Echoes of Nature: Bird Songs, Calls & Sounds
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 0x89b75e93e011e89258a50417816ab7a95cd5cef02bd8a29e844f79d209ff24ed. 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/22bd16fa-58f7-4b9d-8ce8-783c35fa5fcb.json and https://artists.proofprofile.net/proofs/artist/22bd16fa-58f7-4b9d-8ce8-783c35fa5fcb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Songbirds: Field & Meadow - Over 25 Beautiful Bird Songs & Sounds
Calandra Lark: Song from a Single Calandra Lark, Others in the Distance
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 0x0ba97dbcf2c2eb99f73c8bf942639efc7099e8a433552d8c2c52b8cb5358d72f. 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/US5541201413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0241e29e0d14635c1b0e69cef7bb0e5e59edc7c76df0c8a85787e3a19d92ed9. 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/US5541201428.
Songbirds: Ocean & Coast - Over 25 Beautiful Bird Songs & Sounds
Songbirds: Park & Garden - Over 25 Beautiful Bird Songs & Sounds
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bdb5d13bef7070eaec32b66f162dc780ee8c54d500d4774c38696859ae3f4a. 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/US5541201351.
Mistle Thrush: Louder, Fuller-Sound Song
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9d802c986830df80563b1c76ceeea003dfccb0b81eff46a29048c7ab191332. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:55:11Z), 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/US5541201354.
House Sparrow: Small Group of House Sparrows During Feeding
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbb255325735d11fb4544f057b8cb7a6471cb26a07d9837c61b53d35ff32126. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/US5541201356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7277622b4047a8e7636113dbd48685d37fd532f71727aa8cf4dbfd298c7728. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/US5541201357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da970afd93659e3a5ed7f2267d51a380b645792b9d4182ff10851abc836bcfe. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/US5541201362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf56cb533cdcf7c9cecdb0e4c0cd2c2c1fec9ba45d4a20ec3cdaa25826773f15. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:01:41Z), 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/US5541201364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bb7d8a2c2f5be992e9eb1b00823083e8545365eab91bd78c212b38affbe247. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/US5541201370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1b7b80b0d7d7a67a57adcbde85827dcabf5a4416275ce0ed21bd8ac501b147. 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/US5541201375.
Chaffinch: Song from a Single Chaffinch (Regional Variety: London)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf87b70b2905a99e5abe5eb0350cafbef99de9473ef0bc52e7d08ba4fff8b880. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/US5541201391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd737d97355cfa6206286d9fda48762838cb6d396d93c1129787b1cd75d1fbf1. 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/US5541201396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2364da86aca64e0b59d5647af4c502cccb302a39659b6938c6bb5be86adcaa. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/US5541201402.