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 0xad90a3ba10c0c7bb53056c23fb4da5c637f06691f112fda4c0df12c45adf077b. 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/e5e88b9a-05ec-46ae-bfca-d228cc205e44.json and https://artists.proofprofile.net/proofs/artist/e5e88b9a-05ec-46ae-bfca-d228cc205e44.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 0x3cfd579116c46d76d12be02bee2a9516190492ea3388b71be5ec44b53f3c856c. 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/QM7282375384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209091782fdf0e57a5e5dc24b38576d735ef4fb880a0b635f0fd0d6b8cb86fb7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEE199700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb605cf29afddc5091c3f0864c1402e32b9e170612854abb6200520616c3dccaf. 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/FR4LO9500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763db0726995248b97b113dbf16391e70226c23ededf3716c8350cf82f4eb700. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEGE91500078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe315b15fdbd5f1b8cd9f3e80b39510b9f4ceae2a6c0b1ce10deb5ba980f93771. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEAF71108117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8c15ece358642d50773012ac7b2039f3d019ac1898ba61781428b705dc0fcf. 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/DEE199800213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d93e570d66d3f6d8a3d039dddea699dfb67326fbf43ac516550914846836fc. 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/NLEW20900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda42b998e5730d3d17b93d6041e7cb40e9c8c03f2c8ebc4c45b96e351dccd8a2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEDH71800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ef35bf045743b9a884c99b0cf5de8da6ee7a577f7d0dc70908f84eb4d8adce. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBCEN1500882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6676745aca34fe64190cff4844cb760b9fd025eb25396ea5353dafbabe4585. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEL020620082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2036d006e3fbacb421132c6e21dcf5f4fd218e3a16158bcb4e8109055e354f. 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/BEP010400181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5c26c42a7c5e3c2905aa841b8bc984f802506f7b142e5edc6df0566b05a2ee. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEC649400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475d447f5ad172a6089b62d497e49c68e1e2b69ef2ace098ea0fe59a56414628. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEL029410002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf36cb5c4e3329aa862b9b6cf7640800970dcebcd3bcecd6dd8068a77674969. 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/BEZ451200641.
You Gotta Say Yes to Another Excess (Great Mission)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34342783188b3512994c4520c9ace157ade9e91347f58f311c534d6838d28cd. 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/DED579404820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433f4c511f8c317a0c4fe56772235810f05f5cf6022d3d2b1de0c48db6806a62. 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/DEZ650512353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbdddb74ebea12304b4f368c1dd27837e14f7ec3d6b357aa284a03b45f9a65b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEZ650512354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f49b64ec35efc7e64a24431e0d21b696935aeedce53127ef9f23d745b1c834. 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/DEZ650512356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be1ddb87aefca3a500433740db4689aadc468268ba3899b678392aa4814788d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEZ650512357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573de196816bd8050559f2049762d03a4d8e440989fd48518fc176f6f4ebda51. 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/DEZ650512358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f59fceb7bd84ae982328465cbd0eb5ed49c4ff980629d3418c82e8a6ba0b1dc. 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/DEZ650512359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18e314109bd7d0523aa8ee1467d9609b76144ac1ee99efe630b3318e87b9b82. 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/DEZ650512361.
Deep Down Below Remix Contest (Bonus Edition)
Spring - Original Vocal Mix 1996 [Remastered]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bc7d2a0791906d2fe65b9ac7ea533291abc3e384697e06cc33a3d27908f8e2. 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/DEPI82221029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc223b4aee857a2440bbb23a4d4b2e1add9072dd2d0526b64fd0bfad21cca430. 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/DEZ650510720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57262394d8694be21b455b07b09ecde8342e385efd3fd167779ce243ea57967. 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/DEZ650510969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce2ffe733b430106ef4ca364674aa8433561aefcce02074f3b6c7e3982c4cab. 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/DEZ650510889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd938827dc72a884645a43e6fb32e6da2c42bc3c7aaddcf7970a790d1dfba2965. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEZ650510694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89242d676a86135b06c530d7abc32b0ecd1ed7d525b1c9216083203bd9842725. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEZ650510728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9322b566f18c556f0ddfa166ec1f7a66737e7215ac3c755dbbc94521cc8051. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEAF71108101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934feb5c1995e44f39862a12779d0ac2fdd11b68c08d2ebdc484a14c885b21ed. 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/DEAF71108103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63910f9063e1ae67718dfd0a59e00fb6751b652a83637d216c1ee280ffb220c. 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/DEN062003345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ca49f4b94a05a8cd1a56df9145629ab26c1e0616cbe29faa86469150f772db. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLF712001727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa6fffd34519d4937dde3943ab0400cb015ec904919a2487d960f9cdb80cbc4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUS11900502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516c510469974c30d038b0ff04707eea8ce0b0447993c6eae5510ddba5ba2829. 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/GBARL1901205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecd230d54bf24525521ce660f1d313d96fa7eca9a87df0eff7faeab457b307d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USQX91903738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75cc45959dc31231a32ef4b2573c6cb4ea6c603bd06876e86be944e981f5ec1. 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/GBENL1802408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6d77c9f4d91fbda2c1809300d53b6cfc32ea135dbefadeae9b3b5334a11f0b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GB5KW2000175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fafb2255fd71930c83784db8d45cf4452dec793f549b12d25fd3595476e2308. 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/GBUM71906147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4303fe49186078c4de978bb441d102d497c00e70057b5095ddebaaca1b8403be. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AUDCB1701462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbcb927a6cf0790aff030dd75b791448d69e048e51590e8f8289a166f4c6245. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GB5KW1902334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9521eac13ddab83dcb9bb5d6a709518700b9225aff80324d3f8dffb41fe441db. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLCK41042015.