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 0xc51319808d41839b86984cce02ea4cd6a58d2594f87be1e05d9d06208cf46935. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bab7a7a2-847a-4f7c-8636-926268fe940b.json and https://artists.proofprofile.net/proofs/artist/bab7a7a2-847a-4f7c-8636-926268fe940b.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 0xb1fcd6d6d6f7d14a5d1ce909b1b5b090a056d79d94405f15ab0c9d58c8a12603. 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/QMFMF2226117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8387113973768f24faf3348cf060f3e7cd30a2a8fa02907ff4496c321d6e5b31. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:31:51Z), 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/DEZC62292278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ac7926506e4e24ef9026a691558b87bb43a9a520dcd8177c7bc4bb4d122d3c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:34:10Z), 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/DGA0L2483570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f014935b44da6b0fac43351da0cba9b82b47b4f78c44fa6197d1825637b39e. 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/DGA0L2483568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e7b2b0e894a037624e8e60e68ecdd18a11e79d8ae6e4627527283e15b7c9f6. 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/DGA0L2483566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc344195eb7ee05179a3964e0b7c17e2ff274a2f7a3ef58d33726c9ebd3ab0d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEZC62292277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e054eae95f3bcd87db285120200150dcb04c6361a9c7415edb21b7457c20992. 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/DEZC62292275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a824cc632331ba6aba8e94f6494e138cb43e46064bceec3a4be639c69127de6. 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/QZLRC2222176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e1f7e59913fb4bb6adb107364299d2cb12f878ebe1df065c7bfb143d966fe3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZLRC2222185.
angels watching over you (lofi ambient mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2602575b54278fd2ac233deddb17b4886fa38353598558dd475be68d0bfc77da. 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/QZLRC2222186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a4a4f902a7a68f651ac35bd55159da78dc631a383a296098cf0e22faea5d3a. 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/QZLRC2222194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50ab5a31605312fd20260abf9c7e7bfac0a52677c7e4cf5fd6b6b27ddd553b0. 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/QZLRC2222195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0e0371f07e8f5ed06ea2dfa78a486262b538f1cbdc1beb61117657cf5f6b67. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZLRC2222203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28aceda3872ec5635cc68865fe17693ed085ce64e3fcccd050271e98b40dbcea. 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/QZLRC2222211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d66245a98c689092628440a6a2f613c7dc22f306afccd5c88dc90ff5c15824. 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/QZLRC2222212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ae315948802daca9fa42b8bd1eab9d86792e1249a4ddbcc65839cc3c2da8ac. 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/QZLRC2222219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6184b51542fed2f282271986ecbd6a3cdd17d4f335c6ccbe22bc32ff3b9558. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZLRC2222220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee63f4e5bdd7a231e595fa2de6960d549f91100b3ca7d5c4d07ba4f2b9c53d6. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZLRC2222228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cd4422cff01abf3b45e85e323332d2949cdff9e5bfd2e58e5c36e59b211c6f. 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/QZLRC2222234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5672f84ed8503f2f794b5a5bbeaaefd14e9256750f84d079b6ac052564108a9. 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/QZLRC2222246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38308085f4bce66fe10813ef4cf09373c646a0676393efa00acbfd0d6abef521. 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/QZLRC2222247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ffce851fc7fbf2c1cf20ac740b51d275e9ac53de37c68adc5ddd7dc53a25c8. 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/QZLRC2222254.
summer night lullabies (lofi ambient mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c643a9f51f20c99d72972a0cdbe80b91d5620ba81a367169975d6933b26dd4. 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/QZLRC2222263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b6007a25fa4f08b638c1e1ba19c9455709f2f9eba4560a011c78a4edb815b9. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZLRC2222269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f8f6c721af04ebfee973e406a917da6b625257d35e1ed8ccdb98b251d7080d. 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/QZLRC2222270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16d3d6340e7a43e4a6fc36c1926dbdc67598005fbd17d03c6c58ca0d42182de. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZLRC2222276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac4555b5f33da4e76f4b5ec4da1274f49ce068f072ed698042f45bcacdc0a96. 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/QZLRC2222277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd850d4acd5026c9e2e1d7cd805ca80ddbdd329620db7ddfcc3ebc47d8f5f6479. 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/QZLRC2222284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f540a19230a5211f912427765ac6e654a09d73f2021999cb986dff488a5d7a. 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/QZLRC2222302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54cd90bbecf759ff5ccbe078fccb9fdea8ec01eafbafdaa3420c50544be1d1cf. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:04:54Z), 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/QZLRC2222240.
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 0xc9d08fcb8f6189befe744c41c5cb24fa6810533bd5afc604eff395a0547ef515. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZLRC2222241.