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 0xfe314a13cd5840cccd1f05a7bdcddbae4702227ea75ab8e703c5e12a4f27902e. 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/5d067fb9-fd67-463b-b006-67651378b408.json and https://artists.proofprofile.net/proofs/artist/5d067fb9-fd67-463b-b006-67651378b408.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 0xd81b27a93ca738ff4d6f33379af149e46f07c76d42f5c9d1f00c857f17964439. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T01:04:01Z), 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/TR0511002455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51ec8357f45d40ea83b85f3d53f0ebf1887105266c2c113af6bdc1436c2bd1f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:48:59Z), 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/TR0511002456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33694497f26d80438e7cc8778324930a0992522eeb6ca1d03b2ee022a346a9a. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TR0511002458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b03b067a659af85e71b4e1056f61dd0c13d1a53563750663f6c9838fa5b9e1. 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/TR0511002463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31000ff9ed0669e0f31fb80283fe1a7dd7a92d30d13e48f13f03f73265238e0c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TR0511002464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9ca19d60af35f49bc3b579017e7580ac11b9848f60b6bbbe48ea6f992e1ebe. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TR0511603950.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fff2bcc2cd52db73355c74d917ae779122eea07fe0124b3c473ed0b7042ba3. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/FR10S1956336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5637450a22b046e51f3563148b7c793c41b1a3fac6b257fb1c896a8bfa3d5993. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:43:42Z), 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/FR10S1956338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0a66157537a9a42d787fc965e2af62ec7964440953d60c0a0587b549548fbc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR59R1952098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406c4794a567cafbb59f00d2aaa2f4cc59f8337f50a459f37715c5f8a00c3b1e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR59R1952099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630d10f473e6cbec329cec992e2a014967b58f14e781924058e2b3525d1c5b89. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FR10S2019416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632accc7917dafc14ab73c0012c62963f8506034ddaa633757b10dd659f2d27a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR2X42055233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a902a1e172074f9b98aebbba9e3ae5680d97362eb41ebc2f99ca7744a86fe98. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/FRS182082951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72921294bf35725c88b85d31118b880a99b30f7a0278d80c690bcff4e38850a. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/FR59R2113667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a4511682cef91fc4ff0af6a28bb5e72945256dcfadbd343d8ea872fd043117. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR59R2113668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cc7018a3f61edc036f84e9d6a1839262ef6867e209af4b2fc3260b8efb68a2. 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/FR59R2113669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67635c07c51eccfe29eae1a115140dd26536fba42cafc4bd4e346c8f9c4fea22. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FR59R2113672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63525f09f0d91b93739caa35400cf0aa44cb2a93876ddbc228ec6fadb8da4413. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:24:54Z), 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/FRX282159729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e5e8d64f84a8fa58f31fc61a4f1730966d03d3152c0a2fc7bc6f5855f576cf. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/FRX202329408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b66aa45e763b386d044e681a8fc9c81bfc6db67360f0907e426dae40b0e23d2. 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/DGA062333907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7625f16ee9cad47f848827cff43204becc9c126e82c457c9c6e21852f5772f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DGA062333906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb386f1f827bb317e96836749af822762dbb8312cf7c0eb5177ad76d85260037a. 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/FRX452467229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2c22600aab8ef0f78a93601e97d134d1b3c02821a156173fa3d666025418ae. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DGA062489621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ffdced23279962b33899ce2b19c3b764698b24087fbe34e18b53b80260ae0a. 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/DGA0Q2413609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b1a4ad48ad72f34c693109480e77046e5df4acd046a7b613c3be6969d3b539. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DGA0Q2430292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f44606a88d972e922e999cc61fb7a70c457d35b6b853a22cd374352f6b779c. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DGA0R2499121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa234b50a65290dc04416b604c64fd4a5cf6e6c196ca24c09822e83e533f5c3dd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DGA0R2499124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522f34273ddc6169df2f84bf99e117695096a96e6949c14a3feed141c6343323. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:48:47Z), 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/DGA0R2499129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a94cf77b5b7b8b0636ecd8299fb4e627a224c75be3b0e5f1767a587f1fc148d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DGA0R2499134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc897e694c42f15a76a19ed90b13ad5b30ba45446d822b592f2adfb35f7662e42. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/FRX762592484.