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 0x610ab34001fef9975e7b941babf4aeff79d6c1ffefa7faca634f92c31a07672b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5bb7633d-56f7-4d9e-bf6e-85ee22a28bde.json and https://artists.proofprofile.net/proofs/artist/5bb7633d-56f7-4d9e-bf6e-85ee22a28bde.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 0xec81fc72e0d26a8d7237803ddc1147b28dd7d59c4cca71ce95a7597b6a8274f2. 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/QZTV32223123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330ecd1dd5dafef9c0735fddb72c3957244f9859309aa7c347a1320449fa7f6c. 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/QZTV32294703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4f2666b2a45e0bf743972de71a92432c88d37aa4bba35e5be5ec44b0780435. 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/QZTV32231369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ec75d54691f47d2e103ea947f31dacdc76db19ac522ce2821aafe157ab3a14. 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/GBWUL2292110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d28973c16c0a4e83bf490c5066688cc32288cd87fea727555aa3e2afe041af. 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/GBWUL2228862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95922959e13c528f69544766945dadbdb47db74b0e7a0e3a232728ce7b8d02d. 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/GBWUL2211179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38055319a8fcd215615a72babfaf18a3ab9b6ec4036a436052538eb703f2f48a. 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/GBRKQ2260053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0485fc9f9eb810a0d5462fb2ff6377cbcbab5f6a5b0d9c88bf94a0b3d66f5107. 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/USLZJ2206558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d31bca59edb0a602bf8c20b258ed0f66dad474f4b6c3080c62f52619d5b128. 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/GBRKQ2222136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf820be5d4da5239e3159c57bcfeabed7ac467f1bb1286fee550230e7b5cb742. 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/GBWUL2162001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f90860f728be1f3ba3c4cbb5146be2cc37de17a21309f5a64f17eb2b62dc824. 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/TCAFH2024107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369dc1ae2f8fdf468bc20132ad1a3bc871a69348786eabcdbb67538008054945. 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/TCAFT2143246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b194956e46c137db62d59b8fce1d2a4e0d94667c3d3b868d5790bbbfc2646cb. 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/QZ5FN2444540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b93fa09f248a8d776f0c54e7d022256e275f3ee2d79b2f543484d711216002f. 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/QZ5FN2444542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17dfdd1349b21b5033babebadd1368848ab371eab152cb6c1c7e9e051698c562. 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/QZ5FN2444548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5beaa0297c4aeda9fb2faf8cadee7457a5269757bb2dfa5b71dc2bb9fafffb59. 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/QZ5FN2444556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78db974550dec443e8e04bc1cd581e16bdb656c94a239ca72be719d4d156f97. 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/QZ5FN2444563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4466b3f1f49446b74003658babd3ef030d78fbac5b1ad33929a0c3a9fb8491a. 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/QZWDD2332084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4b2dffaa684ebfe87a70658961d590557d43a743ee7843aef4988ee9af3bee. 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/QZTV32201079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3511892e7b08daa8b004ca1179e17a8584919d1dbc1c4d7df156e631e131fb7. 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/SE6QE2494736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4466b3f1f49446b74003658babd3ef030d78fbac5b1ad33929a0c3a9fb8491a. 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/QZWDD2332084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89095230112be8947d4a7e06cd247e9ba337bde3b47f37ffd610c98c6bb75dde. 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/SE6I32462867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf795803c8578d50a0a433970b85d5a8c86924cba405518a8a9b73b80e13e8c16. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCAFI2189598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49f9535928c51ae14ffb089c2c36c1d326a3cd244e588575b85b239c2f37dcb. 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/TCAFI2189611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bde80b5cd6033783e1db86efbef3f8203d51927cfd6d4808428de636c40dab8. 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/TCAFI2189635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0088f5771088004f3c9acd859de7cfe40e6c8f730d7f2df0573c6d576e4453fc. 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/SE6XY2559309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a0f6276b0733ee58cfc5dd2fcd21c41cb950c2d5a9381543842563bc615628. 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/SE5BU2537256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3871b364a9f43bdf64cbaa792b221941a7f39a545a552b63d6e4f6d43e734c. 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/QZTRX2302407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76ca4c4e7cac26fe8244789e0cc0cdec1c35354a7d9575b40903e99f86908eb. 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/USLZJ2270933.
Frontin feat. Niko Eme, Temperamento, Wolandia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169754df4e2501e361d9bf330c0b82be7a7f0113f011e142c93b192076d439ed. 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/QZ2J21505287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9078277202b0abc639bb27504d8b622a4e12cce5bb8f2f60f76af8a0b35cf070. 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/QZS7J2180233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99610849e2c8b6e6216e216964e676be3fbca1ff327b559625cf857b76c1a6eb. 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/QZFYX1925016.