Los Internacionales Jilgueros Del Arroyo
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 0x499e9f66bc67ffc3e4d261e5378677c1f5d426fdd9e86c88932e3d8a5f01fe4d. 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/205009d7-7927-40ba-b982-23c5b14da152.json and https://artists.proofprofile.net/proofs/artist/205009d7-7927-40ba-b982-23c5b14da152.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 0x8871545bab16922bee6a5af117b3ce3b1904ef11c2346f2d79bce0ea188bdf5d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USZUP1011070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf713638e34b4e121063fc05449167ac2089878a84ed792142f3f4fb6708faddf. Chain 2 (Bitcoin): anchored in block 957703 (2026-07-12T12:26:40Z), 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/USZUP1011075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9b6579efe66c4934a59f12864eeccf3c2dd0d46d55719e5d6e707f23cddeb9. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/USZUP1011076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08efd58241d5fcbbbe02657e567fb5287ec7ab6f4aa83d4f83c3b7d47956f5f6. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/USZUP1011077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0b420de66a6d3ff1e06c4f85603412dab52c042f6d67145536c06ed4d795ab. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USZUP1011078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f95e632201ff84a4951afddec7cd690428be3517c0d61b783e5d1ebe59fb1c0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USZUP1011079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3764d1c5e5a6d1043aa53dcc2e9bf5461bd813ed06948c44b88ccaf510ce4641. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USZUP1011090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d0854be6c8c64faa7aaac49f0c686e29638d9058a2007ca7cf3363fa081839. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USZUP1011094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd2af0ff47d5e7aed1d35a32a288a6266bdb9cce3cf0c768f2dcca70e9b4957. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USZUP1011095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fa0a88b2e2335b3fb3f30f3a987e1f379acd22209245d5eef99dee6472e64e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USZUP1011101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3038c5dff1a94d67b27df609e79141abd970872fbfc5484d6ea90f92b5e9b645. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USZUP1011103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d006e3d93c5db4f8bf299db28e8dd0375c6cfbfb84cfa8f2e717bab09d85d61. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USZUP1011104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59652be9015d4cde08a1bdf6744bdf639c5002fd1ffbb53fd3f8ecefc7732387. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USZUP1011105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899ec747615b17b7c185814dff4018bf9f9749c1f931491bbec34ed7e03423f0. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/USZUP1011106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b8626bc9c1aa5baf603ee65f7cd41ddf71fcd33b7120209f66777e11d93a64. 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/USZUP1011107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0672f6292c373a6fd901862d3d710a31de0e29fecd43fa7663e07159c6b9915e. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/USZUP1011109.