O.R.k. are an international progressive, alternative, and art rock supergroup consisting of Australian bassist Colin Edwin (formerly of Porcupine Tree), American drummer Pat Mastelotto (King Crimson),
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 0xb10576ff47b131051c332e4b4dee18f31833ece874b1f837df8ef4aed3af9dba. 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/d0435f4d-3405-4148-b4f4-be7d601193af.json and https://artists.proofprofile.net/proofs/artist/d0435f4d-3405-4148-b4f4-be7d601193af.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 0xb196364a3e27d28005285c60fc57c05137471338dd445808db5ce0fa3650f3ff. 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/GBYNS1700652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c2893e61ae58338bd528c59928a69b2dd96adce3a0138502941d4b9dd1290b. Chain 2 (Bitcoin): anchored in block 957827 (2026-07-13T08:59:54Z), 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/GBCQV1800538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77661754230f2332e14a0a1e753d40c32be2d098f6fbf246878b6f30f3280590. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/GBCQV1800540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c25912b4495f4b0877d0afd927dec54045be63e734c6c5c79d7fdf0b62ec92. 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/GBCQV1800541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777188896e62c4b234303baf0229b9590060768182c2bb386f32dd59ab9e574a. 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/GBCQV2200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686466a8ffba8b75a5650080802cd47d2fad635a0b9ab52f930000fe1159d75d. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/GBCQV2200121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6330e8d340c3c3673981ce23781191a50e4f1e47529ce20d5198890b6454be. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:04:19Z), 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/GBCQV2200122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a28993e88b86ce74095400fa431dddbb98f526619432974eedce5c227cb35ae. 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/GBCQV2200126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43694b5ed6b9f6fd39718da97a8b45b4c8b4f914b9d25dceca3a9ff5dcb3a0a3. 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/GBCQV2401250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9db82fe20ccc6ab76d38538eb9ab5f6c2c62e6f6fecd49185d56299baec324. 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/GBCQV2401254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a68363e94ef95740f36c888cbc786e7411b5aed7d2344092c77b463c6150bc9. 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/GBCQV2401257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233358246dbeb756f9bc5bec0ce002f6e6c5df749cbbff2e82762b84ee50c37b. 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/GBCQV2401252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233358246dbeb756f9bc5bec0ce002f6e6c5df749cbbff2e82762b84ee50c37b. 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/GBCQV2401252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a68363e94ef95740f36c888cbc786e7411b5aed7d2344092c77b463c6150bc9. 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/GBCQV2401257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43694b5ed6b9f6fd39718da97a8b45b4c8b4f914b9d25dceca3a9ff5dcb3a0a3. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:46:34Z), 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/GBCQV2401250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9db82fe20ccc6ab76d38538eb9ab5f6c2c62e6f6fecd49185d56299baec324. 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/GBCQV2401254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a68363e94ef95740f36c888cbc786e7411b5aed7d2344092c77b463c6150bc9. 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/GBCQV2401257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b264a74585c656f44b81201716a8551b92fbcf2041a350fb9cb55f00787a34. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/GBCQV2401293.