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 0x6cc2aa726c2a93126ee28e77378b150d16956f20b6ac1be34c0f89378c849059. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/13f7d21b-49c9-4d7c-8d5e-418259eb9e96.json and https://artists.proofprofile.net/proofs/artist/13f7d21b-49c9-4d7c-8d5e-418259eb9e96.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 0x60ba474f0f85d37029ca203b4786a6ffb54bba6a8f8ef7880a47a70be03b959d. 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/GBEWY1200400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5853744aa8dac4aeff79dbbb2ee57a6ebaec24d9fd86c815eb231b78571279fc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBEWY1200401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce28f74368988e2e95e7c34ccf5044037ad75fef590515a23c623f55401d9093. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/GBEWY1200402.
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
Computer Incarnations for World Peace II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f7daa5dcd5ec2e5ba949ccd3114dae78f4ef772699c34d0fde8ab3b177cad5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEP960899008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d7a1eca3c3b9681c64c362d467d09fca84d1f0b18fbe8d1975ec72f9c7e6ad. 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/DEP960899009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44174d6712f901c6bbf74ae6d4242a6c6ac7cdddb0d37470d9c87adef3e0b104. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEP960899011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70d00f40d5559e61ccec5534331cce0d5d9cd67fb208961049a6441d5ff5903. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEP960899014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c10f4819ffba3ef55f7f812af53217ae2e3cb31de5fd0b341267b44bc8541b. 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/GBTZW0700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b92ed11974300248d8373edd10eeb718015a4726d817e5a028820768c24bbbc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US2J71110301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950a81a9e39514e8c8dbcc20e4193e6f7d87b75569efb3ba7a5f5f33028cae6f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US2J71110303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c5ae48ea969c2220070117c375ee73d930f70aeaf099a80fea9e9d8c06bde7. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US2J71110308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3ccd017bdc766cd6a1b9404cc921eae1ea781419a2d4c8adcf124db1c7a4a8. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/US2J71110309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03b95a3ff9fcf25edb736b406a7d9765f05f88df630e150248ad97949ba9c77. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBZHR2300381.
Contemplation II - Colline (incl. remixes by Mark E, Next Evidence)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc736dfe1e54c0f0c937df0114763a96f3ffd47a703cd4428212740b1fe2a2b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE2WJ2002002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb6c4085d2c0fa4df0faf2b8f0987006599d349c3dca4ceab5838c84f96968f. 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/SEWKZ1600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5f9babca4b436a1f415cc9e6df444163a0dee94e3d0ec8d7cd5111aaf5dcda. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEQ020602766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe923c7300f2a8485e832ff1eda7bd755a22823a87fa65d8c791e81e905e65e13. 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/DEM091500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7538d73557805d3245c0ab543bab8c57e1c478887952e8e1e33a270bb4bfa05. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEM091500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413921aa11dd08120475a2b5920107989983a4e9146b9181a3910454cd8d5cf7. 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/DEM091500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e527cbba63f84df1d17415c45252938ac65c44bbca4e69ccc17de6c2aa0230. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEM091500061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955895cc18bae468872c569166e1d066419529adfd99b42b4fc7700027fd1384. 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/GBDCR1200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd743316344b9def481ae4e909457a03dd09d836507d8ac25725949a663e5957. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBDCR1200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a7becdad92aece0c6ab6ff2d31c761f6553d539095bb156015aa2c8b156d81. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBDCR1200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8d08646ca644d17ccfd7615df21b3a082d6828547efea9544fbb70c008356a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBDCR1200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9341956bf6c0d0949529823ce266694b1a279dd318b69af403631bdf14223eed. 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/GBDCR1200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f0eeee114af0236f51d166d0039acac28a4b0c592ecc85fc6d60027ee37bbe. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBDCR1200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da3c8d2252c671f855f831ceb4e3e16a6faaf73929551a72575a7a6d7121916. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBDCR1200112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11925bcbb4b0cf385b1b3d9eb82edd78688b4d0824f3d7e79112f064733a5e54. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBDCR1200113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b71831d35fa5ed2fd90482de5132c90aae8c6f756af035d23a27ee296a6042. 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/GBDCR1200115.
Avenida das Mangueiras - SS Translation by Theo Parrish
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec733eb7b8f4e19ac31683eb55984dad834082070eb656d10230a7152c02f2c7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBDCR1200117.
Codsall Juniors, Endless Flight - Mark E Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef7b1bda70e910f6ba512f786b7c012c3d8ab91e33335fbc8eca272a69fc5d7. 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/GBDCR1200118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9690ba26c950be18199951ef72ad32902ad3db220756deec4c707e6b55e17c4. 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/GBQFP0900701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe814c7ae1863876e0aac79d79e111027faa70acdfd648a36b2042f2797712b1. 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/GBQFP0900702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba5d02411f411432482d95db407671df731b6c4e2ea4bdefc86959b283f5fca. 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/GBQFP0900704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d03554a28b6f4963e7c8905f075508b77aa78cb959163531e2b1d7d59fd5dd1. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T18:07:25Z), 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/GBQFP0900703.