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 0xa22766a0d876a4bd91f3b341c8ddd9a43e7df557e49254b99a93bd9c795eee29. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9bc888f5-085e-4670-a72e-1d27fd4de97b.json and https://artists.proofprofile.net/proofs/artist/9bc888f5-085e-4670-a72e-1d27fd4de97b.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 0x7447f3aec472c4e1264cca83e87f37957538a7d6e5980c26368344994c8aa524. 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/FRX762044875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069c29fe8da541d16d406adc1e7c4c6331ce762cbc8a1456a9910a84d7458b57. 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/FRX762044876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb57f0a17b2d364a0d821a160f33c4a3653571aa4dfcfd43c77b7b080295783. 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/FRX762044877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcba413ce04ece0001f7e91848bc2711c6017bfae581a2e746157d7527d39993. 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/FRX282056214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd25ba3db260c0e14893e2811a8d9e812f7004543a5ce8572f241fc9a9497db. 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/FRX762044878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c35cda8f93b602edea3a3d97e10b288da9e2bdebaaf9c1357b7cd4c5a378629. 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/FRX762044879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535c7622ebd42ee5f5231c0d36be79a587a7acff77c28f3cc58d0f14330bb0aa. 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/FRX762044880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d16a2118b861d47f804bdf87d47453089492319dfcacb0720cb2dfeb4c607d3. 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/FRX762044881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a93db65aeabd075bbf1a2b7216395548176d3e3c3cc351cc82cff9d16faecf8. 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/FRX762044882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffa74183f867f1e44543000b5aa74ec96b8b816457e9484b90712d3a5d1bba3. 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/QZ8LD1926644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09df8ad767655e2f7cf574756d30c881e38963062fb189c9a8b3a78e52044c7d. 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/QZ8LD1926645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3b0ef25f0a5d6303a802ae91b5199874bab388bd0cda67ea69ac9fbf5ec7c4. 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/QZ8LD1926646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52053f85e1e31c5d369e583d620de905e00d0d1bbf59ef689c6a1c5d5e188382. 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/QZ8LD1926647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278aaeec8b0328fe4a3cc7b2514faab98184dc29263003a33ca53e4e8ae2db8d. 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/QZ8LD1926648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e455842f19d26647b1118d8ad1e243908f1c78396355e7cf3f976067a78efae. 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/QZ8LD1926649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833185fc79ef8ad06ae300e71d978afd821574336e45175d9e434d6dd9c8982b. 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/QZ8LD1926650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb78f93af55b67afa57476d97fd501d875bcd47fd411aecf81df9b5399c90ff2. 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/QZ8LD1926651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3e09edc7c195ec40b38147b433c2e0fbf7e5646c5bf1aa7cbf8c6b14243cf2. 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/QZCE61819273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6163430ba31a960361fae68a76f61ba03705dd3d7c3dc518c50af9eae48f99b. 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/QZCE61819274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd947638829741ef6d877bc1f5b629405541c3bb2898c61ad0de31dd933ab302. 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/QZCE61819275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf59e6f2221cd946005017bf70a423752946ce73639aa8cadc83ca91a92f9a6. 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/QZCE61819276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdf12e0681107523492b2186cf8400c43a5f77690c6ffab01018a8b9898cafd. 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/QZCE61819277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f85c9bbda7b5d794e3d10792a73af2bc04e5a539e14ad9b1b93679d857abcc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZCE61819278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e957d9781ce9e01fc895abe14a030ac6851490d1c59252d73b153f3b75ae4cd. 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/QZCE61819279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac17b1cc46859c03a0bd45bd4a63d5e57a0ea96afa661fbe7b21f740ca88fcbb. 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/QZCE61819280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6883a9e7c57bdf2125b9e0049c0d57bcd1ab4a99c924f07483c26756bb419425. 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/QZCE61819281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcead24ce04dfe5a3d62c5bd62dda6ecc76f72b93634e0bf72e00ef6e94ba619. 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/QZCE61819282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bf4be1530a034c58d54be4b8a263d21c23fc598e9c0daea9005f0e299f8f57. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZCE61819283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d49ca3690578075be0339dc96e789c56cf8dc2abb22941b6d1841c76323ae72. 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/QZCE61819284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c839930f8511dfe2503a2a0fbd0a3c19a6cbe8dd8f1838c403f4a1039b87e3. 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/DGA092421432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bbc97d912c0a1e50173a5c9355efe7dc69ba39922687d7e5baf0b484cb9689. 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/DGA092421433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c839930f8511dfe2503a2a0fbd0a3c19a6cbe8dd8f1838c403f4a1039b87e3. 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/DGA092421432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c35cda8f93b602edea3a3d97e10b288da9e2bdebaaf9c1357b7cd4c5a378629. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/FRX762044879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcba413ce04ece0001f7e91848bc2711c6017bfae581a2e746157d7527d39993. 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/FRX282056214.