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 0xe372efa68d60c53ed09a5a853e353757173668052b98c4f2efcc76e5b1f3c6a7. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e5742dc9-13df-4bca-890e-fcd16c8de94a.json and https://artists.proofprofile.net/proofs/artist/e5742dc9-13df-4bca-890e-fcd16c8de94a.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 0x45442e9b1e441285c206f8d624ffe341fdf8d174cbc5790b7c58d25463de7872. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZPJ32349182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657f2d27f272b870d8adcec32a9bdd76bb354f97d34ad34e88fcf15f0d6fefbb. 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/QZPJ32355332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585a4b2d7c8167099580030ec2d4db57c03e96aef1b41418eb40a29c6644e71f. 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/QZPJ32355335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac134817200011b93db844d289f86051cdf396771000e30a40990f019798b72. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:42:42Z), 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/QZPJ32323769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d03248a8cc6ef2111f07cfdc0ce9026d7c7c54b8abd9dd8a2fdff3ba96b0c9f. 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/QZPJ32323772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dff204bb0d9b7bb5186bc633d2565b95fbed9d667e30b70b82e5f886bf9aa25. 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/QZPJ32317714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873c4d18aba1359dc96b7a97530a9124b06c27e2303fb3e68db21cd8d52ac62c. 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/QZPJ32319612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f417b5d53fc2bcb1e8289f83b496b9b9b2a62800ce98381366e7a9f17f4099f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZPJ32230063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6860e5c3f20d2c5cdfc71e172380ce7b9c470c1627968cd472e46959e908693d. 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/QZPJ32230254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c9e9fde1214789847b10c8c8ece5c17f0aa1a6cf2e88fe5f375d84644d7557. Chain 2 (Bitcoin): anchored in block 956970 (2026-07-21T23:33:54Z), 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/QZPJ32230210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945142054a7e48cbbedfc96dcaf875092e74ecc6f719a02c7ab8636b8cc87982. Chain 2 (Bitcoin): anchored in block 957013 (2026-07-07T08:31:11Z), 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/QZPJ32311854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e5af5288537db209b06971b8b0fca9832409d1c0cbe0b2e876a57fbdea7c0a. 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/QZPJ32213459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12abd718923b37bc67fc574332dabc80256b41f24df0647d66bc525968195e0. 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/QZPJ32201442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d61fb11107d9108599848a73b61e2314d0fa8fbfd9cc23e7a9f138796b29d9. 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/QZPJ32233250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a936af83368124b718945977ac0679f2ec8cdb76e17be85bb18c5163544994. 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/AUGBT2418086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945142054a7e48cbbedfc96dcaf875092e74ecc6f719a02c7ab8636b8cc87982. 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/QZPJ32311854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d61fb11107d9108599848a73b61e2314d0fa8fbfd9cc23e7a9f138796b29d9. 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/QZPJ32233250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f241646a0c848514103f24cae600cb33a746de81ac304a2cb66a8dc258aff8a. 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/QZPJ32226466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b3d17907d84b4a719fd4613814fa48c6c88769f197c9731e3ddf7edbb12b51. 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/QZPJ32227115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e5af5288537db209b06971b8b0fca9832409d1c0cbe0b2e876a57fbdea7c0a. 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/QZPJ32213459.