The Heavy may refer to: The Heavy (album), the second album by American post-grungeband U.P.O. The Heavy (band), an indie rock band from Bath, England The Heavy (film), a 2010 thriller film The H
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 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 0x14a4cb8705037c0b622611601f212bc35c438189945abc21cc016b642973c282. 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/af3e8679-5ff3-40f3-9e90-753789b65fc8.json and https://artists.proofprofile.net/proofs/artist/af3e8679-5ff3-40f3-9e90-753789b65fc8.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 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 0xc4f62cddd68c7dd5e1d8da12e5792fe77f00d4a2a3fde6f90c071a0fed9d5cb7. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/GBCFB1003301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b96c1737b1155d0bf9fd33e7bb611cf48cd19ad7de5ba169c1cd4ed9fd7a4e. 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/GBCFB1003304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f62cddd68c7dd5e1d8da12e5792fe77f00d4a2a3fde6f90c071a0fed9d5cb7. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/GBCFB1003301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b96c1737b1155d0bf9fd33e7bb611cf48cd19ad7de5ba169c1cd4ed9fd7a4e. 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/GBCFB1003304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f62cddd68c7dd5e1d8da12e5792fe77f00d4a2a3fde6f90c071a0fed9d5cb7. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GBCFB1003301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c624bad5c20a3221486a8753fe5c03e75409af80d2c1747e36e70579ecf906c. 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/GBCFB0700603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8d506a0915045c45085b06824cbe4be8cf502de22481224e1bf667105c7c68. 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/GBCFB0700605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a62e11003c412651ae392d4491512cf0522db6eab18f44501b300d2d17bd4d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBCFB0700609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c624bad5c20a3221486a8753fe5c03e75409af80d2c1747e36e70579ecf906c. 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/GBCFB0700603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da5d32e3cd1e31d8a378adcd95eb16cca0f79890481f0983c6e47fef200debe. 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/GBCFB0700606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a62e11003c412651ae392d4491512cf0522db6eab18f44501b300d2d17bd4d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBCFB0700609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43b7e35c439c417be0ccd1da576c081e666c2e768c0d70d85f463bbefbb8620. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/GBCFB0901502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d407157d6833292ad9ea7703d8d9294b6b56c907d73d0c057e64a939ceed682. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GBCFB0901504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c925cb6e34d06593371c94cbca707924a6a2b9ef77be587214f4926392f69bf. 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/GBCFB0901519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95604a349758b054d4d721042193f2d29f7c7219864d48e7e435e4410500b94c. 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/GBCFB1003300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b96c1737b1155d0bf9fd33e7bb611cf48cd19ad7de5ba169c1cd4ed9fd7a4e. 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/GBCFB1003304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994457c027f82ac6bd80295a794f39662fa38be1f9cdfd7625ca964c0c46bb34. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/GBCFB1003305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f62cddd68c7dd5e1d8da12e5792fe77f00d4a2a3fde6f90c071a0fed9d5cb7. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/GBCFB1003301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa2b5d14211a29fecf2bda0efd89e40a72bdcd5d233aa60384b72d0c3f8df20. 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/GBCFB1200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eab549b8d76dc91d8d2038107519672d02a1f3b69d76cc0582713be25b1a0ba. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/GBCFB1200130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bee04a41af25f0f799b4d8f5c5bbb37254aad7e21c21e38979186fe662d321. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/GBCFB1200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9f9d3a50d5963c7c58204120a25543665f51459b0028631def4e848cfa3a73. 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/GBCFB1200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f853945f0bd12ab2bef0be9ca7a1a9847bdf92dfcba93b5da63cd90a70094c8. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GBCFB1600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c9d2efe97f8ad5fb49237266884b11a5817ed4fb2b0c2ecdabf5e1492f1f8a. 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/GBCFB1600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38ed7c8f08b6d35f264f67ff20bbaf38f9ffa2b6b4f37c32fd1a9bc896567f8. 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/GBCFB1200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79771057376e3fd469729552c369bdc74c0b55f99405e257aef856e239e88aaf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GB5KW1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9069381780f7e4b185ec5d4b1dc006b6dbda1b9519220e25d07e949c17499a. 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/GB5KW1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ef32da8ae795f8b89f7feeda70d6c5648de5f215610e7dafa33241706f88ac. 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/GB5KW1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f8144e043f2e7d26d4bddeef9927c82c5ed92f6cc5c7eb63da92421d8fecdd. 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/GB5KW1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d2917be9452b18999c17dbd89473d0f0a6ce89ff73582bccc5f44c527d4222. 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/GB5KW1900010.
Put It on the Line (Theme from Borderlands)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701f2286bbc325290b19a614fdcb9965c4c3729643407c516948cfc6c3503912. 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/GB5KW1900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb156f575dda25cb083045b874331aa69a2d013d964b754385f97d4f2fc0e5e. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZWDE2245889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58d46a513a09c793ebccfd05554942ff8c1a333fa5eecbce19865dab9c28678. 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/QZWDE2245895.