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 0x7611783bab40fa5e7954d084f6043c38d36505239a5297c4690716ec253bb8ff. 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/21cb0115-56d7-4c9a-b62f-b566f550520b.json and https://artists.proofprofile.net/proofs/artist/21cb0115-56d7-4c9a-b62f-b566f550520b.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 0x9ce3d9f8d2973adcd168c0b5a74c56475e4d98bde6a18fd5f2dcb1022f30b068. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:27:26Z), 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/QZHNA2389545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7109758ac96f8eb18a6526de1a0b2aedeea521b62f3d2db587f9b1621d4ee5. 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/QZHNA2389546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4163760cb220422f1ddfe03e6507ae1c273bee75b4ccab9f595f72f7709bb16e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHNA2389547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ca62e9a64d26e3791094c10ccf0460bb4059e7140108a1c208acf8e8fa0e89. 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/QZHNA2389548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a47d0d55722d7b72137f8ebcec69ca3822a38e55f02f2153529c37a36b4009. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZHNA2389549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4938aa1ad077d15ad34b0f77832b3e57ca8799df5c0541def0b4d33ba839ffb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHNA2389550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f306474b077a2f345cff7a708b888898f9459872465beb87aac807a1ac1383. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZHNA2389551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2186dadd1599b24eb682167b485cd1682926b77c1ee07af42c3b6bc246d47042. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZHNA2389552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1365cb10667044de7b607b85eeefc8111aae7dd94a8baedf47568dd02616418. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZHNA2389553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ed42f0e74841d0a73edd8e61b17462dd443d5d4ed055d057bb5560b49df327. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZHNA2389554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4c28d000c2c2d1fa303f5eecbb21ae9e208fc6f4b1a749266c7eb71c15a277. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHNA2389555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae65858e0fa6303f4211c1e28885f8bfce6cd5a65394fc7744edadb5623fe38. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:47:09Z), 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/QZHNA2389556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90af5d105b2c972f599eb4023a052bb865941bf07c82d821b55a39cbe1118f13. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:38:44Z), 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/QZHNA2389557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628542d7a5b786447964f60b1e4f42348ebc757d2a462dfba3dce70cfb9fdcbb. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZHNA2389558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a2077ad693dfafe3d236614563f52f5ef794c326670b9d5ce58ac726142628. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHNA2389559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7cd315994e98e923d20ef8f3b81f053ab75c8db2c06e12d8b8805544041fcf1. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZHNA2389560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9c1f78a5c86cdcc8c2a07e17600dff0615e3758719e50ac5dadef6067c8039. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZHNA2389561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0da3c98505cc960c92a137a79c01a1e58698efa0fb8ee5ef4c0a0e7875d560. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZHNA2389562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b2a54594beb4a46afb8530a487231ed832354ea2e21534ee1d8b3666fc6e4a. 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/QZHNA2389563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e81dadc7838abc417d8ae9c4a96eb2e5beeb66d8de50fedb43cd04efe385a9. 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/QZHNA2389564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbced16665f1d081fd5cacbfbd92fa50a8485de0c3a21ae1602faf7429b3716. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHNA2389565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e8650c259daeff6a7d7e5cbdf6e00de66d57dd4cd6beb232650539458f0c92. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZHNA2389566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa510c263d5054d541dc5727efedc78dd5f29e13dc304a3c9a3ae3fc1a7abbd35. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHNA2389567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c4edb2cfa44072ea8fa8fb995c9dfada65879b5a1c603e1180c207e3ab2d70. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHNA2389568.