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 0x4362d8962b0e245c2629f881f83852bfa23307c88d316af8b72d20c8991c5b37. 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/03fe6a2e-ed24-4407-add4-043c07ae6f02.json and https://artists.proofprofile.net/proofs/artist/03fe6a2e-ed24-4407-add4-043c07ae6f02.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 0xc07ff5ceb17299d26eb50ad3c4d50dcb2ed7280f99719acc40862bea7c98992b. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QM42K1608438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2143c5a8a9881de58c1db549361afe348c39d877343d207be130c533dc2d80f. 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/QZ4JJ1662890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b68425804a939abe87b99f878795715f1a4f0af59458db22b92a1404d1a359. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZ4JJ1662891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf81c670b859f896dd7efe971164bb25835cee2e14293bfc90d51abc3d0463eb. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZ4JJ1662893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8a362f4bece09ce21af5120ce0198847a3c6060d5ad1a2577c793231103f02. 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/QZ4JJ1662894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf9b62e7e2a148394dac66326e3d4a2f4bc88d8a1fccb22efefa8f0ffba8947. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QM4DW1723910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae60facdc99f3824149d4f45979a5917149997c6dd4a97e370f2ee9fafba9cc. 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/QM4DW1723911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8102c651aa5e66fd36a2061b42ce6b35900fbf183b8d2c55f79025fc1db098. 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/QM4DW1723913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2431b5f171d686012b76ad9526ead9c2dc07897e3a62d19797c911496b16bb. 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/QM4DW1723914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1981e5baf0fa86cd6021272192601684fe9d94ab20840e45e30834d8ef9e2fd. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QM4DW1723915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d4813a4e8d5e9bb32d4615f11504acd64f179e3f3397b15f11135a603290a9. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QM4DW1723916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3e4e0fff26a4a6af900b57e1a5538fb00f1bc2eee59e3d100a087edfe9542b. 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/QM4DW1723919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6227630b67d681500986b75eaca6c053f2d5afc1b41ec13fcb850bc902944200. 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/QMPKX1786979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cbc9e50dca750d95c35bc7f68822cf83d58f20d68bf526b4b90674cd08a02d. 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/QZ8LD1754528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d3fe1c78c14b4856c134663db679d259bc5c9ba25d355af70048e0025ae3ce. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QZ8LD1754529.
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 0x9be15f74ebf3a7497cee5207e3dc1770432bb856db7fb5e416e6829a51554b40. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FRX201706510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a26a4b9dfa56946309590be34a55d04a82d0d4151c35619b2282e66108b89ff. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:54:03Z), 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/QZDA41818011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f615cbbc33c9c04180cb6d5f759a2b299dbe571e261adaa23be228b1ca4bc3. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZDA41818014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86c181580e89c34dc7a8fc1731d8122d222d4f9b7df8eee77dbf617b6b9bc14. 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/QZRP52283012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9deba331af0ad19ce8134884e2f4091f4ae9eb2a0e908a7a6897d2f11482f05. 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/QZRP52283013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97a6ae540910feb170f3d9fc0a8026afe217c0d49ba229463d00da8055dfe66. 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/QZRP52283017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48dc1c8db6c94e886f7a2255d49c6514ffaa9ec3e488d14c0a9a4b20892bf7dc. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZRP52283019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b9beb09d9a620fc8d1827c07aeb8acb529db6cb60e9d1dc9b88be4ff40a00b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZWFL2483343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa858aa683230a31474446526495a3b16730f63cade74b3747e44d2f200eea14d. 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/QZWFS2439961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef3445100a7f724eb83976756df0fb5c0eff5e8b7375567edbeb6a423912017. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/QZWFS2439963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5cdba08f60a1af9e22d88f249eafcdb4444d2d3c98a9e65cbedbdb036ebe80. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/SE5Q52500718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9050403b7a68075c79ca6cfcc3459f02b42b642c38e63e448d6ca48bffe4aba. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/SE5Q52501173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60758890781e8ef546f42e7c967e58e52a8808ccdaef0a9ad927a6de511d0b2a. 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/SE5Q52501495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1631b6d3af9344901ee3d668ca18c1d7a7a570c343aa6e355f99a73441f8dd. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/SE5Q52501861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2f851bbef301920fd2ca355c898f00731adf36a2bf4e47710cad328c01611b. 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/QZDA41818012.
Hanging Out, Playing Video Games, Writing Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a49c56a779f0902ebfb52bfab9d9c4bb1157f2fa8f6180ce0d585cf68da839. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DELJ81875819.