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 0xd35fb629832591e140f62afdbbee37b10710c8c1a424b9187f0ad8681b6e1b06. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10bb7152-4011-4c64-a981-b80fec9f2630.json and https://artists.proofprofile.net/proofs/artist/10bb7152-4011-4c64-a981-b80fec9f2630.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 0xcdbfe0d41d0b1e5caa769b499db867cbed90dca0f1d234469b1bc747fc146bad. 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/SEPQA1400578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ac716c96a0d07314cb6c80a8933040a9faaa159bd452bc1eb13deef26082b7. 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/SEPQA1400582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7634f8e9ca1c7e19d297184d91cac118ceffaeedf1f77caa29c02463afa6c59d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SEPQA1500436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f690342efbaf472bd4774eaad4b8dea8f704e3d4c4458aa68c268ea1579664. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEPQA1400158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663f6954fa1b19571b2ae129da62b2098ab154249988d4e651beb55f5a708785. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEPQA1300290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839d08ad69b21ddf713d194459e6c17bfade3a4948988db010a34929f9fee26d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEPQA1300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5c32a2001369bb93ff534b79a0a85211b613d3151a73459ae53517913714a5. 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/USMV20500242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4b5b9118c89a9665bd768c4acc77c199b6923453008a73ffd762ce9a5ab812. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USAT21401071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bf9fe474cbc6272a348cd12577168d515245256a42bf6d67b927982ccfe21e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEPQA1500665.
Please Don't Say You Love Me - Cyril Hahn Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f354a57eb02d9ae83af990697aad19ec9e45738e0dedbf4fb55ee00a607d2d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBAYE1300363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388839b0eafa62965c72d823603caaffcb0364cff38531bc2c015949fc564887. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBAYE0302353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf612d3a3f9cc7e434d97a531edd2f227fb0c5f2cf2b033041febab1569effd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBAHS1800264.
Why Can't We Live Together - Lasting Peace Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe927ecfc4eef09ffe0beaa94649b3976fb8ab18d6f0db6b2ad2203de5ce8587e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBAYE9000573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f2dda315a13ee7c8a0e8e81df4a0f31879957ec11d089adcf7da96af7d9ac6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USAT21500547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21309c0cc4affcd92c638bfc2b678cb8bc3d4bdda0fca6d38c6571e55646aba. 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/USAT21304510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3cbf627074f8ec40ac45120b2e338bf869fa0614d9564b9a17aaf7433f2215. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEPQA1300762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a6aefd1586b038cd6cb3e3b148f13001f42c0cbeb8b250990507c491c40afe. 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/USWB10902583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54893430cfaf42a8be3b4f0ee8cbe2c895b5029c9eaf2d5a74ce4944de250d0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEYQH1400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f4a91658ede32e0a66c50c12dcf2da7269a649a743de8bda04db899777e5fb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEVMM0904004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8190f75a35fd9bc48d572ecd4e213fbf39616da127f02b3a680d9be0589096. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DKABA0310107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c6dcc940b2cfb4c544bb9c9324a30b263099328084f7643875a30cbabbebca. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USMV20000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5c32a2001369bb93ff534b79a0a85211b613d3151a73459ae53517913714a5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USMV20500242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e5d41235391160f5e1993c6efc06d4dfe26cb5d51c3855b97daafc787a24ae. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBAAP1500066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21309c0cc4affcd92c638bfc2b678cb8bc3d4bdda0fca6d38c6571e55646aba. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USAT21304510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33638a994c0e809d7c46044af26f069a0fdf725b0784c4889fa7004ddd5aaf0c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USWB11001356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5e6440257d3c65fd092934c51444542b21ffc7d1b86c779bdbb7b09fba6ac7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USAT22001339.