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 0xb8c481b9110725a5415aa901edcc909a1a269c2d5d4565ca18d6f0e426247c5f. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5027ddd-8e95-4201-8926-eb6b5bfbb742.json and https://artists.proofprofile.net/proofs/artist/b5027ddd-8e95-4201-8926-eb6b5bfbb742.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 0x706fbdc7dcb80b1c4857293382bd2d427428e14225e82bce2890a1e57d4d64a2. 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/GBMJG2401452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917abcc6eb166e01137aea20f0b0ee676a6f3d135de7bb7ee006510683bdc87d. 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/GBMJG2401453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94540739de8a0d76b8584375189349a01aa73c9aafb3b6c3a5c44dcee330a3c3. 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/GBMJG2401454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df9b0f01c676172956ae0d619f6eff920a8f79d2977b45df8ba27cd1c436227. 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/GBMJG2401455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70241a1a59ca1a6377cbb5badc1b09df17a438a304062747d09b91f9c52694bc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBMJG2401456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfade0c355c539d33c834c1f22f491de6daf29ed57e432b900275e6d472b97198. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBMJG2401457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ab53e42b2dc494bbadb887061d9bd5e2f271b6cf20fee8789de1ff7d095ed9. 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/GBMJG2401458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef34c65ce61cb72bc3ca391c37f27a245223bbec5e8b928fe274b6da34b2372b. 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/GBMJG2304628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afe1d95442ffd01974da5689879d37551f32a6883ecf9dd89c985a42965efd7. 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/GBMJG2304629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5614a8e16aec1d4a11aa0ff2364415d98a957d546a242cb70f52c1b2191e65. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:07:52Z), 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/GBMJG2304627.
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 0xef6274d5781ce04f860645e879580d63a9e7c790cb79fed22077a3c21cca7c7f. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/GBMJG2304630.
One Scene Unity: A Hardcore Compilation, Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9bc5c4bad1d2e0981efaceaa2163fbde8897be65dc0947630d5cf1677e61220. 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/GBMJG2421424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb39532e155c17048194ea10a1abc7bc373a6fb6cc44c4836aa05808892b0c1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBMJG2421425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4810b0444326243e770addf52cf3923708c1d1a3856f0c58391e0a599fcae8ea. 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/GBMJG2421426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c0bd49e69b0ae5a6de543b5f5abfe1ca436429ae82d4fc556533245f351f62. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBMJG2421428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349a09978edcd8c3c209c56d2c7e2c1df8447177eba98d552eb32442ed8ae42a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBMJG2421429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9381bf3a8c42455cb0d2000a0e82223034885c5861e988b8bb73e6f353168424. 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/GBMJG2421430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc57d9ca6ff22dd93b7d171f1560e626591d863b2622d508177c92113e5a6124. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBMJG2421431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7f45c0ece02d7d074f2786ef6359364c6bab8cdba75c52c62be7cefe215fae. 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/GBMJG2421432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee256d513571798de018dd196c6b7bbd1a8562d746335658a9224bfadb84e507. 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/GBMJG2421433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cd9f05c025316bfd6915d8cc3110924f4d0dc23fc1cad19a64e1b8879af891. 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/GBMJG2421435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ea0e22cf4ee1042dee57090db19c568b9bad6e399de29028d1d244dfdd8baf. 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/GBMJG2421436.