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 0x720fd10ca0a03c9daf21374a1912753e60afc1e730b5a9bb497f41df1c88c5cf. 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/52e17138-ab34-450c-b4dd-8a7d97c4ae6f.json and https://artists.proofprofile.net/proofs/artist/52e17138-ab34-450c-b4dd-8a7d97c4ae6f.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 0xc60be71a42f3c5bf08722998a85eb37b481edd4459262bed8bff75b52b850efd. 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/QM6DC1668702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d440c9a0d3fab070ee1dc98d45897a1f5f43e68210d3df341bba67b1be7f899. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QM6DC1668705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f779e8e1ce6e2f5e86d29026abd2f14a33eb00ecb26d399062120c035caa6ca. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM6DC1668709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc8b996eeb0079fbee0daae15bb25173c2423213c265da51a03994d6167db07. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM6DC1668713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a67dc39bfec3c9ad685099558c8871b77db2e21d53a956fe840f9be4dd867b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QM6DC1668703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e3bac60bd99e9ca678532ec0aae07cef271e7ddeb0c5b211bcf07ec5070aa2. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QM6DC1668704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e771b18e6f712a86faf84baf413564b14d64a9f18c2e7df3a973d8757fb964f. 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/QM6DC1668707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36861d0b41eae4bf8b37335de977e2a470c0a1943807c02f0c9b8b724843fda5. 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/QM6DC1668708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3bb6fd6b3e015f265ba9d278160e6c8556558c8f24ae813fbb3f511f89b0a3. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QM6DC1668710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d9922006a5a50563ac9c909d47d3e00707ff67387e76c6c4492b6835373893. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QM6DC1668711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1849b7e4f04632ab5e5342139033403a0249e1486f3000c261e7ecef18b87c7. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QM6DC1668678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a75beceac12483127ed010fba73b298f8557da6f7dfdc8630245504e9dcf5a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QM6DC1668679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c15884b64863955ac9396bea00f953b744a3f02233308b6895b4eb2c582caa. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:27:28Z), 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/QM6DC1668680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1937a5fd62479a8d917bfffda919193f897b653da60824032f6941d05f3e4b. 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/QM6DC1668681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0977b72f93b88d372d3c30e9d37738f2a5ae1633544b6ac1545cddfea56e36b7. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:10:41Z), 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/QM6DC1668684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea47cdc5291f4f05c6c828fd26988517dd4d467c55c1c049b6a24b94aace4027. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QM6DC1668685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbe934bde2b9494b58e9c116cbc69043e122de74cafe0c6c810854374d0f75c. 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/QM6DC1668686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c2716749d20f1283f494562ba22607ea0d06b08b0efedb59883ee86efb5a10. 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/QM6DC1668687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b87f19b99f0629523f3005c425528e08187d9820338dcf855bd364c0d6b169. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:49:41Z), 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/QM6DC1668688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f06c40bf0f818f45a5d791390fd81640a00e8e99b01e2b5d8c0ae20cbcd811. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QM6DC1668689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a75beceac12483127ed010fba73b298f8557da6f7dfdc8630245504e9dcf5a. 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/QM6DC1668679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c15884b64863955ac9396bea00f953b744a3f02233308b6895b4eb2c582caa. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QM6DC1668680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1937a5fd62479a8d917bfffda919193f897b653da60824032f6941d05f3e4b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM6DC1668681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6b296d8046071d6f4123ff97ff99c2de8f2088af54076c67c230a0fd15ab03. 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/QM6DC1668682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea47cdc5291f4f05c6c828fd26988517dd4d467c55c1c049b6a24b94aace4027. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QM6DC1668685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbe934bde2b9494b58e9c116cbc69043e122de74cafe0c6c810854374d0f75c. 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/QM6DC1668686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c2716749d20f1283f494562ba22607ea0d06b08b0efedb59883ee86efb5a10. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QM6DC1668687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b87f19b99f0629523f3005c425528e08187d9820338dcf855bd364c0d6b169. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QM6DC1668688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f06c40bf0f818f45a5d791390fd81640a00e8e99b01e2b5d8c0ae20cbcd811. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QM6DC1668689.