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 0x8a12e49b77c78a37729fa4a69888103e7414a5d7c57470311081df05520d0a61. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1423b5da-a9c6-4a0d-97f6-17864c6fcd91.json and https://artists.proofprofile.net/proofs/artist/1423b5da-a9c6-4a0d-97f6-17864c6fcd91.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 0x1cd1517afcfc1012a95f19ec00f94ca79562a757dbc5c0730779527c09000ed5. 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/ES71G1704892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a38c5f814618c88e9f0372272b457008be53866a83322edb828cae8613b746. 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/ES71G1704894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53575e37279e525aca7a7e03cc9446547bbe6532fa38bd2380777acbb89ce604. 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/ES71G1704896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c590abfd8bd1a839666f2cbcfb9f168f6a3def385d220683a99e69f33ee36ce. 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/ES71G1704897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a4efc921017f5a55f7a9f2e08395a011bf75dfad3d4729ea7941145032fd12. 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/ES71G1704902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b082f52f3b9d3644ddc496908f870c8b4a97151cd99691a4109ec1bf7904d2. 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/ES71G1704903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac4d5eaa7a810a17e09f7191d333da70e4f789199b2d3f27894d49fd5266aa6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ES71G1704891.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60a27be7e0fc33db60205e0e7f69bb0e3d4dc1d5e0b80999447bc459c790ca8. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/ES71G1704893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b6b28af4cfe1caecd5c1d86b5685bf9b5c5072211dd5929096336bc027a783. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/ES71G1704895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3cdf71c3e46106b864588b14fdcded9e2c064dc55a01f56e8eba993dc80484c. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/ES71G1704898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0818c1d8181180cd1e7398d3dd69cd21fb44c5f5c7c612207d4cd8af0c4078. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/ES71G1704899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe027ac2727bc99ea0926e76e59be17e1ffa4d1dc1692d5857a4161f38754a654. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/ES71G1704901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceea985af47b6a53555b4d50e3692308b6ea2267a8593982d26d5175537db06a. 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/ES71G1825308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8f40298957644bcb5d9124636fa09803209cb3aabd61c01a4979b6087ea8f3. 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/ES71G1825309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb194bf9359d2ff7e79964387dc819ba70fd4132bb42dbc461497a3c1159ed501. 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/ES71G1825311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06d79d095c30be838d2b47667c321480236bc602d22d81f174db5e9b3581e7d. 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/ES71G1825312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc867565e8c047965235b9189603f6ed6d7c98eff8c84104ee49c4e918d53275e. 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/ES71G1825315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340a316cab800048c2cb094f8d71492cecde94e563592308d5f9f082a327e78c. 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/ES71G1825318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3db22719a445a5166ad66bcea6dd50e3cee754748fee486b0ad4ff601774e74. 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/ES71G1825324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa004309515fa2790e0b37cf86d3ebdd7fbef5c995d76b5c6a464bbccd5159429. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ES71G1825314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa285124b62d5a58594b2f34d65c0f2f6accc8c1f89b8ea49285ff6770ac6e8cb. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ES71G1825316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9446e8393667eace121cc1e9bb69e5748c26634a1c64ca3dafb4389d44186e25. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ES71G1825320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4303816d385fcb76e904d32d5b5cabbcd6b924b46dcc127bfa96497fd9fd00. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ES71G1825322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a318123822579c2fd2220292265ec3c2492c221790e61f61d64c226cd9a9f46. 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/USUYG1303417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f316556121819e5f14212f689eb26f19b0dc93ac0cf8ccc7e31365791e65064. 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/USUYG1122929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28debcc99b32888f807fa54082820c204133e7498d8cab716f15979bf7b9a8e3. 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/ES71G1637219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d40b9c21380cc6e9db1f53868ecf16bb08ab9840f9455af2a844a1a33f29ff. 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/QZNJZ2157753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7787681f5616ba2479c4474ea8d70b8ca2066c337f2c51a572c78d40c356fec2. 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/QZNJZ2157759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25129661c889c09684124168830ba5e07e0faa6c6fb82c4083fb2f35563719c5. 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/DELJ81516334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3eaf5cc9fc4a02cc30cf72348f1f584f4e4b99f2e08a8f196990ee8e686a01. 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/USCGH1911216.
Bigbang (feat. Juanvisoul & Franz Mesko)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601e993e6e50fdd798f14906ba8eb3139bd6b2e21a8754d7c6454231ef851159. 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/QM4TW1899349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e9631244acfc621198467be44a8c63233d9ae96fd044e6d3da7f6e84983d28. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCADO1839436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3f59d54d3631e555f8688c8aa2a35b2cee25e6d54992c5345675ca89d11153. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/TCAFG2023985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e109f8f03646666eacccd84e5c4efa2c393c28263b7a366c0606ecc891e67c. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZNJZ2157755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ff30d11a885c72370ddb775f2a5c8c5f793c05b745dbf539a2993cfce799b8. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/FR59R1621000.