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 0x710641d15e0da4473fd138df56761d079e660fc39d854a884eea300b4c656bd4. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b16650de-9557-4ca3-ad80-a02209f1d8b0.json and https://artists.proofprofile.net/proofs/artist/b16650de-9557-4ca3-ad80-a02209f1d8b0.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 0x46c0940be7fbd9bf24968217b101d6495ae416178419d61030c4de6f3b42d114. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AUGBT2403952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb4c9c80d042ab02bbb9d6f2f1b5104b7b5fca70d89331102526004333bc280. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/AUGBT2403953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f740997efca4a0fa8873cfca976f3be6ddfb66e9e143713b4e5696795b5b795. 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/AUGBT2403954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df286da02ad2afa62eb7c11cffd0e3ef0f11035e24d69c41296f1d7538b57c6. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:29:58Z), 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/AUGBT2403955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081becdc466e0c9e08fc3449deac5d068db155d3584aaa768b743fe38d6592be. 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/AUGBT2403956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb565e00701dd8c4a37604012a00e8ab2f2a6d4eff26da9c1921ff0a7f6c610d6. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/AUGBT2403958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04e0e49613ecff2e1fcf3d55ee0512e9e723ce3c224b54edc89da5b6600ac52. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/AUGBT2403960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7427252af48c07e993d82b4e9a2b523970be3767ac883a286cbea0efb3e29073. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/AUGBT2432798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae0ab2921bc6d11a9ff0a6613ad04200ad91e352934d9d9ba5f9181c59c5cb8. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/AUGBT2446315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ef62b7f024db9684db657440e094e18d5a25749111e23d79bc7bcf9d5c793e. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/AUGBT2446317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e79046c6f81d836be68c53efd9eb5c198a38d2f35cf1b58b5c7bf7a1391af36. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/AUGBT2446318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11deb1d210f6d5216d2cd37f9fa669281135571cdc5e53dd2d62af5b686dcb1a. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/AUGBT2446320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35edd6a6ced7ef7eea11465ef9a5687c756dc1353194d7797df5dedd9e2e437e. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:38:35Z), 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/AUGBT2446322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0bb0bf665dccdabac91641ffead78589967242a1c275198402b36233407e40. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/AUGBT2446324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ad5babbd76b0f561e8c297131f3f9b8f91b45f1d01dbbf39b9c4151cc5edc2. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/AUGBT2476252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632b88ef9e43a995847b364f7ee56892027d256af92dd75722c08bd1dd9b0a53. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:28:29Z), 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/AUGBT2476255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9772b1a5f36ca247b2d42b63513d3d88cef6a7182daa289a39007b48f4736a4b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/AUGBT2476257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee393c7a85e467f9b6e3bf24322d2d4cb7cb09d331072f643f5639a15264c75. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/AUQ9D2400513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb0cdb5159b30ff67140ad70c3a3e1128eddbbb529c2d5867d01ff3e2397c82. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:22:49Z), 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/AUQ9D2400514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386c664d1ce45040c26f6fee2cb16cdc33c789bd030895108a7f18dc9afccd90. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/AUQ9D2401138.