ed28d16bd8be6ec517fc308deeff363c65a56aa0655f63451d9112afff2c9. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/IL6191400362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7272702da9be2450fa7f7ae4b45bc351ef59738f15e63b2fb76c2d0443dffc69. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/IL6191400363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70fd218bb77732225382a7c7aa5b63b84a28e03fc73110ca692a81fa07e2bdb. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/IL6191400365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80ee69c7da0f3d92899749179a86550155898cd1902567e61497a61fb168a78. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T03:20:35Z), 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/IL6191400366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadce3f69c4f8a464e63838c7cc8cd9a6f76533523132ef14a79a3163a25ae9d8. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:49:08Z), 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/IL6191400367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a283456f676a83635a20a62bd1cea390a7f61fbbb2e39994d53e32a3123f198. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/IL6191801483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb639e602f61ee0078ef37382c53fc8d3ada15eb803923bd5b9bd96d05d2b96. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/IL6191801485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0271603062468a61cb81af36d7dfd7aeacacfa62609060ef258b28f1c1179111. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:54:06Z), 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/IL6191801486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bcc065828e59ff95aec04752d207fcee3f61ec0f0c9fa1053c64a8b73f6a62. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/IL6191801489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60131e38a373e91f4fe355aba8bf5bde703152fe4cd7f88c4ec4c703125ae3e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/IL6191801490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd151a918852282a97bf6aa8970e49772cfd497ee736753ae61a01ce1d85f494f. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:06:20Z), 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/IL6191801491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a17768df9e749a1f38d779a8d98dac166d89ea42ea37b0bc190d374e24646a. 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/IL6191801492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a788f45b5cfe3a5c81b93a703f3baab1d06d455430f43e6d2d63526bc3d2b78. 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/IL6191801493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754496a6196ea3150358991698deb6969b3fe888f7470782803042f8f4c3e8f0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/IL6191801494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f4cad0153e9f47cf4a86d4f093a9f46e16efb862e1dddb4b7d6d2ede8b6db5. 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/SE6XY2583057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec68e58703e833032cabbfe5ab2e4b1c0680f98a6ddcb6d062a3792b2e5bc65a. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/SE6XY2583059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250e93b2d698d35dc5be2eaad8ca2d65e9285fa891f1a583e6857010bf897f0b. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/SE6XY2583060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203c9bc714650afe1b6ed3494dcc4411a9526d67048868ae29481a61a47f1064. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/SE6XY2583062.