The Tragicomedy of Calisto and Melibea (), known in Spain as La Celestina, is a work entirely in dialogue published in 1499. Sometimes called in English The Spanish Bawd, it is attributed to Fernando
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 0x1b0c85969cd53c913d00c31f97e5387de595c8deb6f3baf8dcaf4faf57899967. 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/b6782a08-ee35-4ad5-b53e-59ab41ee98b5.json and https://artists.proofprofile.net/proofs/artist/b6782a08-ee35-4ad5-b53e-59ab41ee98b5.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 0x52e58d59c5aa72c872bc4c883642ea7c31601964de628a060d668c5de3cc96c8. 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/USL4Q1739789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d2693bc504e76b9eb2dc43066fa0e3ef8e83f9089e76e256f2cb7469a4cf17. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USL4Q1739793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6228e760d959c45e0ea50eca2cc06e5e0e3760f7954d5dea267bc32bca599727. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USL4Q1739796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e58d59c5aa72c872bc4c883642ea7c31601964de628a060d668c5de3cc96c8. 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/USL4Q1739789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d2693bc504e76b9eb2dc43066fa0e3ef8e83f9089e76e256f2cb7469a4cf17. 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/USL4Q1739793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6228e760d959c45e0ea50eca2cc06e5e0e3760f7954d5dea267bc32bca599727. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USL4Q1739796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e58d59c5aa72c872bc4c883642ea7c31601964de628a060d668c5de3cc96c8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USL4Q1739789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d2693bc504e76b9eb2dc43066fa0e3ef8e83f9089e76e256f2cb7469a4cf17. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USL4Q1739793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f3cfa811fc70c34dd11ee6ba4d5fef94cb73413e223af71f490501738f7259. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USL4Q1739794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6228e760d959c45e0ea50eca2cc06e5e0e3760f7954d5dea267bc32bca599727. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/USL4Q1739796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cad680ebdd49f16fabe1e2a5acb7471c6092ca5d36c94d3ef436772051c9dc. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/USL4Q1739798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb254e0e3521c72af5a98d59fc33292843c711a280a19770659e841902cee864. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM91639408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb254e0e3521c72af5a98d59fc33292843c711a280a19770659e841902cee864. 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/USHM91639408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae968cd0678361a839e878fea1fb243d60b08e1510373c7480ef78a653557471. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHZ42289337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215268c8781b5d2f77d836d27cc2ddc700b21218119cbcf87684c3183e21840b. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZMZ92255841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47182769a0cc1d045311f54e2b3f5012fc88efa1273bed41c41063f26ffbe1e9. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZDFP1946115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5311ee72869808ec4f86f8f03c363ec246cea30819c8c1b488372bae3e14ef7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWDW2592534.
Geassassin X la Celestina, Vol. X Parte II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c7bae988b3e2b204158f9ba98b36502180f4bda54821ccc52fccd55e85d756. 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/QZTVM2426481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4f9f2146f22108e70e47b00b35dd88e70e814b7c1ef69f25aefec5abd889bd. 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/QZTVM2426482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb64f5379400b9bb9136dc311f43d58a19ffe8a6be2fc59d2afe451dc1aba2a. 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/QZTVM2426483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf9386c4f209a6fcb9fcb7ee10c817272089b49c5e0c40643a86dc0e61cd9db. 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/QZTVM2426484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d2b16e0d9e6f2e76aca7c0d303e2c88c7096cf15e92c5e7278600ff9efb25b. 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/QZTVM2426485.
Geassassin X la Celestina, Vol. X Parte I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322e339de428c74a84754d6c8555cdae8de86a13000ab263f2d6f6e03b2d23ce. 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/QZGLM2488184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd193cc9a1fddc2b3f896432882b030c904cd3dd2344c1913355424e719739923. 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/QZGLM2488185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c9e8a6c930ed72403d3faf8478b95487aefbd4ba5e2df2b975bda8d84ac2f7. 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/QZGLM2488186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95eb77be4587a78ff24874f3edf735b19e76580539a7b61761e933186d982d2f. 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/QZGLM2488187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b79172f575622282192cc38af9657f36e7e97e208835403ac70e54a7ad10709. 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/QZGLM2488188.
Geassassin X la Celestina, Vol. X Parte I (Live Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5e01847119a22dab60e710eb84f396be372d3e27eefc64c43b38b2becee633. 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/QZ5AB2464725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffe2fe78fc8954ea40943ae592f3d70ec582674cdcc8df6921ef58b7dfad6e7. 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/QZ5AB2464726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe130b49826cfc6c200a14cb8f629041bb45f138e15b2b2b7bf1ca09dfca2f923. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/QZ5AB2464727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e7d4dd02ff729c3d1609750d67b852bb3aeb7744a9aa1c4b42b4726f1c7e0d. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZ5AB2464728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb004e778622e23cebc5d5efbd68edf7ee4fb7f6a74d8d38d7aa95dd9f90cd456. 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/QZ5AB2464729.