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 0x04d8816edc776a5f30f3487998ab64d090da82fa1466f4397d6de869f44c2225. 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/a21be3a7-3e9c-4ab8-8ea5-27bf857c526a.json and https://artists.proofprofile.net/proofs/artist/a21be3a7-3e9c-4ab8-8ea5-27bf857c526a.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 0x960ee55f93e7997d257dc8aaa3e76a9b745c7d41231cc3263b0db44aea2af7db. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QT6622503719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde332b7db1ec6defeece52ad9b23f7d122595971606615ba137ef87f591f0091. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QT6622503955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d95c1352b20a4cc21088997988f29b0c575246ecf52eed0a025b06b56d7c107. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/USPUP0812960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce57191eac9a6dcc26ed950152b154158a81f649c7b954ebb10c59382219676a. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/USPUP0812961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe110473e9611c2d3ceb5c49f1c728f9f397b068edf84658800b52d2a77a4cec2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USPUP0812962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0c8178229f1faacadf7ec92132119b419f77969edce7a2abcefb02151fad09. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:32:37Z), 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/USBMF9322202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a17b0a9e1d2efcc68fcad6f0907a3d204a67acc2ec25c47c86e7f3e6c2be6d9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USBMF9322203.
Bahar Bahareh, Homayra 4 - Persian Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7beed8a22daa23e3f8a5aa1feda3a2998f26390a040f826c8be62124f146803e. 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/USBMF9322211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a786d84b7ffb19a312aa6efb4a1282aa0a4e1e260ae26f66092d026785e7fd. 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/USBMF9322213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afc40c9301bd7ddd27ac5e3c01e8d26fcbad1d18d31e82dd3d1de6e41018658. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USBMF9322214.
Bahare Zendegi, Homayra 5 - Persian Music
Homayra Golden Songs Vol 3 - 4 CD Pack - Persian Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a98f1753753e51baa75fe729ed365346d405d9bb5aa8167321da776d32f59c. 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/USBMF9344918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac01c554159a21ec02d2bd22cb9ce38bc2cc152d708a4452fdce276b420c6634. 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/USBMF9344925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c08276eee8aae98e91e4cf7da55b1f8302f17ae33acf73d0582632715742f1. 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/USBMF9344926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa157593820025b3bffa51ba5e170fa10af3450492464b915f8e1108849854e7f. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USBMF9344921.
Homayra Golden Songs Vol 2 - 4 CD Pack - Persian Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851c918f9550f876e8fd06b5008c7712445f46bdde4ed3b619655330c3adc5ad. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USBMF9344814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa48f4f367fa9549ed173b491c0f7ec75ae968c02d411d312d8892be63e45cf8. 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/USBMF9344815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda0418a9eb6476aa0940dac5260463981c98e4a4fa202e7aa6c470909a7b6f3. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:58:23Z), 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/USPUP0812994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a7634f5ffb5a771fe89e9ce5c3fc1ec72b375cd06ab73a94a248d0021e5760. 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/USJ3V0940270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ece9061a795835488f22e5e40811e55fbc330510c722507dd05897a631b8c5d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USBMF0440723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076cd656e2da607eb1236acbce2778bf436ab1b6836cff0ec3e32d4b0541ce88. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:20:47Z), 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/USPUP0812985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb581b2dcbb8adad198e532fdf1977464aa5814c1b03c0272143682a74fd47a3. 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/USPUP0812987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bc9bbd7161e519b774cf55f71c771227e7d97b7670d74387542b22415bc356. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:56:58Z), 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/USPUP0812990.
Homayra Golden Songs Vol 4 - 4 CD Pack - Persian Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ab1e1da3f08bf1cc2d09bb6713682740bf205bdc4b803c4dd03cb4041492f2. 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/USBMF1125915.