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 0x362340651736108c03c03a2229fd10e214e70fc5b157567f0fc403ee0faf9f4c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/08198360-8009-46fb-90cd-c796620c8ce0.json and https://artists.proofprofile.net/proofs/artist/08198360-8009-46fb-90cd-c796620c8ce0.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 0xb523c9eda242ed7577a1d4627fe1e3d516314655b8e8dc37526b8bee4ae3b892. 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/QZK6P2212032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858f29b037dfa21f12004f0ebaf4413a24b3a9fb209ea3eb1739c0b9d8b0d93c. 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/QZK6P2212033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc310c8035b5a7fc4160f3ef7271c730cdb4aa071cf3cf9eb504ce9599bcdeff2. 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/QZK6P2212034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb523c9eda242ed7577a1d4627fe1e3d516314655b8e8dc37526b8bee4ae3b892. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZK6P2212032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc310c8035b5a7fc4160f3ef7271c730cdb4aa071cf3cf9eb504ce9599bcdeff2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZK6P2212034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33944cf047d2158455a41cf1f8f5033c40877f790c591613ec3a3de6579c071e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZNWR2209057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cbf526c143b8dced6b51033cfdd4153ea1a2ee6269095ac6546ea9af6c3c64. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:42:58Z), 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/QZNWR2209058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb26beac01bac57f0e3140ded9379c35296e5759282a5e3c415fd193ea4787b7. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:26:50Z), 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/QZNWR2209056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33944cf047d2158455a41cf1f8f5033c40877f790c591613ec3a3de6579c071e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZNWR2209057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cbf526c143b8dced6b51033cfdd4153ea1a2ee6269095ac6546ea9af6c3c64. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:54:44Z), 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/QZNWR2209058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405f7afc46f2f7f7bb7e6c84ad6d2f86c13d5a3a9a732bcd12bdccafd5985bc0. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FRR642201848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1180943c44e92451e323936ee3cad63d7a89fa45f8fc66302bb5d19f6029ea. 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/FRR642201859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2ab65d9ce576452feabee260fbd410c2a2aaa23cac08f36dd4417d55892c04. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/FRR642201851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4857e6e13b2b76635cbb5e4c4de610a9046303a8ac2753722da43f83b0fd36fd. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FRR642201852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a731fce1609955d78cc09de3d19b3d1552588bc820818df55b0e935af57628. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/FRR642201857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1180943c44e92451e323936ee3cad63d7a89fa45f8fc66302bb5d19f6029ea. 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/FRR642201859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420272ac7542e83c5fa21912ef0a3f5e8d194d3c0e792b1fb04507155ae6c04d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRR642301373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a335f38196ec5f48a7bdcedb5dbafc90eacadf1ad452ee28e47e0cd5a10e61. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FRR642301374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffd4117e3a7572bae65788e389a5f2e63ea358146a2fb9ff1de64614823e2ac. 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/FRR642301375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb58fa4392293dd36ce1b9cdadd459d26d3a29ca10516dbb08c6925c0db90ae. 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/FRR642301376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a147bb9a7379b6735e51f9666b08e06f3290a5566b20edffdaf0e9b58404594. 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/FRR642301377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb58fa4392293dd36ce1b9cdadd459d26d3a29ca10516dbb08c6925c0db90ae. 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/FRR642301376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a147bb9a7379b6735e51f9666b08e06f3290a5566b20edffdaf0e9b58404594. 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/FRR642301377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c8e7e05f9c54e7c7a36b43f89cf8de85155ad892aa577b619053f3766e0d15. 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/QZFYZ2594894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5320b290052c12699c8e225e355c02fde6a8577dd177220a26f6b9fd04d8a99f. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:01:36Z), 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/QZHN42501023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6934c234fa3d5092f8640cbd35cc4c47aa8bbdd851ae5bac5a465a658e68a503. 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/FRX852408800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6934c234fa3d5092f8640cbd35cc4c47aa8bbdd851ae5bac5a465a658e68a503. 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/FRX852408800.