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 0xc79608f693a822b55ec7b73e547be342db0f1a08ccf05471280018fb82ae6fc1. Chain 2 (Bitcoin): anchored in block 953662 (2026-06-14T17:28:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/562c432d-a5c3-40b4-a856-6f7000028e46.json and https://artists.proofprofile.net/proofs/artist/562c432d-a5c3-40b4-a856-6f7000028e46.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 0xcadfba000453453d7036efe53232956cef53eca8dd62f0267eddf6af4c2c15ed. 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/QZWV32578400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8a0fea90ef1b63e7a39035fcc28eaa57f7c59121700685d280c9addc192218. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZWV32578407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c9416d262867d4603be2f110bc79c80ef6ce99ec29fe2a0264d732f4fb03b2. 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/QZWV32578350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21569442c8faa77abf2b683a0fdac3655cea2e8fc1ee4f35aac6f75e9b703267. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZWV32578367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c82a44ad9ac15445d44c4d077b57b426f2b472395a0125f5367e3ad21f25f1. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWV32578388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55410e0c336025f2fd3ec7aa11e6bd0683d2d432aeb3446d825032537b4bf27. 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/QZWV32578384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c88ca2b2d4221948320c70d730a9d9e3b8242ee9af40797ad94c9d63dcc819a. 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/QZDQH2527455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc5bee52b9593bde17bebae84257a5f712d367923b0ad6353ce7740f1389fe0. 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/QZDQH2527456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb477be7059cbab52426b3c840c7ddfddf765c0c584ed74c443e96b48fd1df22. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZDQH2527457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f0df8f3082a9f3fe410084fa7f6d25b4c591a6a296f0d74a68c41267ae4184. 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/QZDQH2527458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d35af4dee154e6fd74e59ba66092385e3573287707048fa051c98edfa60a5e7. 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/QZDQH2527442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdfe1aea53316aa07eb36c32c1efc8b56f4f15d634a2a7a8fc251424293dce6. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZDQH2527443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ced1f8a5a7ed61eb27e7cde475aa31bd30a9550afd66591f2efd8d5019274d2. 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/QZDQH2527444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52efb0dc91d2355c9e492868a9940b161aea1613825426b143e9b6be40408049. 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/QZDQH2527445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4813184f1228b26befcaed3437b833cc1d0a81a189ba18be15d1db9600bd168b. 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/QZDQH2527446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff29f8109cbab24f8ddab0dfee6e6aa9d68590d81b0a58db74df80ef0c00be33. 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/QZDQH2527447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac3af73032164d42df24b9f1ad82684e2f040c6d23174bfe290aa25f318b695. 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/QZDQH2527448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ea5c6760c89565f1a3f519296fd741ced188423cd5c1687d90de54f672b55d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZDQH2527449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e33945f1c9fb24e1dba80b7e77c5e0d8d9ca4b906316b77ec670564c1240b52. 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/QZDQH2527450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71cdfeead7e79f717532dc9dbe002ce0c197070654a1c70ccbc5f64497117d99. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/QZDQH2527451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeab025bccdbc579977a2b4fcf812cebce45b937f783c02dbdd8d29f1abef1c3. 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/QZDQH2527452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5085d2ffbfb9a7fc5d4d1d77a30d088f0fd83db323281f4f43fcf251072125cf. 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/QZDQH2527863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb18c983750db627f805284a11f7a47f6768b817d6184adf7d078deed01a598e. 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/QZDQH2527864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48342030e8aae017692cf199e8d5d0e06f63c58c10184b6773238986feb6443. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZDQH2527865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5a6fc346b835065375207dc9a753d51f022334045a7c9425b6adde69fc1d9e. 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/QZDQH2527866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f2d25ce61e78e826f0dd279a475b8dfd98485eaed83fe44b287c2dbda4139a. 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/QZDQH2527867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cec0b00fe03c8b6ec32274b8e9360a72d5f9844e2ca3daf698f43fbd65a8090. 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/QZDQH2527868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376a5a3b0c3b61b60ed10a105000a321b56816f8a3546349978a75a7218676ad. 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/QZDQH2527869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970b7e2dad9734d3e6dde4a493d6104d7b4a69a0bbd894b8f32d34b3b0390b7c. 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/QZDQH2527870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefae3b7320e6a034aeed9eee60a74692782c73c43ae7a2cbc0205a42bdf982ee. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZDQH2527871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3d4af1a15b45c686b0f121c5d4d5cf3df44ab69c0e1110b16c51d6e3354a4b. 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/QZDQH2527872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018cf6d8747ef023a35b7305764727d833efd2fd8f851b71325005f995d4a40a. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZDQH2527903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9526d7b2ec9a956f597f3400b04e5681c0362a530edefca41e35a683c0707426. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZDQH2527904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8625bc8fb5ac2f24224bdd362d44eafaa6b8c236f7ec38be5eb68fc121b73a. 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/QZDQH2527905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8b3e5d29caa6f235ec91a1292afac68270cc035b25fe0eb413edae65fcb4bc. 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/QZDQH2527906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534f81750dcbb4480aa827574efca68d57136241e2c1196712882647ba4eb19f. 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/QZDQH2527907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054d693e311866a7701a9f1ac91fd89999244ea9e015905ccb6c156251357e5f. 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/QZDQH2527908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4251e65aa4d9c132631075833bd815bf0c823ae9772a1d92cb5701d79fa3a961. 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/QZDQH2527873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfd9b59c6191638b0c3714ba80d10e81379cd2d39ccff51a11e702e684f1f1e. 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/QZDQH2527874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d65f1a319d8e0395f408b05d512a0b90a23b5affd459501d7269c917d8176f8. 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/QZDQH2527875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf1fdb338b48a3eef44bc599f8bb2ba4c3fb82179263997a2a20c75d01eb5cc. 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/QZDQH2527876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52889cf2da623f7eedc757c38cd5d356cbdc89b9d1afff65512f1467a2720e2c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZDQH2527877.