1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x54ada1454a495ff4053c459e47f21a864949404d42dd1659cc2c4ab581fbe588. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd1f8733-3d46-478e-9cb1-f84b3e5e1877.json and https://artists.proofprofile.net/proofs/artist/fd1f8733-3d46-478e-9cb1-f84b3e5e1877.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 → block OTSBitcoinBlock must exist at that height 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 0x7d11229af647cc237e5446a7974fd7317d61de50f1b8c7b30b83c5a7d73d42c9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZFYY1966143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2ef3cd315d94bcd1615207b5d36e682c6409901c232fc14b80c12127225207. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZFYY1966146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1a79a1b2c65a08301830af6644764caaa94d6af36dcfea5b52ebbfe7a11502. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZFYY1966151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f8410cd40b5a716d9e1edc4862d084802c188c6153ee2610dfb8128f283440. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZFYZ1992203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecd34410e17c02b7402bbffd7d4fa6b02d518206c03d57b5b864e409355e16a. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZFYY1966843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0123edc7c58156eda9c1ee78c5d31a4524370de77dd290c15de1bdaa8f1ec6f9. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZFYY1966550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28880e7f807a324e666349ce466f12ed839a6e6948a187d8d38689b0bdf782de. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZFYY1966552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0edbd81b92103fb76bc2ad8591c65ffaeb8979ae834bc2b98b77c211b6d07b0f. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZFYY1959742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83ce1f3233431f52ba0f9a83084c73ed90ad1391196a7b2cc875349c08d5123. 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/QZFYY1959743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5668fe15746bd2fa1b2b3c10fa32679ce4eac604124fc7c1ce2432830fbc72a1. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZFYY1959744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf320670dc659efa29dae20c463b898804dd18411fc8da2f359570d4a85291db. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZFYY1959746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab974952d860788be563ffb0346a085fae58de05edc98cb1996f9a3250872713. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZRP42359283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9366c8369a17eba56069ed3419b00c9a1f22b3b29ff880aef14f9703062fd64. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTB62207387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66caf06409ff3ee7aedb9303b0a7272b5d78b06955103ca636874c0cd00b26f4. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZTB62207389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2db54d0bf54672b091c1a64327e939e335dc20380ca66736f3adb9cf0f03717. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:49:58Z), 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/QZTB62207390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fdd02b3e1af661eef647624e0447b8ab8a8a9dbfe51179a5168305e334d54b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTB62207392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443dd2d2d04d477bfd6d1d79b8ab1268ba6bcee7fc88437d0985d427b8c2ce19. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTB62207393.