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 0xe8fccc6d196fe0d4c7cde087bb8b5fab3c42fde0122bad3e03b4cd8f529aa8af. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d023ebd0-31b4-4269-8da7-5e9077488772.json and https://artists.proofprofile.net/proofs/artist/d023ebd0-31b4-4269-8da7-5e9077488772.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 0x26b616eafc7c3786b52e799070b792d44a5b1639259ac04de6d8d17c15c546de. 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/SE43Y2200901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbae22c4874462bbf5d3135b731d7e621da7f5b262cee3af33fb9aa4336a6c96. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE5752466513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0923e5e86b7570b600a632e3d1a2e919b6bbaf016dff72aad89a9ad35840b22. 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/GBMJG1804501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffac24ae2ee3963d32b6c4fb988443426102fa9044005c729ec5b47ea9f390b9. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-21T16:42:03Z), 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/SE59D2303901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2d357a3b648010ec19b1777eadf06d75b640309a40808453a23489a0b83994. 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/SE6XY2149784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb18dbd7be3f14b2dbcafd7f6c5673320804ab21415b6cb7805496baef6ccd9. 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/SE6I32155879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91649c203825948d265ca05984adfd117f20d6d3f5898b42e0ab41493563fb1. 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/SE3SA2100701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9596d2d029b2c4a87814e7e5c39ef83811d2110270b8e2d355ed929214aa964d. 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/SE5BU2110930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ca41d1779be79cbddd9682a435de8f32bc9605695f251ff498f09108854149. 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/GBMJG2014349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a39a712eea18c13b3f0e82a164a01ab307fd9a71988f52b001911b3730b0d0. 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/GBMJG1800835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fdb7a794f1cf009de8a000086e047c8abbf397f3ad48b4e5015fe00a28fa61. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBMJG1707259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0debdf15eca19fdf30b6f2b87f886e02d4982a415ad6cd9df7f67fd64a591c5a. 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/GBMJG1704327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0debdf15eca19fdf30b6f2b87f886e02d4982a415ad6cd9df7f67fd64a591c5a. 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/GBMJG1704327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33e8353b03e1f6f05c527c70885ec62ce0ea4bfb4abc8ea7bd0dce695cda33a. 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/SEWDV1601701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10300c78bc9b10273be8cf9c568c11c3958349e125868718e86b3f0240e58c90. 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/SEWDV1501801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3506ff4944782d61aeb97236ddfd069d45f9359964f42e6ec2cd65c184e0910a. 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/SE5II2300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810d9923eadff6afe69981e3f7b4feeaa924f8c65a2f2d7f2ac52dc0e2157407. 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/SE5II2300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8d2b695bf6245699d45ccc4d9263daa0f33c5570e0f10a88719c70fb14a62e. 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/SE5II2300203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0347a87f0c1ce0345c74e3e37f80648a8de2e2d6621c34483afaa440343586. 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/SE5II2201001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1862fd1831d334087172835ffbcaca4f8a49c5601110b02b165697962ee86d50. 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/SE5II2200701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf606df40c8e5b92cb533e0fbee63d44a57dfd215fac871c1e491f91caf10380. 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/SE5II2300208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd1e49145bbb208e06fb3c80466e38977aeff7be139c6f0ef116ba929d28f2a. 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/SE5II2200401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fce071709ead6f3ced6f36d5b4e04ec194bea04ae5829f571feff1a41f3ab6. 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/SE5II2201501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd10bce204f60ba35ca18b74556ca8bceb4cfad78bee331de925a028808d15a3. 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/SE5II2201201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148aaedff78fe1915b139e4b08c806c885ef8657e88c2a69334ac67eec566261. 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/SE3OH1342601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92dfd2b3f3891cb17e79f922ee9277cd2d0ed90728192e4acfdc6db49ccfc143. 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/SE3OH1342602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fce071709ead6f3ced6f36d5b4e04ec194bea04ae5829f571feff1a41f3ab6. 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/SE5II2201501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0879675312847fe8abd8ed5a043cc620004bcfa6313f003499d0020dd7aeefa7. 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/SEWEE2013105.