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 0xa6a4eeecc76d9b4ee59e19da3fd0099e9a258a931f347f704d7402d3ae95b8b8. 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/e996f96e-0366-4bcd-af49-2d0196da722b.json and https://artists.proofprofile.net/proofs/artist/e996f96e-0366-4bcd-af49-2d0196da722b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Soothing Spring Spa (Loopable Audio for Ambiance, Meditation, Insomnia, and Restless Children)
Rain Drop Medley of Roof, Thunder, Forest, Car, and More (Loopable Audio for Insomnia, Meditation and Restless Children)
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 0x523340abd88aa6a0d0933d972f7157dd84b8a7218c4c9d26a8a815da9ab3849b. 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/QMHNS1301869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52282a5f072345a619275bd05240eff1bcc7fbb6f012d0b04d6194877130dee5. 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/QMHNS1301870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7f9931c352e9fc97677ff5ce2e639d41f0e9db21cac2db495a721d3b90ced2. 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/QMHNS1301872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46332f9933be6e5fa007f26632e5b1bf921093916c391c2a8628706668e8b168. 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/QMHNS1301873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe133220dda85ac03093f3f6461dbb5b3dd2c6e86373e2fcacefa2a7b527729c1. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-21T17:34:19Z), 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/QMHNS1301875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8532dac680d833279d6da18e48076d9011b026de425c0d53f1d13af0055c7c. 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/QMHNS1301876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef270f4c6c20f7673e075aca65970048877438301317ee2dd37c524950671c7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMHNS1301878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa558f9f1682d0ecf8feea09b3300f0eaac886e994e585a599896824d1b07aaa5. 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/QMHNS1301879.
The Wind and Rain Knocking Against the Bedroom Window
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b66b54f9ff5cffb30a972b5193ca80451217afb62a88769f1e78c5ecc81d54f. 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/QMHNS1301880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781b62302cd3fef68312ede2db27626f12f95992ab08f39bb87da83dbf20f77b. 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/QMHNS1301881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823866289e2e71842cf1bd0757c562d5052cbc824006232890b4d7587294c417. 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/QMHNS1301882.
Rain Drops Dancing on the Car Windshield
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6e405443ab9d988b8c2a8c1f0036b774ec6314034c1238c1167cdb87ac706b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMHNS1301877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e14d5af3596dcb21d4cab0a1428ca9d7660c680a5f6a77d4550c7ab4ba81a0. 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/QMHNS1301887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0202090c3c5ce3cab07f7e14c8e26b2cb95125dc60a36567e9f26710a39ceb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMHNS1301884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a3d709362a80ef78909f22d25070f7a20674daa4c754606ac962f627423c03. 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/QMHNS1301886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52b631e6df722a7af40e50054375e95dc3a7da22b69eb5f2dc4b0430f2a457b. 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/QMHNS1301091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371d196c09e2cb92c24bbaaa026f93c5be3f9c7323522d55fdf1a07c3536528d. 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/QMHNS1301089.
Trickling Water with the Gentle Rain, part 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b3ed008ecc5e8f02de12199265fe8e7e9603b802af99b0c84653681c8cde30. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMHNS1301718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332a7637d858ae6bfaba8fc08181c2b3f9593fef11607494ce51720c5752f865. 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/QMHNS1301489.
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