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 0x5f2083e6cbe75b2f9294629c155c0f28a8d2055e34223086480c7f8d4db914fc. 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/c388375c-399c-47b5-b284-f99fb8a4dbce.json and https://artists.proofprofile.net/proofs/artist/c388375c-399c-47b5-b284-f99fb8a4dbce.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 0xb7a1605e5d2e980e1ff614572fb57bed8406083b498184087633fcc655c9878a. 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/QM42K2433511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24308fd51cd14abd34009192eb192f0488f8546d17bcf12640ffbb2c4b0221f2. 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/GBKQU2488472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39af830e7c54a3777229f0ad40bc73e0cc1f32c08dcda286ee1d1c36385d395. 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/NLYK92400176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eedb690b78efb4e75b2e44fce6fca7b25167bdddea5910303e9ef59ce0bd545. 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/NLE712400445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5fda5e09559e4b69095f77dfddd6c44d9bd0f68f3877408c9acffd9bdccfb6. 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/NLT2H2400984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b9dafbed1da6274be3acf2132ea7dc7ea2653df6881c210a48bbd27ab866ad. 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/NLT2H2400985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c4dc83c61b6811d1f65ca82c58cc3e00e88437cdabad03611c7c7bd8f49c6c. 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/QZWDE2435127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa522a5878f6c58cab5a67ca35f5f354f37790b0790e21995952fb0dd87359a5c. 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/NLT2H2400843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22bad7691266ff42cda628c531c6395fcaad1414a27949689bb563f66e01eb6. 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/USANG2421752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50521afadbbac07baa233092dcb8f559af6c3b1620290a478871c8919fdf876. 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/GX8LD2493811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657e4c7c4b70a2bc722469afaef78fa6d3823cd3c2ac919be4660105377c0bc4. 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/GBKQU2408907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d23b84d14b6e491c58e1ca2a1bb643a0fbdd83435353ecc04b21c3bc506ddbf. 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/SE5BU2478106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebac97f859223ff097a117ca5de30cf2d4310fb1697ff4cea1875d8d13c374a3. 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/NLE712400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d730b5f9ac33f332d518e060a6b64ce533daa957b635bd03efa25c504650d6a. 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/GBLV62308319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2df09ef936fbd6734bf12ad14ad1cdb59d69cf051da7e2a633dd824bd5cafb9. 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/GX5MX2300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e28d26a87e5b5239a19dfae335fbdd7793f70c91b6e441834a980eff349cbe. 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/CH7812361667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406cbf97947fa16bcc425a7ca9d49fff7a53922315ea47e3b6f62b6eb57b468e. 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/QZWDD2300079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea29fd46ad90c91e74aaa7bd5064af4a0f519fafc97e269022049a8d7e559cff. 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/SE6TI2376081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783e75888df148449f47f2f2aa57e73bdd39778f39e867f7e17b7ec370a42b35. 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/ES98I2301483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d667536b8d29435ba6379eed0fde61b9fa708a4769b6568a622e747fa73661. 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/SE6I32353642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba622970dda7eb6be7cc781ff364bf03f8894921c172bc466aa4e854563a41b7. 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/NLYK92400270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc79eddae7651933aa1b7cb407997a71b066892ab23fd020836dac6197e2a07. 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/GBLV62406594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b8ad84ec8a7d2a3e8b133e8fc00ee5330476d729447c4defb5a7ec27fc8104. 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/UKR6V2520931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89df27d7fefe01f4f936cc301ed94157d3a27c3ee0e89d854ac707748daa99d6. 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/GBKQU2514080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a999d9ba7bebbae803affa0e093cdbb430cafbd8e83f4f4c74f4277df6a5e1a. 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/USLZJ2507528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c4dc83c61b6811d1f65ca82c58cc3e00e88437cdabad03611c7c7bd8f49c6c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWDE2435127.