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 0x37182af56734a7b63ba51f3bc428524fcede76ca46b9c1310970f1843d8cf8b7. 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/4b851405-b5b8-440e-9ce7-936887eed820.json and https://artists.proofprofile.net/proofs/artist/4b851405-b5b8-440e-9ce7-936887eed820.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 0x27d5b9a9208e97bc27ad9237ff9e49617541e8033cd11f863a9aaacc1b0cf95c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:07:14Z), 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/BXDK51900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2f10389085bf9af51b73a5e320a5e4c2c6b6265927890621693209c52fd931. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BXDK51900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa653770e4134831f825033dc967555a008f6816bea6d9bd1cf0d17a7d4167c5b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:16Z), 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/BXDK51900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76511cd04567d3c4a456b56877d54b7885b0a1c1f4e23d6a47b11631a8da03a8. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/BXDK52000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0336de3f0283d0ae8a4d0c702a4b7c1f48090741d4c958a86716593d1be5c64a. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/BXDK52000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df33a9e5ebccf724b4cf1ee516c1e4a777bc2665dd6e197f31e76e990fa0914. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/BXDK52000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda23b925564a943c11c31294629208a233c4fbceccc915e30816976adc6badd. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:14:29Z), 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/QZHZ52089740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b7c409c56b030d1a65dc5ba1bbac1d0cee84eb5664bddcd4adc7cd0f272e0e. 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/BX08N2000136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bcff531bc88ae29536c684694caf71d344ab4c94a45eca4891c42991113501. 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/BX08N2000133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b7c409c56b030d1a65dc5ba1bbac1d0cee84eb5664bddcd4adc7cd0f272e0e. 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/BX08N2000136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4072f8be5ee603c4ed9146de74aff77773e92b7eb636c653d3e57c6867066215. 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/BX08N2000137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbe02afd1792f7a17ee505d3813b09e9c1c585ca727cf055b02fb1687631f8b. 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/BX08N2000138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb4197a78f0bbebeb4577f53bbfb0f61b4dcb0cc0ed2a5553aba8c5c39c5683. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BX08N2000139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a74cefd8f4f3ce90fcd1ed12fb93948b13f5866bfb92432a25ec662bd2fda0. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T07:58:23Z), 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/BXDK52300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6cbd86b14e0e8d890752bbde7682a787ca6d2c1f91196c9c7962d5e84bb78c. 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/BXDK52300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7783f2e35c740d787006a34d1a6a1ba82dad449402177330d4f0238bf52f256d. 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/BXDK52300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf24fa0cae278d945d83fc8f2be76c4c39fa1ceff712088215e6964e65894bc4. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/BXDK52300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b38b92d8df24eb2e0e35f10599bf1ba5bce20e6d3b73b973dedcf18b5ac1ba7. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T23:02:16Z), 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/BXDK52300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66172f9c97885e2d62706235c4ff58425a0ff1e93edd1a1ab0cc7ce6feffc139. 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/BXDK52300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573252523cb4312a4f7861110a501fed2cd234470e7d32ba8021c0805bfc214f. 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/BXDK52300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6cbd86b14e0e8d890752bbde7682a787ca6d2c1f91196c9c7962d5e84bb78c. 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/BXDK52300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b309c931caa6aec2a492972048db0f052914b2147183d51f0ad430cd258d2ec. 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/BXDK52300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdce0975b595fce581e463e98d8a63153ce017896b248ee7e774be61ffbc27a. 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/QZMZ92096939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f6ab661962e644a741cf002edfb9ae7146c64f33004c55fe19be73903747b5. 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/QZHZ32143230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc879863344cbfc6afa6c0e0de958660ba2e0ba3c9331b0563a61d36533790f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXYVJ1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be579acbf25aa2758091007091ea3db11b278b3014b24b574ed2456f7128c4b. 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/BCCNA2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53983b30b2e64c423fb69092b949ef7d27cb6840544aad0c4b94967d95196bfe. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BKCOW2400010.