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 0xec5e541d9f7e479c9d0044b6182ef5d40729cb3a11a39d4a77942c90ff684576. 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/4da1fe21-3fbe-4a83-8d2a-4c42438d3960.json and https://artists.proofprofile.net/proofs/artist/4da1fe21-3fbe-4a83-8d2a-4c42438d3960.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 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 0xe18a505233927ae13ce82eb556612b1dc0a896ce596c57af32260ff9cccaeb58. 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/HKG732126947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c0c8552eebdeedcb82b377a48a2b387f7bd91bfe676c688db8a6d35c5f2ab8. 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/HKG732271781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1268b95c3ace488814d63556408c5b80f70c3d88ce00acaf7fa5534265a7255. 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/HKG731779562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a62dcf50fe817ec6a16332aafbcf98b92580ba429cec6a7c24931259046429c. 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/HKG731779563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9e31357f0efbe35ea9eb42cfd8b2e796a5035f4988c83aed1b7f394b5cc943. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/HKG732122349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3dc60f9758858beb0ff4fc13cc738a29374dc44c45e8839cf1d7faeeaf5f34. 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/HKG732157334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11b30a048245059a54ef7c7a2f3d94f1ece77a43580370dd867c8c14f4e3984. 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/HKG731861805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21af2f1b681151cf783e8e1625f17474de68411f207e0b9c5ad63e1f6b015c36. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DGA082393346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc4aad64752e33b9642703d9a1ce3046b04533ff092273e727f326376e1b8c0. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/DGA092327678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf722600f95d117941953e714d9416f72a1dce07531f684b675d50247fde57fa6. 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/HKG732148613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad5612a079d131e245e2ebdb3b18999643dfb28844dd48c77db37ad8470bed3. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DGA0L2317883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9988d6a661bb9c37c76442a836e02582d544324ac789b83734296a3f911c6a3. 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/DGA082350191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87902d8b6d01a7836bdfb5df2f85acc2e1079420764e56a15d00cebd0166e8a5. 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/HKG731751406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb61ccf9b01030c132c3a360f9c6bf237ba6e38876ff765aa4525c6225cfeee. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/HKG732248364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c08a1a8b68418f52a9b055e87d5618ad88ae3595d9164fd33e23e4d0adcb6ff. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HKG731734139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf69bb8a90dbef0266d3e42d47fc10d4d476c5ca502873527fc5c2e9a97b107. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/DGA082310827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93275887491ac7c6abf72436339009f1bab93d1f64cc0f5c1ba4536846dbcad8. 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/HKG732225225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9432b00b23a98a280976856a335b018aac49aa253af99a192e2571d9d07c5ff2. 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/DGA0L2365675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104eec691ac5eded1e8e8a87409e32315e38a94df669e52142200071fa893f7c. 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/HKG732248370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c01f505c30932bfc401e31960c720b8869dfce7f8c298a877d1e26ead0276e4. 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/HKG732248371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52f2811da4a85fba512b065826431fb9ee3345595d5fd7070b1bf4aed90be46. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/HKG732128830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7011eab4e790ac8af33aec94570b2dd10fe71c3e942078a643cd3ca662fad30. 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/HKG732128834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffacc80ae81415836a3e319642b045e49313eaff207265e2b74f3f395e28111. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DGA0S2482005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667951ee6ad6d784097c185bea684aaec447bf352c502b77cef4d4e736ffbaba. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DGA0H2389069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f53bc8b82072b69222c4bc02d35fe16e116f3ef4c0892214dd4b419867e993. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DGA0L2324469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7dc503f8a773d1f8ea015ad4c1829767e8fbb2f744b142778271122cfb60a6. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DGA0H2359075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9723fa4321328fe05913efd4aa1cfd8914eca4f56a128f8321f95491f25dac03. 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/DGA0H2315661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7121db45461c4b20b3971ffcf26dd6d940fd68709844dff72e625c41c134cec. 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/DGA0M2332020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc646c6d326a48076cbc7e6f66a3f944eb76c085753c78cc05528348f8b342051. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DGA092324931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a478f23719308f5638cb80820eded293f28c06790a018d24cbccab2679fe61. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/DGA062317077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaceed3e7cc9a80eb13e9d8a47c68be1e18ad98a9a562850b995eeef04b9e0700. 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/QZXLZ2369544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d38d7fe393c0ca587dbeca5483e599be13da073a84e855c442900bb3b433e2. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/HKG732271823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138acc575395e59674076cab15a819e8c29a4327d5dbb0f75a4aa4a4b5a1c39f. 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/HKG732271811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1830d638003660ca2c73aa7a9fc52e9859b28c3c56cea45f888b7afb045f0918. 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/HKG732266652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6b5a106b784671cbae3628e6b451c7d11d946e2bcc6f18f29a86db8fd55f6b. 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/QZXLZ2322037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f338a18eac0113c1036534950bcb0fe0e7bba9a0adea49f0b62d6a2e62bab5. 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/HKG732232208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788ff581ea0e9b179b26dfb8bf1c3ef08d4542b8c46d09c087af53db0727a98f. 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/HKG732232195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f70ea8d21f7a97e28610739891682883815adeabed51cab610e11ebeb54dba. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/HKG732228612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5760f9839ebf51e34f28a0c72b1b1b88f34ba491ed9e28a4c61ffdf3ffd873cd. 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/HKG731789534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15141145941acf968c6ba10841d68df0ed45ef75cc2923526d71a99aeb58fc61. 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/HKG731766570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1188a1c582e48144c440cf8e2be624ed1daf441c04073ca5ad621914de2a208f. 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/HKG732105759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecc0539444dbcc320ff3fe09f7514a7858e9e7663323053a74ff484607e2461. 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/HKG732122306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5576b75d9520f5673a5c7da5d124cf48ac36549de9bd03c2f5e1e2af1ecfce53. 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/HKG732149320.