Positive is a property of positivity and may refer to: Mathematics and science Positive formula, a logical formula not containing negation Positive number, a number that is greater than 0 Plus s
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 0x23d3b08356288e207fc27e5cd08085c2e60d62d7a9eb8611e30e02243838f324. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb3baf96-6361-48d8-ac7e-0b4b11a70048.json and https://artists.proofprofile.net/proofs/artist/eb3baf96-6361-48d8-ac7e-0b4b11a70048.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 0x34b9f2a44cb2bab4520c71ff8bb61a3d7bff9978688a8167c3e1c1bb91ff4fc0. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:47:44Z), 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/QZES71967048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17c6e8c5aaf7919c1441b7206d31a9355cc9cbac3d1eda4f3e9d470e68ac190. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZES71967049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066a5ca621f27773dd8f05cf5ace647696f9dc16ae5e9df879e013f08acb6bcd. 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/QZES71967050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d69d5707bf8f4a3855fb1301ff26d256b1a5242b73863972010e0bab21ecc6. 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/QZES71967058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa365abe6ba0487ec7ab22cff30eac67cdfae293f52fae0ecedd395d11f67405e. 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/QZES71967059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09f1b209aff4c93a31a2c8955a00ee42c5e59ece1d3f2e0887a3f33091b945b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:07:18Z), 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/USCGJ1177806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4b62fe11c091d2c5d0c3fad0cda23b629e4d50ff944200f88c01d5ddeaa5e7. 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/QMRTJ1250017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ffe348f632c1c41e25a9dd1444560aef08477a4924cbe3071f31d35b58738b. 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/QMRTJ1250019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22275b2a062932e70b7e5ebd9f7f0068a42134c52223464cd52b875218bdd994. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/TCABA1104733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ba0580ea9c9b6d771622e56c8efcaf82fb21bc28699bdf6beb77abcdd61238. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/TCABD1115047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacaf0651d47e9d605cf5baf2c30233d66a7bb001e445ff1650c0f940dc95e8d7. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QMRTJ1250025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50847f6f454cc22ada42a138de0085e53599bd98d82aa78ef5ade9b893e09c7b. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:44:06Z), 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/QMRTJ1500164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06890acc1fe9b995199007aff1636f80e5c8d82262d49e9aae41ef4810520851. 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/QMRTJ1500166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df68ba692a486dd2146183051ef8c32de7109e4a0e89b92946b77c438a6279f. 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/QMRTJ1500167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3282f02d23bfaf4106cc84e5b20ba43071fd1b76ea05aca2720f60f77972c5d4. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QMRTJ1500169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3003cc96d91face3c0f84bf99982ba4209bdfc521f6d83957967b9feff843df2. 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/QMRTJ1500173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d591b0a7afd166527953d4e6f616603d8dde56fdc2424196cf173327be831f. 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/QMRTJ1400376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d8c16cea0fb46070155ef09c74a68fa51fc854580f26f2aa8375dfabfd46ca. 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/QMRTJ1500175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe20fd1cc12d78939dfd6fb1e87b15e70295bb2d3ee5b381cc4d81f71f7ac63b. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QMRTJ1600166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a62becf0d089641ebd8f3828b41b9fb08dc0b4a8d8956abe8771c875d10ad02. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QMRTJ1900348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef58d0a51c598d13dd922dbc3f2a755f365f2afdfc47b1c6056e4dfbc34ba8c. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:21:46Z), 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/QMRTJ2000688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da59d7786a61f2bb430ef3c9ba67ab985c4d0024013fb91e5ce5a7102d73891. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QMRTJ2000692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8532329746126a67ebb97231484021d769bba32b616bd222d8756fe51a1e48fb. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QMRTJ2000693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204a02072eaf64527655fc3c608816d9a70fdb1075d4de1694e46990c3efff53. 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/QMRTJ2000695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950cd66fb6e76b3a9a7fed9011063128adb4249c827dacd47f77a58277702d5d. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/QMRTJ2000696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05eca1ea2d6d7d0358de46e30bdf0f416b3c6d5ed104cf13f8cc44dc0990ee9d. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/QMRTJ2000697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0abf53dfec12fb9b7452411b1663a41e10c61bf6974a0bb656989a513a5970. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMRTJ2300395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2bc68583738abf745831815876cd171dbd7c1a736bcff309955489988f1bd3. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QMRTJ2300718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e2f664d3761a0effc74daf92dd6e107489420dfa9584a42e6f0d0474698fcd. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMRTJ2300719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cc2450c0a79a5b0e5a8282b4897f3f160dd9e9b131a784b0c5deb71889aac9. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QMRTJ2400204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa71f152768a07a86be74cf87d37d8c6843792992d5343c82361a98c663ee87. 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/QZES71882287.