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 0x4fe9a5b5ef840e8d9041ad333d3193d1a2e9edc425b051d731a3f09713c7598b. 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/79bba854-abdc-4d6b-954b-4a6b653641c9.json and https://artists.proofprofile.net/proofs/artist/79bba854-abdc-4d6b-954b-4a6b653641c9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Relaxing and Beautiful Zelda Music, Vol. 3
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 0xd19aef0deb896eccbd28dc6e109ee6328dac4680c710716aafe7acfc2d5ae6e1. 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/QZK6P2024956.
Dragon Roost Island (Wind Waker) [Remake]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b87f6add562ca65420383bdb318e81cb56ec21313c98dfb80b44cc7d6420b5f. 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/QZK6P2024957.
Kakariko Village (Ocarina of Time) [Remake]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabae63d159905fc3134dd0e7a24f3aa418e2e6609f19ed3665d682cbba76e221. 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/QZK6P2024958.
Clocktown Day 1 (Majora's Mask) [Remake]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e0bbf9f9b31d9b44f76b287deb4582bb30448a02b08a9ac2de5a94bfa52e24. 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/QZK6P2024959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c7283c1191257138855588f6dc5e949ecd41bff7d9f96e7b20f51e91004bd3. 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/QZK6P2024960.
Kaepora Gaebora (Ocarina of Time) [Remake]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6723b0b695b4423ff0272202bde278443f4cad880ff7332661f4aaa8f331f785. 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/QZK6P2024961.
Mabe Village (Link's Awakening) [Remake]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8437f932ba4b668f57d83f6152a49cf8566749144b5bdd4cbf64cd853d7ff4bc. 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/QZK6P2024962.
Ordon Village (Twilight Princess) [Remake]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a76cdc012c7b81049c94db9f56418652741e646db70e1e29b872f26f0718672. 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/QZK6P2024963.
Hyrule Market (Ocarina of Time) [Remake]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb2e28b1cc46c2a1f756ce61a927b8edaf58f77571c519cbc26679580f40f8b. 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/QZK6P2024964.
Castle Courtyard (Ocarina of Time) [Remake]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a02400138982cfe3bd3eddb459e7d8d729baaeb38ef5d684ae6ba6baf6a866f. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZK6P2024965.
Zelda's Theme (Ocarina of Time) [Remake]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1331f9ff88e21b6f1936998c5c2d292d05dd0e3bb375c495f08a8218a5c93d. 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/QZK6P2024966.
Relaxing and Beautiful Zelda Music, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289bea63a3115d452a484171064906c559a4b864559cfd47c6ce9a7591941a4d. 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/QZFZ31930722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50832fe378c850b34ee6a2bfb8c782a27de544342b9e0e74eaf8ef0f2db2e080. 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/QZFZ31930723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6283bb89467bc7038919ac8e53c4be3d73fa86e5378da469fb24d2b3ee6b435. 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/QZFZ31930724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006b2502db14b7f7c3ef3a1f7b171a4f01ad45c7b04321beafe35059312b8e36. 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/QZFZ31930725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70daa1ffe5b5d19dc735053c59a29db527ce2e4489b136ee1e7748d6187b2ac4. 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/QZFZ31930726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d9b03cc836856d4944c52f2609e2c3600d94e3b945e19f14185f47cae3e183. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZFZ31930727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a091558861f60776824e993714c31ec138ff4b1ed31dc1253486a7da326deea. 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/QZFZ31930728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7471c414af2cf7ff5d40983131ee9b62df6e1b9c0ded042fc48ae92b9f7b2ca0. 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/QZFZ31930729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22e48ae1f4b095753e5b54e63e5bb8c21ab54d14e0b63267d7d38b2d39f121a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZFZ31930730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5454b62981b076ed5327b96e8a5663008f87ee3fd36b01ae0065d44c19a3e7. 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/QZFZ31930731.
Relaxing and Beautiful Zelda Music, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc94ca7a92a7f01c09c0eb786c7d63ea8d16ba9d85f5e568a97871e640f9172. 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/QZDA61837043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba42a82801d7d8037079c8d401f1bb8cae40e5ae0bf3416b4f9829e313a9f3b4. 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/QZDA61837044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe669143d70feca1304417f4b86a92dc4fb86ac12655777edb7d5f4cb04adc5f1. 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/QZDA61837045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2fdd52cec2a5f77d694e67d1cead8381f16aa3ac2cc09a492ec3dd48694ab6. 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/QZDA61837046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc290eaaa1cfa407b443e5475b40efae7784d6026a8b2f855791c54a3c9d1461a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZDA61837047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c1f0a4f489400175a90b1ff30c464bdf0414863cb1bcdd2d99e4debea7116a. 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/QZDA61837048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4065391b349a0dda15381731437e5d97bc848705265c8c3f464b6a2212fb53bc. 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/QZDA61837049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3c22c3761bc643ea9239050e6f173dace4a9b9e6edc380e5ada5f268ba474c. 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/QZDA61837050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31555f3903fec49e27a0b6cded041b6dbb41dd6509761a2b9fa7994027a8180. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZDA61837051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c4dc3440635c879b3a0d04b1f23eec1c9c3846a9b46f052df208639141fd66. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GBLFP2578799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478dbf997b58b9de3d28fc8405730fb62606e2af2ae5db1f3f9a8f8fe99f5b39. 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/GBLFP2546251.
Stitcher's Sorrow (Sea of Thieves) [Remake]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a272973458b85174e2d7820187340a677cdacc62466db29d2ee61d362d5de1. 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/QZK6P2024455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacaf454afcc14078d9b1d304d372b45e4020474f0221cd54cb0174b62282d851. 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/QZFZ31930721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d6b23072146aa8273af5d0b2698cc501dd8d67a671cca1447b4934ad987bd7. 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/QZFZ31929851.
Summon the Megalodon (Sea of Thieves Remake)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8db758e533ffb436617b4b313e695847c975eb09a5447d8588c62505b49869. 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/QZDA61822730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22cc9fa0f6fdc194d2f402d8fa4b6e09f14797d101f3c426f1b3b86b63a33a5. 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/QZDA61821113.