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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa6cacef0c73f6ec1fba024c84be554cc51935449ca792807f67202a00b70d6. 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/810f5d4c-ee42-4f47-b74d-049b582f6992.json and https://artists.proofprofile.net/proofs/artist/810f5d4c-ee42-4f47-b74d-049b582f6992.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rain: A collection of Rain Showers, Driving in the Rain, Thunder, Hiding Under a Tree, Rainforests, and More (Loopable Audio for Ambiance, Meditation, Insomnia 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16716e8cee30e01f753ccc2fed2f44cb677997171cfcd60794bdc3403b10f682. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMHNS1302231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64cb3d27199468022cd5f5d7559c67804da39c19de41a786cdefbc10540d73ae. 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/QMHNS1302232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d5f9f90070cd775f7b72c609ada1078221a5bd6bfb33dd3bd766ab5bc7f621. 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/QMHNS1302233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794889f6596884294f13e1eca234e56fddaaa428d1172f4122bfc6f2ed750dc5. 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/QMHNS1302234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bcf803678390fcb4f70d66157325bcf8ee487ab6159373812d6f065e303574. 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/QMHNS1302236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831f0cb99e450d03f685e5cb0fb7ca64c2a86034a0e5cbfd73769fca867bdbba. 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/QMHNS1302238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872d0545f3125af4aa6f9b39fef93b4c9a9887a3590f0fe14abdc90c88ef26d8. 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/QMHNS1302239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90238d24f1d704f59239633a79347752bbaf9c1ca4f0929feef4f935a339ad2. 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/QMHNS1302240.
Listening to a Full Rain from the Pavilion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9adc739b60370fabb578bf3ce5ba2528111fb4b731d5c09970c97a2018ab04. 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/QMHNS1302241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f399afbfe0397cf21e573f66acc68275d1f7e2fc1b83258c53e42feb71424a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMHNS1302242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2278a095b7607a31b46071c652f73d4491a56ba0353e564319f5c0ee3af53ab9. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QMHNS1302243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e08699b5758522efb3491fc0613e75e5b444e1b471aca3cca4770cf6fdbb9d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMHNS1302258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7841d9e5ea0326eea8cfbc7ef22523d90af3b6b98011ef3d9e3a7e14a00d80c6. 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/QMHNS1302244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f70e8a4d270a885697f6dad52a2822509dca7431fa022224ca89814346589d. 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/QMHNS1302245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b6bbe0215bf3897febe07a97815697a09b43b7ed94c2bea95168178277a596. 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/QMHNS1302246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2316f1cc0da359a97652a73ede7890bfeee97d204ed57d9d0e523a42a27e31b7. 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/QMHNS1302247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf3fb95a2271da15729c4d9142321fdeb8a7fdd8950d2a84764b947b769be19. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QMHNS1302237.
Rain Drops Dancing on the Car Windshield
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f5745a99b9eb22bee12404f1518f313b244581f55cd5231f72c02b935aa089. 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/QMHNS1302248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff58e986165736e897225b8e138cc33811ff244923fed5ce43b1118e289dfa06. 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/QMHNS1302249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347555445baefae8d168e32130a075275868fc1d52c3fdfa1eebefad32aec994. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QMHNS1302250.
Sharp Spring Downpour and Thunder shower
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a51c59b68fe39c0179cbadd9c62e481aa76943dd4a973442673852f9e600a4. 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/QMHNS1302251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f7c79b303fd0e7045b58e3780ea5a961891c80861dd74c9ea79da65a73d70d. 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/QMHNS1302252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917ca98db3f68fbe820fca4a6a613948ab2d1ab5b57776bcfdbcce3b74abb5a8. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/QMHNS1302253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266de67edc22b0c4fba71a5e4de643302cd81fabdea97254aef32aa09b6c947e. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QMHNS1302235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805a64e6fd16797ef52d65ecd56a62e8d156b2af84ed753916a1fd5e900b8818. 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/QMHNS1302254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32302d9a56c3ee19088fddf603ca5cc8ba1c06f5af61d0c944283ab7ced479a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMHNS1302255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3a52d374cf89eeab2d6dc9a3a5c93e0b85350a893bbd27b8b64fa7b219b996. 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/QMHNS1302256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b535a6deb985e464237bd7aa344aff484995f0f944e30c40fb03ddb521497f2. 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/QMHNS1302257.
10 Hours of Continuous Rain Sounds for Sleeping
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0655bd630233a2687bf65e53e0da0c622539da3c2409ca32d67c4564d57d87d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE5IB1600624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83dd29071db3b6a124e7c1cafef183493f2dbc366d0bf1edb1866b6b5e6aaa9. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/SE37J1503783.