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 0x33b1ae4e7937aebe7d94014f178f606e1d4ca569c771b91c7487cdefc788963b. 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/7ac5090a-d431-4936-9533-5aba8d19ce4c.json and https://artists.proofprofile.net/proofs/artist/7ac5090a-d431-4936-9533-5aba8d19ce4c.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 0x040437f8742ddaf3b7c240fd2424bf552804ce37dadc949490f735be93b0345d. 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/CAGOO2112319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907f8c649ac831a00a17cabfefe110dcb93b7f2f2f309bc859e42de982357e7a. 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/CAGOO2112320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9f6efd3c814465aa8dc33f949d9b4b3ca2794dbc735681bab9f9592df56d57. 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/CAGOO2112318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c5087519308310dcc04b9fea52f7035753d0bfe92740b5719b0d95c4a0351b. 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/CAGOO2112321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001c49809c1e4a416febc13cdc71323984c2d0f676b549dc769ad7ec1abd19a2. 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/CAGOO2112322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119905d9431299b9fdf3106b00407ce863ef953b2fa97f0d7f51d10bcbda9f46. 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/CAGOO2112317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe08dac9ea02f94341a50f8f9dbec24240ce1fc386be3c7b30128143280c38dd. 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/CAGOO2113556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442b5f0a721046cc8e5a02bd446e4b4b7f9e73a1f6a27211c1d3ccbe4b801661. 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/CALVP2077815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be4fb79953be0a317db9c626e2b5c2df1338bb31996639a42f234b8a2de2f4c. 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/CALVP2077816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57bd9c3f12f7d45a17666082db14adcdf2c39ba4725f6bde63ec2b1c3dd5998. 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/CALVP2077819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f1d544ef4c7e41d31a3c06f8438edb1f911a734ab686a328c43255abef586d. 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/CALVP2077814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab47caaf456cf84b2671d7508cd8767a7b2ef2b7b6c5a3769b557b9b443b9e2b. 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/CALVP2077820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8201871d5947b7d64547ad3b1671209451256803786b837b7f6c1359efcfcfb9. 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/CALVP2077818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2d875f5fe9d35a3f6d8a4c1f47d818dff920cf0b5c14898b41016ce4d2288c. 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/CALVP2077822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1598d0eb487b56da5787a2ffa8e30719599d29d63137752405b0e25f16f4a8. 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/CALVP2077823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba949bfd535b0f2db80f84338c6e4760c8a20251ffee6b283ede2d8f822369d. 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/USCGH2062300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7964e2e99d4f781b530cd5f4e640f5d3716bdbdcfe56d0c07f05f16f22fedb41. 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/USCGH2062301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb72c095912e80ff8788aa03b54c20acb91f36a86d6fc52684bf591d5b3f2b45. 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/USCGH2062302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9e211e0fe16998b7baa2ef13c1a4a56fb6b7095bc0f03cfb35c1ce2363e8c1. 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/USCGH2062303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6839d0e92c9957f364a13ac0ac48c3710e783eeecf7e6f16dff1a6cf4967a0. 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/USCGH2062304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad549b17e38be58424b751a063d8eb2b060ec3d4f8242ab641f3aaadf08d999. 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/USCGH2062305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b95c36e0b28481a6364acf4b7d8ac1ff90c65b622180237ff0d5bf45c386e48. 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/USCGH2062306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9b1319fd7bd515466efa51024b6d67ebce5e51cf430c33e5549045fb0564f5. 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/USCGH2062307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26de2e2c8b427222391062e2e669bf71748b85e5b078598faa42172d693036c. 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/USCGH2062308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ec45f5669589e405eb1ba3b667362b52cec9fd14c78aa9e9b71f2671f60a43. 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/USCGH2062309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a9eb9cbb5676de0ae0ed75aac80ef90aa49a77a29d62839f8b1c7614a49342. 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/USCGH2062310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1644d820577cf5e5a636273c8a37e66973eef9b21311923908fbf8b80069fd. 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/CACWV2431258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e2998a664d8dc845f7a48f8b4b4fd08785721acda06160c54c43fac6dfbbb3. 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/CAGOO2319382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9762f1d6e749f3f69f019b346a6fb1ed739b7aa0f35e9b605642780bd1534dbe. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:53:02Z), 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/USL4R2334605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea49707341e1f86875f645158cfbb0dff0f476b7dae4ffc5a630e5dd7b48f9a. 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/CAGOO2221694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7603f98ef63a46ed7003e2cd61a4bb7f1c965fd748f0649ca0098bfe3b7479e1. 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/CACWV2018552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc254e6e0865485394573879591138ffea552a7825e41c1b3e4ea5b3e07950cd4. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/CALVP2081541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482b415e0d7177f882b7624d0e4ec953253a45474a5af2c37aadcdf64ea14922. 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/CALVP2081540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7de16c73352630924e3f202a90e9dad8cffcdeb06bd7ebee53316bd74e5be9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:27:14Z), 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/CALVP2081532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd352bcae8b896913822700a380d6e582573b7e95ccc6b9c51e5f24dc54443b30. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/CALVP2081533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15ad69421ddeba15d31bccbe10e8720de530542f045ac57aaffa2f3c01dcce3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:32:34Z), 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/CALVP2081531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212f85b90411b7185dbfad54267ff18f8531758d0e71886149a401eabefdbefe. 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/CALVP2081539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c149997f56d9ac8130d38da7e206fd780968ac478028f8933a5ffb2b811b9a2. 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/CALVP2081529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3565752778e471b8f0c3e229f9e8c69c9e1717b8424b82f2e870ca6e05c50375. 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/CALVP2081530.
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 0xad8f085d3da674a31e95cbf1f3fa8992bccb1ec1fcdc75d3f001f9e63753c01d. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/USL4R1947750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208f2d66e3d45a49d29680cfe3c687ab99143d7904c59b14aeca7147289097bb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:17:03Z), 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/USL4R1947751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8570796fc1f8d0f1ee8838b19c130d161682895c158bd85e6dec55a67fa6566a. 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/USL4R1947752.