Yula is an archaeological site of the Maya civilization of pre-Columbian Mesoamerica, located in northern center of the Yucatán Peninsula, in the vicinity of the major Postclassic Maya center of Chich
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 0x5b97b9bd5121ab6e3bc150363060010f015920a157e405b65bfadee54de952e7. 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/744e2b08-371a-4ea1-8416-22fced53d1ab.json and https://artists.proofprofile.net/proofs/artist/744e2b08-371a-4ea1-8416-22fced53d1ab.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 0x63f6c5908f430f4e9ec4f691c40f6603cba8a11eedf561eaaa947aba5c3168c4. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZFZ32014984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4981bf15522c36885e512f4a659294436a0c5e7abd4ef7f1c9dee39565774cae. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZES82031070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2c73a1d53e3a892829826ce4167456fc9b3e5be7d1894531d3da4883849120. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6P2039067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39802a896da1b42e8c00f6cb92fafdb0b97749aca9faf6298b5d9824522ddbaf. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CA5KR2113595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580e90f952072f8fd8dd30ee942fa5662d14e7cba806fa84de21f185542eae1c. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/QZFZ42171302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f6c5908f430f4e9ec4f691c40f6603cba8a11eedf561eaaa947aba5c3168c4. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZFZ32014984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1826f9c9a009f4e2b01f6d1d262697360f66f0195fe028657895293c233bc78. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZHN42111039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589f34e666661f39ed543efa6b9d9fd37e1e807d9ea2b356a08f62c797b3289f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:24:35Z), 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/QZHNB2146675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa71305b9497e0d3f3c6086ef5ad655d188ff5e92408b746bf7bb4e7964db616. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GBKPL2279713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c41ac47c914e3da363f14a77dedeb858b53b899b58ba166818820a230d180c6. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBKPL2285378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379edb414f5e114b18048feb9015044d8d253b1b480fb1cd3e5796b18ff22374. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:21:22Z), 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/QZHNC2239236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6942c596d066cf82150a818d9ef085ca2a1ae650abbd9342b9320d9e8c03ea75. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/CA6D22200477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21542d0d2a87d2e0befe12dbb2dda9705481a92ff2b8bb25c053b674e45a67e. 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/CA6D22200614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5887b63b661d7a6da879203300241d8d85134114c8826c0e466029f47617641c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CA6D22200615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd103ae13080e8e048a8bccf6b07949ac8cd601068e8b7398d74e74d48d9b08d. 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/CA6D22200617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2576f4c5081b0861dce0896d9a2dbf85a441ead747ff09324ed6aa6f32465a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZFZ32302724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c72abd697c674d7d2320aae0f105915e9f70e1db9bd5eaeb67c53ce66a902a4. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/QZHNA2316116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacec4c1d0bfeda3bfa0d5f9e28371f806f64235310a481cc07efaaacb60719a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CA5KR2409337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ab0482d5020016f7e2051efe5c33cdbc07d3f9fdc73e392915ac04931ffc33. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CA5KR2463335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec9355b54d1a635908869fd9bdb215dfa784947a13a83c1b88c47d7381e8cac. 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/USWB12201690.