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 0x005e0bd8c51b6117f3816f23432217afae70828e352f89d75be4b026b5328e33. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5b5ba7e3-0f53-49a5-9571-181781c81d66.json and https://artists.proofprofile.net/proofs/artist/5b5ba7e3-0f53-49a5-9571-181781c81d66.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 0x0b9c4bee150dfb8068ab0945ac0e63d9de39ed045d2f45a8962ec9e7df2e281c. 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/QM6MZ2287986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6efb06c81623eb1103ff02d1bb71b73ea92e54e35a76e93ccd705a1e536c4f. 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/QM6MZ2288043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0ea2fd42d3e486d64d1fc0eadf11cf3dd3def7ce3a3adeb37ed8470ac50014. 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/QZFZ71917886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bcb554113df907a467416181340615de610af4052f8c508c2ce35ec4e2a935. 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/QZTAT2177483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67741b75086cd943a8eebe3ed412f04c30e6cae33e2029a116a479ca46f1c5f5. 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/QZES71925720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0ac2c17bc6c1478cc2e0c61c564d9c4a19aed524f26851917d957ce9670089. 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/QM6N22223008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108eb01ad40ff6a20297ac33effcab5f32d830429dc5b004373236cbb43deed9. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QM6MZ2288074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbe63bde0d4d194169699a9e715eb6f1730ffbb28651963e5a23848408b9242. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/QM6MZ2288072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed894578405ba32a06b48d0f23fa9a25eab98cb2ac44f5fc40f6329a4adf90fd. 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/USHTA1900557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a769bfd2d918035381f94b407c431e800f902b02f83deca2df0c2dbf0ff3cae. 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/USHTA1900567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d67b3d560ed223ea7781a731f01b7e874907ca7eb900d9acff194012bf7df8. 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/USA2B2402079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd3fb4c58abf7e8bb50f17824895e03784c0bc61ae4da1000dff20ca63d4872. 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/USA2B2402081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb76fe3e939c8a943044c8791ae6ff0aab858d56316ff69711f5ef7aea671b6. 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/USA2B2402082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bca8b301b76f5965de0e1881d0355e3214b2f9581da11d9414bc3f9a132c65. 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/USA2B2402087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5a0133098e7001ffc5a16d23a7e663badedd7e4d544f0e0a749284b23649f3. 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/USA2B2402088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aed8bb3a24d292c6fef8e91db3fb1f7ba005d86e18e881bce7edcf36ee42b80. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USA2B2402092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e040a5e96b56a18772ff68fa93f38ba3743ea7778c322dca4823fa2c7ff11e0. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZBRF1827116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0015da6781805ed9de81ca5af2faf9d1c7a2aa5b30a6427e60b2535ad918bdc. 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/QZBRF1827117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485760c52d00e00f282e67c3ed26275a3aa3e56f84dc1d5f43759ed827439a30. 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/QZBRF1827118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2a152421eff052f396aa9c42bb495248ec4e1c7e1b6852e433955b3d0dce12. 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/QZBRF1827120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bc1825e801b9812239faf73ea949b0ce88af2e38721af8d087a1dfef4101da. 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/QZBRF1827122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec44eb659fa0faf5e239b4e1510ac98a344b7f6803ad479bea76cf11e90d0ec. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZBRF1827119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95eaf45236669cf853958b8de7c0115f46a77d719d0d462465d635d9861944a6. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QZBRF1827121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bb7124186c7cb6e464e242b3ae8c1f446c744f69311c7801fe8190dc445ba2. 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/QZWV92300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec4e8b9ce6039b9d7aba907463f9fd14dd6b193b06773003b20a6071beed25a. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QZWV92300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bf2b026fccd0ab2cb6d66b793f853e3315ae9794f5814f3a3f7214ba4cbf87. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QM24S2400147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cad876ab7653bd5e82c49ae3422b21a8331cab294e4e688e8923c2556d0883c. 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/QZWV92300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1129d6c0ba7e08f3aaa780df61febd9a37def5c18a2290cbb737b266ab40919. 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/QM4DW1783134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb8a60d573f79c2ee1fec58804bee6aeafaa98aa7e9d0eeab13a271b93d1774. 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/UST8K1678835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7f6afff938461bec4e1dc4644d723d79be9beddfddeb9e458c87220fd48db5. 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/UST8K1678837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2a3a31d0364cc1930ae0a9584aa1a3e063f0c6630239754c16ec33be1ed377. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/UST8K1678834.
A Tribute to Blink-182, Pt. 2: Fund Music, Fight Cancer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ea46302eb27c59f7184d8b1fe38df3f9bd9b69d058a7ef24f0a5f209d1d3b5. 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/USHTA2400694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02347f21073ccb1a0ad4367e2588f700fa298ba06d4a549e118d1bb5212d6be9. 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/USHTA2400695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac72d94069c35c8f1858b07004abd05ef300088079a4751cfb9538a7317ab312. 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/USHTA2400696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983b6a5d57c9a490519fb6b065a10d6cd7b7c794bfae637845c08806500c5fc3. 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/USHTA2400701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc387937eff3547604e461353f669a7cc80bc60b6c2e08b0e8e3f0b9e2c2f2617. 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/USHTA2400702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733a39693ee4de8ad147af14cd86f52a2d2062eb93b426f9c767be07bcd203ea. 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/USHTA2400713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6beeaec50d38a8474b2787698094bbe999260437cdac79a4bc9aadfe104b307. 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/USHTA2400714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa943e50df2efdc4b82a0372e3f85cdd62acdb0c90a0a3345ca049872c7d719dd. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USHTA2400693.