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 0xa0829c78f6817d6578518ad03064ea78a6343c28f03f3d2bcf5bbd709770dada. 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/c87cd7d8-c1f2-4e50-b41c-27cbcbb4dae1.json and https://artists.proofprofile.net/proofs/artist/c87cd7d8-c1f2-4e50-b41c-27cbcbb4dae1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Good Day to Die: Hoka Hey (Original Soundtrack)
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 0xa4921f92d6f3483a86c63d0c5ef5f0f81ccbde4a8a792ef3b13578c7ef0162e6. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/IL6652306399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836b28c0c44ddd16e26d653f012d038b8ea5b187b5aa69fc2553d83a5efcff9f. 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/IL6652306400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbee796828714b7a6715e1dab4b1927a9621938f9b7fea9664b323ed45229f7c. 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/IL5842343517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25dc81fc11a9bdcaf73b9fc2eb0622a2c500cc9b3226bae66842a5f4caaadbe6. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T11:20:36Z), 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/IL5842446319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861a908fb0491700b8526483c9542082584825ff55c51e55b007fef722cd57e0. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/IL5842448241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36672c09f74ae6ea0bb65292f6f321471bbb9e48d579db1a6f141833cbf4379. 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/IL1042506441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc5e4c7e3c0cba1f53465ec2428ef052bbe8c3e8895ff4818765494cb058542. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/IL1011120666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99560946bd6015021f946b715d9482c2b5e968992b372c3f3c5c269781936b99. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IL1011120667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905d37b170449cf2a0780bafb6f957cdfa089356723fbb3fbee01e51cc69f5ca. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/IL1011120668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3de02f733fa97e90b9349c68e34edad7905f776df941d440d8b259b0e6e63e5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IL1011120669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324febac63146629b62f87ab210096c33d760edfab393229d5fd51b4a5f6470f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IL1011120671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d920ab2f00e976ec74b5db4cc012f813d14f929d003fd70c411e954ae5d9eb6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/IL1011120672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950a9867bca8c29a8ee2b2b3c4113867b2b4539eb53413adc3738bc57bb8a971. 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/IL5842551125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe56b9bd189453eac73d446244d72499019d5b8477db2c56a2fa0720ffdeb65. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/IL5842551126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1e0f44975200bb1ecf95e31f5b0ada4bdc860e45b1de1413696a78b2528a86. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/IL5842551127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa4676a45c0dd769a3df2473ee7f793f087ceeb3c42b3c07b9fabe8d64cd445. 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/IL5842551128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113d5b9be9f610dc859403c21ce349740c6275d0cc1cb3141e27f0aaf4751dec. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/IL5842551129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1250c45d7b4efaf073738a85238288fb06997a45d08ee7fd22816e5d1f17e1cf. 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/IL5842551130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8975cd57dc04a83ccf14295d2d2e045206871370288b2c456623b2914d7dd2ab. 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/IL5842551131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ffa2a2e77b5f8cd37c398ca8ecf6af13fd5f58ab149a8fdcd6455ce220da0a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/IL1011120674.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2d013d4142b155d50f594b02a2ff6c11a6e4d5ba91fc517215274d09cc991c. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/IL6432200736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa42a56447656f1a0ac9120824426485d4eb5b50a8bfa395fdce31d176751af. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/IL1011120670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb680ba5aa434bccd57a339e0177880d53041af6d3117ea42655a5063b0458704. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/IL1011120673.