A songbird is a bird belonging to the suborder Passeri of the perching birds. Another name that is sometimes seen as the scientific or vernacular name is Oscines, from Latin oscen, 'songbird'. Songbi
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 0x2e7d84704574d15ffc27ef61cbe1742743ed54b2364eea09261d6cff61ac6caa. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1343034-b1ae-4b4e-b900-f05cdbff7295.json and https://artists.proofprofile.net/proofs/artist/e1343034-b1ae-4b4e-b900-f05cdbff7295.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 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 0x27bc09982e3a89cc2c0d6bc0b29814f8dddc51414add7669e57155a0c31552c3. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZP7F2158103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119e669e1a47c7c51dfe08ef7ddde2b93d88ff38f2ef889cb48ef0b9820a8836. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZNMX2254746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fe4c7cf98ce6da2c3c9eecdcc3c0074a36951758a7d5776642d65adeb7791c. 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/QZNMX2254751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae95e2c07c4e2ff211a55ba878fccd7a23617b3a0592c0c7c38388818a0d2156. 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/QZNMX2254752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278ec9ce9f527fcd86525e4d6ee29f785e33aead18a693a17449a61c8ac02cd5. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QZNMX2254766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eeb57c76b4ceac521b6a77483d6d9208fe387eda4f8a2a3b58b57b88bb04009. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QM6N22011912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b9f6b25e2a22845ed63daf37db3b62940592995dadab4f10f0e4857b3bc001. 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/QM6N22011913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029f95f5c0fa2b1a6bf7f1597734bd2c2fb7869c347debcaf2e7453935d69588. 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/QM6N22011914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc63ce0b4323e09f57fb0776d4404265423410d5be6b2c092875d1de97eb4e4. 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/QM6N22011915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e248dce9379eb3085c303ba3259635d422c711a67ae6255c9a4ede6b627717. 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/QM6N22011916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dca2ff01db202e13ca94dc13d9d13fd2b6fe6dece7ddaf591b60aa83341c3f5. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM6N22011917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973e68e4ee1831f57fcdd6449373ef8e5a933c4cc11f5bd918d129a69790cb03. 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/QM6N22011918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce24e6a3f2815028ff3ffd27fb7c4d7116355fe9a675d8b410585140192a767e. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/QM6N22011919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e3110e6eae8f3da4a822bd426562b44e687e079a9847fb672dff40a196c41d. 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/QM6N22011920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc8ff234187c27798b2a7cdf9c955773921f4dd8f9a13ca9f52019abaccf290. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QM6N22011921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c03ef28d3de31100a5f44c71c1e53f706528510e7ebdc6ce64a1831f323f43. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QM6N22011923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639f2321996d95793ffb7431eb612af907735a1c7b7cf8c550de375c3898a4c2. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QM6N22011922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe860a364d7ea1b969bc1a32a2cacfefa1729889c71e327432a10a18da2b4a99e. 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/QM6N22011924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a752e36d3d4a34471cad73b4029e7ab9d71b4d5b73da9dea88a015a8f6eb26b. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/QM6N22011925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedea1bc707ceb1b369445d90aa48fff5eec9ab8e8f527be585f4b797bf3d755f. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/QM6N22011926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf252383c2174548deeea5be1c5304ed9b1912beb09670ecb97be443ca6c3f5. 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/QM6N22011927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bcb9f92d3c96c0e23d16d2de070b62611aa48e18607a81f12c2c68377bf4423. 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/QZFZ71945375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f7c9d5090fccbefe00ec9763dcd0ea7b8a6274ce5393f9e556ad425abc5d31. 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/QZFZ71945376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ee9eed0977668501a87afeba174ea2bbb4456fbec3b7721a7b02f5295c52ce. 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/QZFZ71945377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82571314caaed84b282a9bde5df377ee686491ba1f228010ac3dfd911f630fd. 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/QZFZ71945378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba143311eeaf3ccc0e04de853ea0f14b68f30dd07fc21f8aa18f9e7944a222a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZFZ71945379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9062c7c2a684acef03850aa7eaed37b12f6bb472d46d9f7571f0b4e3e6f7b13. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZFZ71945380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8777a54b1e295fce228f53c19bf9c70fadfd813faae2ae671bf04a8025258d52. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/QZFZ71945381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b770f9c6be43350c8afadcb34b68091e71a1caf9f67b8ca6d9c1b56e1c8bfdf. 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/QZFZ71945382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a20e159a0e21dd206b3e89a1d43a3af48a7d83d7294be8373ecc8812b9d0967. 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/QZFZ71945383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f26e6eb935834a2b90a0c6722403268e8c504122dd63035285ac3b807a00067. 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/QZFZ71945384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77712aeed2929b8448440cf48c819a57e28a8eb5f8cc0a5c1be9278107fe770f. 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/QZFZ71945385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58afa6af506f06128015ebeadf9fe45d257095b8af499aceaa42ee958270a70. 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/QZFZ71945386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8101942e1251f7da375ae258672f94b6de6ca6f420102f1f78c3317943068341. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZFZ31939602.