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 0x16d0fe0cdd120399faa60d844bd46c09bd152d37163c070843fbbaf2388a2360. 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/5a577984-f729-41b7-817e-df4c46976ac3.json and https://artists.proofprofile.net/proofs/artist/5a577984-f729-41b7-817e-df4c46976ac3.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 0x9b33e39e6c3deb6b10fb1f7d4b190195e03c08bf28e4a4e5cf80834191c68399. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NOWGQ1706010.
God Natt! Rolige Barnesanger Og Nattasanger
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0773e836b34b3ade259fbdd14d091155da65252a78081d1f171b77123d79d5a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/NOWGQ1801180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25a899dd260f39f6a80ee64b1baf6671476bf25bda3c8a69057a448414819b7. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:39:13Z), 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/NOWGQ1801190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f28fd97dd4b9e03082543eb34b1fe1bf804d2e4b291650b5ef1aa5b957189a8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NOWGQ1801200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90aafe9f9d42ffa30a9176fa4782417159b897018e0acb11f87e06333cb5d0d. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:37:29Z), 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/NOWGQ1801210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279a048967122923dee29c7bca6eb5093460ea2c92b0837d7335a554fbcc7720. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/NOWGQ1801230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a567e6a868573474913819d1ccf559e3edd402a775d971ee2fe2957cec3de35. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:16Z), 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/NOWGQ1801240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb680ea60910b0299be064376ad62b16f100091433f2d285b73b7b8d383e321a8. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/NOWGQ1801250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d6013d9b272d417eaa65c42939dce7462f01e66359534030756d907c23a5f4. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:16:15Z), 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/NOWGQ1801270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfcbfde5bfafd39c11001e43d5c29828ce44436c9166330359ef8a6fed67972. 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/NOWGQ1801280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f04b9c4e3f138bda340877f99e4ef9aa7b5b7f8600d28897c99bb867c390893. 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/NOWGQ1801290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c60a3bd30d1f12d615d5cab1d363246c53d26c77445a2abe73a6b9a310cced0. 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/NOWGQ1801300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bef7f72ecc293dd07da66dd4683df1799fb160c8107a667e0def8bdd70527a. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/NOWGQ1801310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848ec5ad0b4e5bfa28af67eb947a0e6e3dde472d6290571ca073465f6e1af6fb. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/NOWGQ1801320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cdecddb429806ce32b3117e432608cb32e677c89577c987ce2c07b9fbbf583. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/NOWGQ1801330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72941f0487408072062f9c5b58fc1d3d894d84701cc8039a68c3333b3de8d69. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:04:43Z), 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/NOWGQ1801340.