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 0xaf535c54cc3975d9ef627c9b26284c65dae2b39b5b740c9cfccd240028f7aa16. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ddbcaf8-aa58-4516-ad41-e23218bbe806.json and https://artists.proofprofile.net/proofs/artist/4ddbcaf8-aa58-4516-ad41-e23218bbe806.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 0xc67db29b30e91e9631f40a251ea4c8d6de880739985ec2ebe9cf7169fe1c20d5. 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/CZA219900416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be057decdee0b7c6a85229f35a1defda09a510b5270b26f7cb8891730d4727b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:00:53Z), 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/CZA219900418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9ade3d97e3730631855f73251cd7594ffd447acfb3d7887594ba837b8cdcaa. 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/CZA219900419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b5f8433b32d314f219ff7beb5df386de3d8ba2fe268e43d10d0398b536aee1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:56:04Z), 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/CZA219900420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840418ee82b70e96a141a347d9aa9a33b345a844fe9e3fa99c192281b46b3e24. 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/CZA219900422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7d87cb8d84af8e29397a95b47855b9fb3db4ab43be61655fb3a71c0fdcf178. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/CZA219900423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b80b1bf79787c787b5d3ca6cbf8b3e340efb3d4f98d5f8c2c726e5a653025f. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:05:34Z), 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/CZA219900424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed40c0765e84fbe45cb87bd7e667804eb98e9540996374fc168a81e4c3c559eb. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/CZA219900427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4673098cedce5a12d5eea34d863e0a29987cf9977dea1b9d3337f7646ee333a. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/CZA219900428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82d9604c72aa8b8ae6352c5cd38d2887075a120b1e6e5087c2a8f954805fdf1. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/CZA219900429.
Vypustte Krakena! - Multiplatinová Edice
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439943f5e1cd1d7bdef076bdbfcd185e46fbfd90eb414eb9795d30d2ecfebf4f. 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/CZA219600405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031c1ae07f89b999d0c2c8e1d9f8d7d1592b27d21ee164dcf1f1150df5ef6fe0. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/CZA140000153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55431f74bcaa71273cc15146c95a9f822615e069c91c84157cfbdcfdf171bc1e. 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/CZA140100239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ecee9f30ab90466c4bd21d3a5aeb37698b566bc20c63e9e0f97a4af49f500c. 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/CZA140300337.
Jako supi (Frankie, promin) - Something Stupid
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7d87cb8d84af8e29397a95b47855b9fb3db4ab43be61655fb3a71c0fdcf178. 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/CZA219900423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61f34fb2cc47e4918237f0bfc74a43f4d1f1096264b113f8730daa47db80b4a. 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/CZA149900345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f231c845269fb2af728840103faa2b6bbf44b37995d89c7f15b4f21e771fdc. 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/CZA210500689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc029009ccb8110eb44ee1a64c0c9c34fe0707b68a8b13ac631b78ea6b2ade58. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/CZA140100246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa0d682b50d460a26617bd9d02ea4ce4a0f639b1e27044d6ed273a0c06031ca. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/CZA140100244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff3142eadab335be545d224457c16dfe000f3c36765c19f911f47d4ef05f3b4. 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/CZA140000147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23c98a8581aea371c3dd62cc5f87c5c67b36fa898e3f3e76fc63abcd85102d3. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/CZA140000156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e5f6c9ec1b3af71d3ef8d685e03c439efe8e8ed93b0a22048ad79780e08122. 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/CZA161701111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938d0b276d29d362c4956d8d34aad41542071be839cba28c202bd7953b1b345a. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:03:02Z), 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/CZA163342872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf859ae378b317e7995114952de10c9dea7a393726fbfdd52f9e29dc87163b73d. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/CZA161701120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c99f239802e9ef530d2f83c0d557a1dc999145fec58a8d1634e7432c8205ad9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CZA161701121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56abe6c794105fb35da30c03a58960b81aec99784cdbdafe2b2c4e5d09bea0b0. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:59:21Z), 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/CZA161701122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ecac6461cd30ab7fe0a40f7cc4a42286b958ac13f7728266c62e056f7bcb69. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/CZA163342874.