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 0xf24757c3ba401295edfd492b693bdc37ecb3d1e6b0ec7d33256e3e6963031d81. 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/38f69c57-0b4f-4ace-8b82-9bddd4fd36dc.json and https://artists.proofprofile.net/proofs/artist/38f69c57-0b4f-4ace-8b82-9bddd4fd36dc.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 0xcdc780a7e3d41dc84f1a690180d90bb52c118ba795e17b29fc99b266d85247ea. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:38:27Z), 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/TCAFK2141515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e6b02717c23656189f266259aa27a04be9cbbf45dd3859835d7b77fdad3aab. 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/TCAGJ2244123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf49c2137eacd9a14bc5695eea6b1da57d2d785a36f22be2394d36fc64bd250. 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/TCAGL2224566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e1379c1481edfc51e3ce6dba27395ed7595e8d724fd4aa622e907f24d6c292. 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/TCAGY2350020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3135bc9f968b09a45daf5452816a6232cb3e3460316df2ae9265d71e4f24da1. 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/QZNJZ2345614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d19865cf05dc7fb16ff3723a919551d0922ded8f6b614e27157dcf86fecdc13. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNJV2393829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8a66761ebab03b2601aa6b1c7ca10244ddbaa7bf3da44a66ff29deb824d4f6. 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/QZTVM2337420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5365489066d89832128605bd531241fe023dc24885789743e2b6146f314a158. 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/QZTVM2337422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1529498fdc8808a81607a177291e9e27ddb4161116a886ad9e0c981cf9fff6. 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/QZTVM2337423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1529498fdc8808a81607a177291e9e27ddb4161116a886ad9e0c981cf9fff6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTVM2337423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a315b97a92376ed631eb3593bbd435fecae0e78ab62f473e28aeb8aa97e5a12. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZW9M2303491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e4f2eba5b4f454d6246dabcdeadb4aba3c86114deb34f3a8e4f1b7ce8b62fd. 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/QZGLM2450894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c87872976a295be088a75aaa70d0a59ea30b39c168c22cc4138bec732b6e26. 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/QZNJX2463380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad7fd40242ace8732ec481481ca8816ac17025b84c825c74d4455bec78bb1d2. 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/QZW9K2405992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813dd1f34bfdaf0a3a5f02c3d1e4783a5cc2f5538eb44b04d26ff28f4b8d5f49. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZW9K2475159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53145d3c400dfdb37e1b5af32ca13633cee92a90b221b9ac91a8d16e333a1b65. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZW9K2475160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb72c5a18be7afdc0e5475a7f46d031afe4538bb21c9e9edd882cee88f615976. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:44:11Z), 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/QZTPX2407528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9118a9d7ff493eb8bf16e2d8a56332cd0b241b02a56f2c888f31061ed513da21. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZW9K2475163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8dba969aab37ba33a4b701ecd355a4e2045f1348d664738777e7f3895dd6cf. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZW9K2475164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27752689152cf2aa1242672272ff1546549fa1f44a59fc1e40a18e31a228894. 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/QZW9K2475155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad7fd40242ace8732ec481481ca8816ac17025b84c825c74d4455bec78bb1d2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZW9K2405992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f5635d02e3d4e9467059807396a83f46441c101e3c90cd7224032aed58f4d7. 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/QZW9K2475157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53145d3c400dfdb37e1b5af32ca13633cee92a90b221b9ac91a8d16e333a1b65. 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/QZW9K2475160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2234b2c7b2f8286dfe2a8df51d7a99e188eac64ca13b675fe8c6ddbc79b4147. 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/QZW9K2475161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559e7f07a5cbee9feded9e8198810c834457a1cc2ff3490a5c57475794994e34. 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/QZW9K2475162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8dba969aab37ba33a4b701ecd355a4e2045f1348d664738777e7f3895dd6cf. 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/QZW9K2475164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9118a9d7ff493eb8bf16e2d8a56332cd0b241b02a56f2c888f31061ed513da21. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZW9K2475163.