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 0x177b8a2cf2ca06f86d55b9d2cc189b92f09321deed313a42a5ad6b3ec40a51a8. 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/badad932-c28b-49f3-8996-5071ef4e8263.json and https://artists.proofprofile.net/proofs/artist/badad932-c28b-49f3-8996-5071ef4e8263.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 0x5a15d8bcf702b98d1d9b277dfacab6add3f23e3dd8f0317e56cacba770ec1a3e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BRUSA1900493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804473bc48935d0444e0af1cfc460b900f99470497a878e5e6c1de15ccb6a94c. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/BRUSA1900495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7dad1560a132e39f4f04ed4abf1f1cb35344175f75187cebe87dbd83bccfcd. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BRUSA1900496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fc5ecae59a09268e53e81809c8b43a03782c941b48f8796534ececdfc7aed0. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:57:49Z), 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/BRUSA1900498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca52b4633a4a91755138a255c1d4a00aa920f1b96bc43b11ec14e35f0bdf5852. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:09:22Z), 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/BRUSA1900500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f8961eba0f53deb663086e91d19c57c4d290b14b84b69dfaad4f9fef2f6560. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BRVR11400116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeea8239553382edeb89a6da0a8db824874b93fd779c5229469b20d41a121974. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BRVR11400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27279635855c5f9e000cebb5573a497e33119cd62b0a1f60cfc84d1b1f8fe2a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BRVR11400118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ea543276ff013dfd8e635e6da2ed1a8515dfe3010412ef8a114d29c5c5c5d6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BRVR11400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfc9ab0b39432194cad9120e73dad499c0b46fbf5b1578d4f671ab0a4ace76d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BRVR11400122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6d91a1037c6392f4faab2bd450657ce12277c9104b2479112bd88c6b2f3a0c. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T05:02:13Z), 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/QMDA71548356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1887d0020064ebef2db5454d52acb2a2042f16ec2aa14ebc9be263ca127f8793. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMDA71548359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef721d1333f653ee4ff751509f9baa785277c3fbbe116b00a543bf339379a690. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMDA71548362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad54854a1d75a8e84b42def6462c3a43331e4005df05cb5cf3621620c68a01cc. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QMDA71557884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7582700c9b0c7667227c9ed9d018adbd52653d474f221b72a0578184c8925f. 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/BX3662000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8223da99657cf703b8b09824818fe271cd5f1b3af17b12c5b0d02d48e01e793a. 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/BX3662000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98947df7bdc259564697dcd9f2a33300dc4014270c6e148e2a4ce7269020c6ac. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/BX3662000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5c4ee0d555b3839e0d0689c9b04b176363bac7169f2510893798f3eec2b4ab. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:18:06Z), 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/BX3662000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6812a0b94d5bf084606b7a4cdc9251edd1360c704c7a58ed920a825977a5a96. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BX3662000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38c3b3228f91fa9883f3b9347bd1ff01b77b63467326c052dc9d813ea4badc7. 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/BX3662000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0531535b3aa919407420683d9df75eafd737dc4e5cac7704674d13288582307a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BX3662000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aabda0fe2859c3c96e63edc14f5e8a0d60f2de8cc3c643409ba8cb5751f0689. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/BX3662000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6812a0b94d5bf084606b7a4cdc9251edd1360c704c7a58ed920a825977a5a96. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BX3662000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9adf5027594ff8cba2cfdb6cabd24106ca6f4586aee7f27f39237648a7428b9b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BX3662100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abc698a229de50642da6dad905785bc27368cc9bd618e2ac5c4b7392fb4f7a2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BX3662000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabacabcce238cc0b7cd2920c8f27edbcccecb8fc5af9b8a429b714384b831d26. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/BX3662000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4662b070c52a79640e74a6d5e0badd3c492097932e295e2607b7c386ad7cfbf. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/BX3662000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81300d0a590059bf39e5dd3f4f4b585de3cb603287737951984e156863e5f7cb. 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/BX3662000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab563d027515ea5db2346bac1955de16c7769c512d3956b69773d7b01bef158. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BX3662000014.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89306a99e89bc6e530a9b34c9cbc693722cccf402434bbe57c1d872b28c358c9. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:38:54Z), 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/BRVR11400687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89be76becba859ea65829c6c12ed2d8c00c138a723e3403bbf6e2ac8ba43c67. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:10:15Z), 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/BRVR11400679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1887d0020064ebef2db5454d52acb2a2042f16ec2aa14ebc9be263ca127f8793. 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/QMDA71548359.