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 0xc164fe4bbdddb6f622fc60a847b55605c7f05012a3c0ccfd4c5d0bc3d310e503. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c52d7f37-0eb9-4550-91e5-6ca01241258d.json and https://artists.proofprofile.net/proofs/artist/c52d7f37-0eb9-4550-91e5-6ca01241258d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Standing Free - A Collection of Native American Flute Music
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 0x820d6ba8e5598350d8f4685f4b38dab21a7b35ea95d3a6c0ef340a40019e4a96. 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/USL4Q2191860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c72ffc01fa95ef54a0c2195f3a480156c32ef0cfabeebc4a31f6b8d3c3a363. 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/USHM22174828.
Woodland Spirit, Prairie Heart: Solo Native American Flute
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740535cd4899362a5d35dc4a578ea046e19d4e6b800f68d0e126b5b78dd6e2c4. 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/USDY42257792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd595d6cd11cbd498288a9760cc7888200152012ec4fbc399db3f71ec54d25f. 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/USDY42257799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d91d68c00aa620e2cb4455f095e40a642569f00796fe85d58c7f0ab734aa5e. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/USDY42134208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf81c8d6bbca5293ef02b1570ddb24345606be4e9d89b509139269f3c25db51. 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/USHM82109192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edd264bbe103c255404817e53d9eda00d5df33196404860b49bd7ab63c028a9. 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/USDY42162318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe049d4109b5de7ebf945046b61e6edffb11392b07adb2cc9a9dae2d2b1372adc. 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/USDY42162319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60e9652ce5ea7120b2b38fd5df749777030d1e1d9f59d0365e3b0d11809a58e. 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/USDY42162320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46e0f0099aa571f263bcac40ce8088203acc44eb5e2ccaf0c65d90bcf3eddd0. 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/USDY42162325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b309db3d2cedc395d1866df94d0f47c13b754f98a56d1ffd6547b44555f4eb. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM9AA2040744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8327f87866ea736ba40368ed9f01d053b28627a33bad12a4b57f5e073f3310e6. 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/QM9AA2040747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca7cf2c2adad91c80aefb9c279e6cfb5fe3cc1fd81e237d91488231e892c716. Chain 2 (Bitcoin): anchored in block 957304 (2026-07-09T12:19:34Z), 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/USX9P2012903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe424a690ddcd13ed36417738777fe7ee9ab211af6a51da4a01a1018cb97423. 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/USL4Q2087050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3d2e5c70c576cb35756da275e8406d20511186c4e3fcc1f7f0790ba9a9e5e0. 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/USHM82082836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74338ab629a82f043fa0d87332f0d615f714050deee92893f7fd7c8367183ab6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USHM82082842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb42508892fa7fcfa23ba38af4e3a07844a1f54ed27fac72171b282e92825f5. 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/USHM22367362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa220c36769c293e5fa2587d057879659a917a842664fed8cc92104f2013d13. 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/USHM92284742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820d6ba8e5598350d8f4685f4b38dab21a7b35ea95d3a6c0ef340a40019e4a96. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USL4Q2191860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c72ffc01fa95ef54a0c2195f3a480156c32ef0cfabeebc4a31f6b8d3c3a363. 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/USHM22174828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f050d4da362a883f0bc041dcb2099738817b110a350f8e044d52a8cf565136b. 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/USCGJ2108491.