The swallows, martins, and saw-wings, or Hirundinidae, are a family of passerine songbirds found around the world on all continents, including occasionally in Antarctica. Highly adapted to aerial feed
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 0xe6207b7cff631de463007b8d3490c88aa079cce9b30373a74f3d4f71cad908a2. 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/29c683e6-d946-4c73-a784-70da8a6bf933.json and https://artists.proofprofile.net/proofs/artist/29c683e6-d946-4c73-a784-70da8a6bf933.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 0xe89c614fbd760cd8d9cf60752d647b8f2b20e8135b93fa9de08436e36e1c3fb7. 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/GBAFL9200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1ea128286ae9bbc5b01920ad805aacd16606d1e00a180c12c8d9f4f52d5586. 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/GBAFL9200142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e0762c8ffcd4ceffb5052dbc2fa499b72e11b421f1f95ef508f86b9f35cb07. 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/GBAFL9200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501e6db7ec3ad036ccae1c9307a5832db64f265f92b65098be4b03ae61c9079b. 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/GBAFL9200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fedb6f52e78bd4ca63808f0931fea59418329ed9c4f1fa183ad621c8f3a6616. 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/GBAFL9200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1933011b84a2efe269ef7f494765533c18812abd1abf21174ba365614d25b1. 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/GBAFL9200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33a26dc6c7d163ba89338e5706e03bb33e685bed15bea586190cf52da1ec57b. 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/GBAFL9200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc576a8f2961ccd07dbb124e04e78975675ce51ff5b9661c4081b8869bd6e11d1. 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/GBAFL9200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62509c778b62ecf16357e3cd235c9e7ad6dea76a09d6998dec3a2f09ecb7850. 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/GBAFL9200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab2248a087f15275605adb441dc11a2c063248365e13936306d09a15ab9d994. 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/GBAFL9200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319c9486740623e288fff9601f47c268c303013cd5d1bf47bb7d8dcac83a0d0b. 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/GBAFL9200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9191cbcd347b0bea1fb4835da345ded1928fbebbbcac7285a43134e6d1f00db. 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/GBAFL9200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d4bcd36fa942756459fe556974f9381d880e84c05a3c8e55206e903e46a071. 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/GBAFL9200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393c95b48d6111ed8b2792e0f1c9db7f8370b15a128915eecede3fccf55bae6b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBAFL9800113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1325516befec7e8979967ba4efbc3c3690176cfe4ca393e423cc2753c918a759. 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/GBAFL9200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab556e732d9c0c5fd642a39b1ddb37ec273c8d6a5a5c6b1b981fcf925b8305c. 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/GBAFL2000237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fabe3f71366ed208e4ec93c3217d9e23a240e4b72a1e2e7df707467fbf448a1. 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/GBAFL8100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe741372f3c8d1e1617e9028853599c7952064a01d36d13dd11ce48aee18bea90. 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/GBAFL8400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa353cc4c058409b12035d976cb107c257035ad0efbf42d368a1618abe0093850. 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/GBAFL9200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93328ceec633cba80fd33bf85ee5955f5cf76f99218f511be392782893bd46f5. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/GBAFL8400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6715141a69497ffd4d186c04a9f0a04a8772462c734d67c568f80f41647dbc. 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/GBAFL9200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b96e0f6f3960534774423203283b4c772e3c0feaa600ed23f1cdc90fb39ad8. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBAFL8400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a65e6e74ac04db09ff24e88d7b9c698ec7026653a4a80f7da17a1ea2ed54a7. 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/GBAFL9100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eafbf270b86a493c4b0c4838ae8061dd8dec3eab639ebabdf09adda4ab11a54. 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/GBAFL8500048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a6a1c14f0da542489f1c506f829ebc21b7e5b6efc52f8cc15f747c88e0df3c. 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/GBAFL9100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e98b32f25c869b85b2a2a5931fae96b590a4fde308844ab70c560fe30acfbca. 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/GBAFL9800151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501e6db7ec3ad036ccae1c9307a5832db64f265f92b65098be4b03ae61c9079b. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/GBAFL9200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2b441402e63817cef2fdabd1eacb52fcd41cd0c7c6e88d1a77004448cb7fd8. 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/GBAFL8700072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9e4b7c720c51cc7a3d851a37c0dccc02205e364545b887e7e443b3dc4f6d9a. 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/GBAFL9700103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e46ea861a37a35a14fdc7dabbb266d8f416377e391d27bc1e56db6764ea592a. 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/GBAFL9000041.