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 0x38a8f0cd8bc6931eb6660b4cdae9b13911cd1e26080b5fc088e9010a59edb195. 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/aece5b6e-4581-4785-9fb4-2dd2de4150be.json and https://artists.proofprofile.net/proofs/artist/aece5b6e-4581-4785-9fb4-2dd2de4150be.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 0x3e4cfb4e73cfd1192dd7b7a62d44883c74ed94dae3a6a2bc396b5e7050b6c100. 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/NLPS41100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150157bdcd06fd273ceeae4cb265b37a93a80b57e111053e30bd5666f9c892c8. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/NLPS41100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273a6b38af3604a11ee0046795ebd4e5eea12dea151ebf76b23cb6d5d29075e4. 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/NLPS41100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcbe460727507d4d2a20efdfcccbdbc3fe050d4536dc07d51f6488f1c88470f. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/NLPS41100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5a8b91c3698fba1c81e524959b22e11fa73b4b2f5d3617843ff48941b66a0e. 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/NLPS41100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b9e6bf402cd2f4f8534a350505fd7286888eb900089d2bd5ba11c876d1e6a6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/NLPS41200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8376cb4856291d0082937a9747897c626442ed992587bfa1e10e4f9d3e87e68d. 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/NLPS41000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07db5160d1d4f9230244ccc7076406e7f97ebd916b0846247e8765c9d519ee9b. 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/NLAZ50700023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec601e26d492c06309a0299c94ece78d9aca25250f41cbb620c77fdb1ab33183. 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/NLAZ50700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96423dbb866d7590990b387d9d42107bb9b0a3b1498c2d587c803c436390ae52. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/NLAZ50700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cf8d156704e923a5a09f9e7bc01bec2ad88b5c98223d8ad514f94dfd013d19. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:18:52Z), 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/NLA250700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf014b39d44d91c7c91e840d7106d33ff0a96cd3e68c931d593e092412841f376. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/NLA250700036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9446c699f78c47c6328a04f7cb642380d538dfc19ccab37ef73fee0858f39f51. 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/NLA250700039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cb7f2a174c5990def9591d10beb42851e5f61a918e3259c40e2c27a3423966. 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/NLA250700041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeacb2490de3dcc28ba50e81abeedfa3ff04ee5e1a94efc09a21bcce0912de0b4. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/NLA250700043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371ccdb5edd5e5b2096e7967089b7c6ee016b817a1375ed03f652fddf136a7f6. 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/NLA250700047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58281b5ee7cfa959a211ff421aceb1ab7f4e5744d5073a65ba03f62a5d2a5bd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/NLAZ50800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c00cd53df5e57ff40b817aee27cd88a48afeb3d3d505fbfc637687eb47938a. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/NLAZ50800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfcb69ec54333f8eeac4d7468ba8eb5895101627bcb15f5b8e4b2c7bfef42a0. 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/NLPS41500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877633af8e275ee9692620717d748f65610a1177a961adeaeb4e396f474bac69. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/NLG931800340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13817c0c45fe64e0fd70696651dc1059f525b92eda4061f8ae7b59f3b3ed601e. 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/NL9318000281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0da0449fe290a4d59b1ca440ce585f5f6ebf2b52b44bd627bff74f547600785. 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/NLPS41900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a29c7bd67ed9fe5ec6966e99d9259722d40c34c94b7aaf6ed72b126ae88b78. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:20:15Z), 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/NLPS41900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386d846e6508fa82c6800b1a374e07878c9745bac13b11f6c25db4a83c009f52. 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/USL4Q2148497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5a013437cb50a4bba6fc128347e9f21de405d5c38c72bc7b0d6631339b2e2c. 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/USL4R2143061.
Ode Aan Maastricht (Kom Mit Miech Mit Nao Mestreech)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b129da70c9f2a4a5def3298422ac7c91d993369280d156aeceed229551b5a70. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/USL4Q2225852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe919bcab02b2cf7480dae62b8be684ebb6e7742d77bd36c8e0f4394f746cfb80. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USL4R2367066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61df2c829b0b3a8af80bae04598585fd96296c84132f40ae51086c9d0813e57f. 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/USCGH2406362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e65a6e9e61918639481dcf6847764bfc38478fc2deb08da8270e602cf95642. 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/USCGH2520539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a1410de3effdfa75e95aa33c9971ebfca00adb76c0e51906588b20a1d251dc. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:14:51Z), 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/USX9P2548372.
Rond & Rond (Hardstyle Mix) [Kroeg Versie]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434152e4153c39023f6d54c3ad2a5f1d2c43cb21a9c5fb8fdd6275583ff51385. 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/NLQG42400297.
Rond & Rond (Hardstyle Mix) [Limburgse Versie]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c74ca912a150144de9e13ec4765d379e539400a1272f80f30b97b1a8fadb8e8. 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/NLQG42400298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3345bef4dc23ad29083ca79072bf0f1752e31d37142c41e39c2b3d6f99e813. 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/NLQG42400292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f16958cd87c7c0d1f0a7341380edc4264e67a84be6a949b3bc423dc13d5263c. 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/NLQG41900218.