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 0x9b44d3d23e26c813652043360a1f5f23e2596a32e9e79508bfa00a7af23b3264. 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/e9a47c69-d3f7-4f55-a326-d57b27ef5f50.json and https://artists.proofprofile.net/proofs/artist/e9a47c69-d3f7-4f55-a326-d57b27ef5f50.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 0x22ec8c621d4864051e948ffc8c59fbc85facd5c5c0b27ca742dc25bd1f27cdd2. 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/QZHN52078053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4f4f147b11806afb4af0f2f28e717a328ffe3377fe31c99b8780b7e69fb407. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZHN72028636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c9d2dcc1ec936fcfec04dd133d29e90d8575c51d235949eddf9e367c82760b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZK6K2046461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d604c7cfa94c8426abec1782133d3ca07e7c7ddd753546593b7f564f2cd654. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZK6J2093023.
Isaac Foster Vs Jeff the Killer. Escaramuza
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61e74f05b79c5574cdf0bc5f3fd2fcf99b1e5b1cb4955e0a66463a9ce1794c9. 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/QZFZ52164294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abb002ca593108f311e4300673b241da806ad95737093737d2bff9eb557dd2e. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:23:44Z), 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/QZHN82171071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cf4e2ccbcceefe44177b0c39d679ff6d35921f926c9464b022a4bd3fea5cf1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZHNC2122140.
Creepypastas vs Películas de Terror. Escaramuza
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4bda976c824d1d38e667d78ebe8dc0dc0fd55a9c405b68403cc8c55e56af9e. 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/QZNWZ2118197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26038840c632a746f25d8446fa613b6206a173431919274eeee8072c8ff8639. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZRP52193388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c7c5490b78f322f55343f5269dbf2c228ae098ac82a5c40b8576386aff5db1. 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/QZHNB2211053.
7 Pecados Capitales. Nanatsu No Taizai Rap
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb800a8fdd89b8b6395076ca6abf57455ac0d717f13e5f9e45ba2695e1f6f800d. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZMER2288289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eded9ed397da34fae29a1fdc84091d03a08eb992e1aaa8369fbcb23c895f873. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:42:25Z), 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/QZNWR2224541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175ca7cc1d96a3c361fdfd23913676476f9a3bf869ae7eee42eddbed59244461. 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/QZTAZ2242953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6579f2f101ecb79f053b2bef4b4d1af3b98ea5cb1e76b8261a01929d731ce8b8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZK6M2394428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43052cbf8b30c67b07bfd13d37743df145634234f7240287b95b201913520526. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:33:01Z), 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/QZMER2341452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b32c3a2a8ac47551d324462a4114b5dc99869c0ba387cabc51f7def67fbe64. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZNWY2315150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7593181a39262d385da545eb0dd25cdd2d7615582101fc6b18ab190956f9a383. 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/QZTAT2394927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038ba957ee96493f796bae77af751634cd838a80b28eb2c7a1c30885bc701d1f. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:31:24Z), 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/QZTBD2350465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2515796359ac73c05a272e55f6b8997f44a2b41082faeb0ceab22a6a2ba0b790. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:54:52Z), 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/QZWFM2312039.
Alastor, Black Hat & Bill Cipher Rap. Trato Final
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13669d87d8bfeef0cd11b89f11480b2cce77cea5f7789671297e85aa563a70a3. 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/QZHN92428661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170dfc42f0a2d7ccaea17d0e4910775e4b027d8472bd50dbbd8979f8f6f95287. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:11:37Z), 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/QZK6Q2476748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8626606a84d6d54dc1fb642eb08d3dceb60846a3cbaeb1f28857edc1a63fbe7. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:47:28Z), 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/QZK6G2484890.
Baki vs Kengan Ashura. Combate Predestinado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c3bd91f93246dfbb1e2d2d530334f0da4173dc79cc07ff0b617b201a0a4c7c. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:48:33Z), 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/QZPLR2496159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cad700cdcc3f966ce0b7a3b1f5b0e9c6917bdc531fc69534af17081b2531a7. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:31:27Z), 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/QZTAW2482204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa997baf14442bf3ff72a10bae06f45253dfed41374b24634645241413ef8f34c. 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/QZWFP2401603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f0d4dae7350c6197c3a1358efcb8713b9a5c35a89ea501c0d0e5657d158ec3. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZZ7U2403506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4784be3a7e760d5b64a1411f1170112d6bc1a091052c2863941b1b5419d32af4. 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/QZZ7W2494700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ef504bed7018a24855211fcfc56bf1b6ffa0a77682e0600a98275d0041a6f0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZES52561278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224986d66e990876d2c631403c0da61ee728c9dd28fdb99fc4084998dc92bf4a. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZHN32532688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420041321cea594654db2c6edeedc22ccf50f12f3849317ea1d4106e270319d6. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:54:53Z), 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/QZHN92511848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04216869e235e4b5dedae8ae7b222a53dab06f4e4944b40acba0538866989e6. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZK6P2502611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7f72458356ffee434b7fc927050950d7f4fdfef9e480b4f7148273abdf7697. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTAX2598228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94999a6bf3c4a0771aa9c4ba99d9821601e2da62d279daccc61bf65fe0d23d0. 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/QZWFH2579215.
El Dolor de una Mentira. Loki vs Simo Hayha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7d584b4237dce90cb45f543102da1ab1ecc408ca45374b57b27169c3f10c3b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QT3FG2523936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa99e455418b0d03797418bf8ad93c72ca80f7f9a53793b7557801ea6914428. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QT6EC2591621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6b5f4c912e6b9245a68d6ccbd44e64349f0e3475c8d74d09d83da26ea21e79. 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/QZRP52351535.
Creepypastas vs. Películas de Terror V5. Gold Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0f37e6d6551aeef9577a126398947b5affe6ba083fb36a78788946b162a550. 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/QZWFQ2302960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b21102bf586e2e751ad4058274a87e7936181ed3f82988433abc9594e6f343. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZTAX2272626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e188ddd5ff5d8bb3b10d9e6bc9de0366bbd55f70b46b261158697e40f9f026. 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/QZDA82262401.
Five Night At Freddy´s Macro Rap. Halloween 2023
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb334a9d7ca61950cbbb0785af69644dfb1d36f6980224e8752efc406e3c44553. 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/QZES72427866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efbf511d3a83ede464593bf891a9cce5920203f052dfa12ba805cffd9415ef4. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/QZW9L2268922.
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 0xb3d88da26088f8674bea2ff95c4de4fffe25eb311cbbc0a4c9d99b87c240d5a3. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/QZNWY2146081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062ca1c1471f540c23cc2a289f63d22e5fbcb7febbe5c10401046c00f7a8d9cd. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZFZ22489666.