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 0x43b8e4aa731ec09682e8e96611764d1d4b486c4facea2b08b66f89c4af8b215a. 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/20ecfdc6-21c9-453f-ad8f-a155f83175ce.json and https://artists.proofprofile.net/proofs/artist/20ecfdc6-21c9-453f-ad8f-a155f83175ce.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 0x3808390c25de08d6b7a6156955ef39356ca724820c261236d42f2ec8684a5295. 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/BRE6Z0600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c91db4442843d7c8730bdd42f13f11e3bcf7d391d92c28cbd4c5d512bc3df4f. 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/BRE6Z0600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a159e7bd930b77185e3047d61efc6dab20ac541f5091fa6abad05218d59cc37. 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/BRE6Z0600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0b046f3f3ac9bdbb92182dc69d47939312d3a43d9ff2311e02e5f05a28ae06. 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/BRE6Z0600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d17561a948bd2005fbcaf4155a6d7fd607e80a97de6a4449c71157f1f17d909. 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/BRE6Z0600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aef7ff9cbd6d9a4becbcdd8dc393a1144181de03e2f621e12b363abe846baae. 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/BRE6Z0600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4309f8a36be16c701776534f167cae757fbd8020e9eb6e7d3b1c88240cad85. 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/BRE6Z0600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a39f8ed114f625b2fbcdc00a1872138daddbb9148fe737f4a14b60189b6fd0. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/BRE6Z0600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50c88dd667ef2460b1be01765bca77ea192fa221975bc09813c099f2c87e4d7. 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/BRE6Z0600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecc84686ad74e2b1d06a92f7b7d1308d19696d803eafd92229af90c986ceccd. 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/BRE6Z0600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ceffdd4d8a5a1bc07a4b5aec6d10af413ed37539cebf2b271027bf99cd2dda. 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/BRE6Z0600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b239aebf8d7318d6b7bbf194968b6c4df46c7a5b56776c2285a8dc1b75d262. 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/BRE6Z0600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3310dc5421ae2650fd2f4516c97ef309e5ccb680f0bb072f72f80a63c1347810. 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/BRE6Z0600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc443834d00bad586f2c086d2561e4da50411cd4aaf76dc0cbab1f2ee3756e7. 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/BRE6Z0600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbec3bd8abeee9c400765ea59de34d05b6a2e747357e0208ab3bdbb275898f0. 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/BRE6Z0600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7047403b4359dd36c196c47553934295503e4852cad21f5cf043d02afd0807a4. 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/BRE6Z0600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f602acfa450fc310fa14c2d30272eca8e0c0bcd4ffc9897335d63b0f7a963d. 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/BRE6Z0600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501115aa4c57a33acf2e7a9bc5cbcb1db72abfb132c357e7496b5baaeaa436e4. 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/BRE6Z0600026.
Ciranda dos Diferentes Povos (continuação 4)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a44f84734c771767124aeac2a09877e9e3c7187cbf350c1a2ae8392df8cc9e. 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/BRE6Z0600027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57f1dba933c91efd229503ddd9b9a12286f00a5b360a023b096088d87c5d6ea. 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/BRE6Z0600028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef60c2b4937412d35f813b8617702eadd2a4e8e812d549928f38a185614a92bc. 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/BRE6Z0600029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc09f2328442066bcec50c6a8de8c3c060181a821f422f3bb23b2e9ebcd44696. 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/BRE6Z0600032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cf197cc18785f73292f23a0336a898aa1ed3e295f68b384552358be52e06c5. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/BRE6Z0600033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29f560b1078a75c9ecd1e70af1e0f0bb13773038ee35c7427bd17f3d9d5f8ae. 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/BRE6Z0600035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c521c97f6b6da1976a001a05110b29a90f6394f6e7a63b4ec87936a61857a9. 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/BRE6Z0600036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1f9ef76435da0c389b1d2fbafbbdc71e2403308e2d424570f073ee54eca90e. 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/BRE6Z0600054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f494d84f914763359fe42690a7329f8548c3c86dce4654916c0fbbb7ca7840. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/BRE6Z0600038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ecdff7865c7d21801d81e6237c8982bbc3734dcf531c551bc4a51c37d6289e. 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/BRE6Z0600040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1370e8caa2f82c85ed49d11ed3fc95a3043bb1c20bb8bf22ad42e90bbe3f33. 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/BRE6Z0600041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ef86a16130dc2e7ab0baa88480fd46cccd0f449ca7b9653fcf1f615cbc810a. 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/BRE6Z0600042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6343017f9100258405c66b3155a3cc5e0cca87172ff82387239e25121871e15. 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/BRE6Z0600043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a711132c4879f662e38d6ed9b7e7f202ad0f1d65edab4a410fefd2e3a29893. 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/BRE6Z0600044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6838baeaf9d61113b94a0715d6ef41576ebe209459a7fabd04adeffbe8269fe6. 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/BRE6Z0600047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50b81240a23e0930daa4e1ac8834d727e18d1cd3a08a63c0131ada85d88d177. 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/BRE6Z0600048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec14050c83129fb3a142b898254cb36f66aa3ce585ce28d76f5bf5f932f6198b. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/BRE6Z0600049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585b5ea567f5981142fe3ac979b797614e095405c46d5d3a7e257b1770727590. 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/BRE6Z0600050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a64a03f1d9e9b0408a4afeb831329306d0da7785dc58c3d846aed8480a81e2. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:56:23Z), 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/BRE6Z0600051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0315ccfde58d45ac6aec027d2a6cacbfeb94f47829b8b02def7756ef5460d60. 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/BRE6Z0600053.