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 0xbd4bc9bd08a7721f039308e76e781e9d08795e29e3b4f78ea0098cd68f28bf6a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09ee82ba-b213-41d4-9dd5-037a799bf22b.json and https://artists.proofprofile.net/proofs/artist/09ee82ba-b213-41d4-9dd5-037a799bf22b.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 0x548287fe4207f3d963025b35408d3b551a55dfcee9f35756c854fdd0a549d0af. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR10S1973457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8ad8075022e86b63bf3ef75b406c8fcc249b99e8159788c9914b10330af617. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:57:15Z), 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/FR96X1913799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305c45341a34698696848e9f8870d10de2e2f39a2ad89863962b02cbeb8e84f4. 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/FRX202095127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3298a2302a7e3cd66743bc4d817d32f67f5da1934abad4858671991a56b8e4bd. 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/FR26V2078881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf7dc5628b35d0b14e922ee93cd9d08073957ed0f21645875da32d9dd6902e5. 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/FRX282136531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063e7dc94d1aa0da3a31fe3c5d59a6507663cf427a84796554675aa6d4f4888a. 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/FR10S2266473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ec8889740c35e3f66f6fc3bf4303107cd28eaaee05314f949276d239b86c72. 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/FRX282249328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2681bca6b0e943533a11dad151a27a5228411ff7b1b5626b47d92116779e3854. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/FRX282274531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a668f900d948551ff3c1422293ff7a71ef697e8b731595f4ed98d626b64c8f1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX282274532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ec8889740c35e3f66f6fc3bf4303107cd28eaaee05314f949276d239b86c72. 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/FRX282249328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fd9e21d8ac64ddf27c26dbf5cd6b1c16840825bd69d65e8f58bba98ab3fabc. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:59:32Z), 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/FRX282274533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31690f5a9ac13455bf42263b8ccd2d06caf2d5a94dc6696fca14190e99f846f4. 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/FRX282274534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0156c8a4fbbc3cec475fde16901155fcccaa42c0e09b4a199e5916f52fe4b8bc. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX282274535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fd8bbfa6fb5ce026c83c75e780d8a7e826a8fab16d0c3db930bc698027f82b. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/FRX282274536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6970822d2e1355359a37fb2f647a06fe4cf2c9e03a56e01a4b0c6936302984c. 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/FRX282274537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac7d6d9608f7b91fde3da830b04c4c19212861d8eba718a0d0f6201403e064a. 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/FRX282274538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90a135b25d1266cb01710412442ac8cc8b9d1508438d6da9f370a22e6b27bc9. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/FRX282274541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e0f25d0033c71773854131460aefa4f59ea7a25b2684b7e90bfae995354c8f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRX282274542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e0e5ec52181fec5b7e55316919656f8b787eb40a22ac4dde3c528c3ca42c07. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRX282274544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fd9e21d8ac64ddf27c26dbf5cd6b1c16840825bd69d65e8f58bba98ab3fabc. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/FRX282274533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fd8bbfa6fb5ce026c83c75e780d8a7e826a8fab16d0c3db930bc698027f82b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX282274536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6970822d2e1355359a37fb2f647a06fe4cf2c9e03a56e01a4b0c6936302984c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX282274537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac7d6d9608f7b91fde3da830b04c4c19212861d8eba718a0d0f6201403e064a. 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/FRX282274538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1160c4259879e0ec2dd01b74b41cc1125ad06f2c44264d00b6ed4c58558f8d. 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/FRX282274539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc61d6d091457bf83dc27eed439b58049b53f384cebc84e6ea10096371a0e4a. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FRX282274540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e0f25d0033c71773854131460aefa4f59ea7a25b2684b7e90bfae995354c8f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX282274542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578cf4948e5a038f476e8d6d5b40236f2b54fb9d539cd8e9403032104c789bbd. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX282274543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e0e5ec52181fec5b7e55316919656f8b787eb40a22ac4dde3c528c3ca42c07. 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/FRX282274544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de1346c31710a2482574df40971674299495e6cd1b1828ae0c819f0833a2244. 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/FRX452265970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de1346c31710a2482574df40971674299495e6cd1b1828ae0c819f0833a2244. 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/FRX452265970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cae9c72470bedf14c6b4f9b971b858ecad4447906e0d377e301597918c0f48. 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/FR96X2325637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d81c62a16bf2b4a91edf1a570276887fc0e5802a40a4e7c9cc5c28d512820ca. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:51:42Z), 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/FRX452381079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7e4f349f562e54c9a67eb6bb6b22b8ce736422b88c60c1d17e50ebab25c6d4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMDA62589921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcab333b8d844049b9d6e1a63de7288c1cc2b043df248785009089dfba2dfb9. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QMDA72598798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b19fd79bb8c4a24a3537f24c64dff1fbb9e0e8441670c6e9ef48b71695ea4e4. 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/QMFMF2511219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b85e1eb2cbce1aa7127293f55fbec1c07dcdb22ae9a1015612ad87c159eaaa2. 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/FR96X2282963.