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 0xb7807767e712739728dd14dd0630ea7d3c21b27d79c8135c05a390c9fed14d7d. 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/3fc72dda-bda2-4b22-83e0-90a8edbbf491.json and https://artists.proofprofile.net/proofs/artist/3fc72dda-bda2-4b22-83e0-90a8edbbf491.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 0xb62a12c92b722d45d92218b05e48647b0e08b20d521fd6d6311ba12e7d46155b. 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/QM99V2101108.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a85cb559a4bee98032b347e42619949873c4ade5dfda1d82a7feb012e332cb4. 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/QM99V2101110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e7e354bdc7aef5f03590bd4050bd544fb471fe401298718e0fb0dae8c94f38. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QZHN42025825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa50a113b55e1968f1652a0212267d9c5f36c908ec06fd1be5908c68e24f8c61. 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/QZHN42025826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dd7138506ba48a5a23fc7bbd661df6111d74a8fc7e80ca2bf17cb31b14d88f. 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/QZHN42014774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2579d543b413f2bd025e7d1d4c55cf740e88af6db09c778edd81f5520e2702a. 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/QZHN42025827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d829e9edc073aabd9ab01c6252b9c9c25251aa02b0fc74463968fbd50f5979. 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/QZHN42025828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b7d625a92ad00927b18937d5903e3ebd212daedd0699364aab91fa609de32a. 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/QZHN42025829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e16f6d4975f1840dbe4136cb4c5407a191455027638fcdfd7c1a817be168877. 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/QZHN42025830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec79faa000cf0b9740011ddfce4bb76b3431d4fd8dca67d3a780ea08863de04. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZHN42025831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d9d7193fb4b23936d1457e6b42b03540c503bd65e6d47f0a68fb17d6d7360a. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZHN42025832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b895748700acbafd7717809ac91f18f250bea477542f5c7dd7ebffc5fb1df7. 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/QZHN42025833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a6ade24aa65c0141c10744dda63e0ac3171f9c276627fb22aba304acdc436e. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZHN42025834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0896b0335cca5d431d6e24760834d1b49576d07c18b9ae1d8a4949488fcf63. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZHN42025835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde28ae69bc9bf930f6de5bb7c4b46c3919b3f3f9d9ec4dfd0ff1d6f8c7e5b70. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QM4DW1841761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880b894e2be4b1f771d4549708e9be52521529bfe96c94171f2e9c1a450ab7fa. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QM4DW1841762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59bfadcb801aef1faf224479278c82f8401adf4a2f802fcb0c5916e0b236028. 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/QM4DW1841763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa271cf69a3263b82fa8226784a8693c6cb2e70ec5fb68d58b398b0a02ffe9d60. 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/QM4DW1841764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba1b98e6c62ab974161552593c8842647a22963fcb830ccd90556b2b1a5d18c. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/QM4DW1841765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8f47b121601cca8cba61a090000966080672cefdd631d924c4f1ed140a2d2f. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QM4DW1841766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec8897726cb832d412f6ddc1ba32e379711de5c4f38d0e47d4eaa4c410c3c99. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/QM4DW1841767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37e36337e79078a8aeee0635d9a7e870e13995184137dea79772ab5ac4fd69f. 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/QM4DW1841768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b43cf4b89e3c24f5149b528200ab7e1d9cdf7389b77b402a1fd3279ec79399. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QM4DW1841769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a84a85cefe5f0a0e6b74c15c30e63d05409d6833b863717c6b53bdc0a7b439. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QM4DW1841770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e18b1b41d00d0d50d3b1d9a9a234188b383715742a836d3fee18e6f78c46a3. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZHN32113031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cb45b3aa35a4feb08fb9046313d3ab887df1c13464c2dc634befee82bebf48. 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/QZPLS2023153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d9d7193fb4b23936d1457e6b42b03540c503bd65e6d47f0a68fb17d6d7360a. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZHN42025832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dd7138506ba48a5a23fc7bbd661df6111d74a8fc7e80ca2bf17cb31b14d88f. 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/QZHN42014774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ecf3111f52da4a7eb8631da808943a9efcf4638b3b7c4f56cf9b213e387535. 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/QZDA62087110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34a0440afceaead65ba2dede5ae4ae8f6070d0a86d082898701fd0fe06c071b. 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/TCAEG1982193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd1f4b024dfa7b0e69c3e6bd21eb8dfed89f859be4461276a4f10e901411985. 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/QZFYX1907058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f6dbaddbf85416ea6a36f2aa69265261b6efc65183457ce0365c66b7e6cb9f. 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/QZ4JJ1970248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c7987ea33c438d5af15ccab8ac750199d128d14909c700e97831075d50eec7. 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/QZ4JJ1970249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe508216239c5858ac1de5f733d43c65093f1905e93ab40d3ee6358be3eacb55d. 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/QZ4JJ1970250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099b941820e860700db836decd76635efd4a2ff3880b8b5131ee6de4288b49d1. 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/QZ4JJ1970251.
Minneapolis Vs. St. Paul: This Time It's Personal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc45fe872a9bc1bb6b6cc00b434d918707150c1f4da884f7b9e8b9c3069a965d. 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/QZ4JJ1970252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97d0bb280b8248677cee5ad316eb6c4fa03fbbe845d2fad26a54993bfd08b5e. 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/GBSMU5895451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdf3866d0b955b3acaedabc77deb6ba98b27f395211664619dc0416ec935d25. 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/GBSMU5895452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa537980146b9129f7194d25f3dd026b235dfc9fe174007e6a0c830b19e9fb123. 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/GBSMU5895453.